Method for filling refrigerant mixture containing HFO-1132(e), HFO-1234yf, and HFC-32

Abstract

The purpose of the present invention is to provide a method for filling a refrigerant mixture that makes it possible to keep composition change caused when a non-azeotropic refrigerant mixture containing HFO-1132(E), HFO-1234yf, and HFC-32 is transferred and filled within an allowable range of refrigerant performance. The method is for filling a refrigerant mixture containing HFO-1132(E), HFO-1234yf, and HFC-32.

Description

Method for filling a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32.

[0001] This disclosure relates to a method for filling a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32.

[0002] Patent Document 1 discloses a heat transfer composition comprising (a) a first component comprising HFC-32, (b) a second component selected from polyfluorinated C2-C5 olefins, and (c) optionally, at least one third component selected from fluorinated C2-C3 alkanes, CF3I, and combinations thereof. Patent Document 2 discloses a composition comprising HFO-1234yf, HFC-134a, and HFC-32.

[0003] Patent Document 2 discloses a composition comprising 5 to 65% by weight, preferably 5 to 15% by weight, of 2,3,3,3-tetrafluoropropene, 5 to 70% by weight, preferably 40 to 60% by weight, of HFC-134a, and 25 to 42% by weight of HFC-32.

[0004] The applicant has developed a refrigerant composition containing HFC-32, HFC-125, and HFO-1234yf (Patent Document 3). The applicant has developed a method for filling a non-azeotropic mixed refrigerant containing HFC-32, HFC-125, and HFC-134a (Patent Documents 4 and 5). The applicant has developed a method for filling a mixed refrigerant containing HFC-32 and HFO-1234ze(E) (Patent Document 6). The applicant has developed a method for filling a mixed refrigerant containing HFC-32 and HFO-1234yf (Patent Document 7).

[0005] JP2010-047754 Publication Special Publication 2011-522947 Publication Special Publication 2011-525204 Publication JP10-197108 Publication Restatement WO96 / 33377 JP2015-168696 Publication Restatement WO2014 / 038604

[0006] The present disclosure aims to provide a method for filling a mixed refrigerant that can keep the compositional changes during transfer of a non-azeotropic mixed refrigerant containing trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32) within an acceptable range for refrigerant performance.

[0007] The inventors of this invention have diligently studied methods for filling liquefied gases in order to solve the problem of compositional changes that occur when transferring a non-azeotropic mixture containing two liquefied gases with different boiling points, stored in such a sealed container, from the liquid side to another container.

[0008] In other words, this disclosure provides a method for filling a non-azeotropic mixed refrigerant containing the following trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32).

[0009] The method for filling a mixed refrigerant according to this disclosure is characterized in that, when transferring a mixed refrigerant (liquid phase) containing the non-azeotropic refrigerants HFO-1132(E), HFO-1234yf, and HFC-32 from a supply container to a destination container and / or equipment, the liquid phase mixing ratio of each refrigerant in the supply container before transfer is set to a specific range.

[0010] This section describes the mixing ratio of the refrigerant mixture in the source container before transferring it from the source container to the destination container and / or equipment, when the container is filled to its maximum capacity (100% by weight).

[0011] A filling volume of 100% by weight refers to the maximum amount that can be filled into a container, as defined by international transport laws and Japan's High Pressure Gas Safety Act.

[0012] In Japan's High Pressure Gas Safety Act, the calculation is as follows: • G = V / C • G: Mass of fluorocarbon (kg) • V: Internal volume of the container (L) • C: Constant depending on the type of fluorocarbon (gas)

[0013] In Japan, the gas filling constant C is defined as the value obtained by dividing 1.05 by the specific gravity of the gas at 48°C.

[0014] The gas filling constant C is determined by international law when exporting, and when passing through tropical regions, it is set as 1.05 divided by the specific gravity of the gas at 65°C.

[0015] The gas filling constant C is determined by international law when exporting, and in non-tropical regions only, it is set as 1.05 divided by the specific gravity of the gas at 45°C.

[0016] When transferring a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 from a supplier's container to a destination container and / or equipment, a smaller initial filling volume in the supplier's container results in a smaller change in the composition of the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant within the supplier's container from the start to the completion of the transfer.

[0017] The maximum amount that can be filled with a given gas filling constant C is in the following order: Filling amount calculated using 1.05 divided by the specific gravity of the gas at 45°C > Filling amount calculated using 1.05 divided by the specific gravity of the gas at 48°C > Filling amount calculated using 1.05 divided by the specific gravity of the gas at 65°C

[0018] This disclosure relates to a method for filling a mixed refrigerant, in which the value obtained by dividing 1.05 by the specific gravity of the gas (a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C is adopted as the filling constant, and the calculated value is set to a filling amount of 100 wt%.

[0019] This disclosure relates to a method for filling a mixed refrigerant, in which the value obtained by dividing 1.05 by the specific gravity of the gas (a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C is adopted as the filling constant, and the calculated value is set to a filling amount of 100 wt%.

[0020] This disclosure provides the following aspects:

[0021] Filling method for each set tolerance (when the amount of HFC-32 to be filled is fixed) [1] Filling method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant including HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C is adopted as the filling constant and the calculated value is set as the filling amount of 100 wt% <Filling method for mixed refrigerant at 65°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> Item 1. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container to a destination container and / or equipment, wherein, in the liquid phase, the amount of HFC-32 is 21.4% by weight and the amount of HFO-1132(E) is 26% to 30% by weight, relative to a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of 30% by weight to 4.0% by weight (target lower limit composition) of the target upper limit composition of the HFO-1132(E) from the start of the transfer to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 27.7% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

[0022] <Method for filling mixed refrigerant at 65°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> Section 2. A method for filling mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container to a destination container and / or equipment, with respect to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in which case HFC-32 is present in the liquid phase at an amount of 21.4% by weight and HFO-1132(E) is present at an amount of 26.5% to 29.5% by weight, A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the source container from the start of transfer filling to the range of the target upper limit composition of HFO-1132(E) of 29.5% by weight to the target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition), the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the source container before the start of transfer filling is set to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0023] <Method for filling mixed refrigerant at 65°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> Section 3. A method for filling mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container to a destination container and / or equipment, with respect to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in which case HFC-32 is present in the liquid phase at an amount of 21.4% by weight and HFO-1132(E) is present at an amount of 27% to 29% by weight, A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of the target upper limit composition of HFO-1132(E) from 29% by weight to 29% by weight - 2.0% by weight (target lower limit composition) of the mixed refrigerant, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 28.7% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

[0024] Filling method for each set tolerance (when the amount of HFC-32 to be filled is fixed) [2] Filling method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant including HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C is adopted as the filling constant and the calculated value is set as the filling amount of 100 wt% <Filling method for mixed refrigerant at 45°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> Item 4. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container to a destination container and / or equipment, wherein, in the liquid phase, HFC-32 is present in an amount of 21.5% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of 30% by weight to 4.0% by weight (target lower limit composition) of the target upper limit composition of the HFO-1132(E) from the start of the transfer to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 27.8% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

[0025] <Method for filling mixed refrigerant at 45°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> Item 5. A method for filling mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is transferred in liquid form from a supply container to a destination container and / or equipment, with respect to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in which case HFC-32 is present in the liquid phase at an amount of 21.5% by weight and HFO-1132(E) is present at an amount of 26.5% to 29.5% by weight, A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of the target upper limit composition of HFO-1132(E) from 29.5% by weight to 29.5% by weight - 3.0% by weight (target lower limit composition) of the HFO-1132(E) from the start of the transfer to completion of the transfer, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 28.3% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0026] <Method for filling mixed refrigerant at 45°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> Section 6. A method for filling mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container to a destination container and / or equipment, with respect to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, in which case HFC-32 is present in the liquid phase at an amount of 21.5% by weight and HFO-1132(E) is present at an amount of 27% to 29% by weight, A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of the target upper limit composition of HFO-1132(E) from 29% by weight to 29% by weight - 2.0% by weight (target lower limit composition) of the mixed refrigerant, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 28.8% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

[0027] 11. Item 11. 1.05 is used as the filling constant when the amount of HFC-32 is fixed. The filling method for mixed refrigerants is when the calculated value is set to a filling amount of 100 wt%, using the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant including HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C. 11. 1.05 is used as the filling constant. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container, which is filled in an amount of 100% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment, wherein the HFC-32 is present in the liquid phase at an amount of 21.4% by weight and the HFO-1132(E) is present at an amount of 26% to 30% by weight relative to 100% by weight of the total of the HFO-1132(E), HFO-1234yf, and HFC-32, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 11 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 11 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (11) (by weight %). 11 = -0.6a+30.027 (11)

[0028] <Method for filling a mixed refrigerant at 90% by weight of the maximum filling amount at 65°C> Item 12. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container, which is filled in an amount of 90% by weight or less of the maximum filling amount, to a destination container and / or equipment, wherein the HFC-32 is present in the liquid phase at an amount of 21.3% by weight and the HFO-1132(E) is present at an amount of 26% to 30% by weight, based on a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 12 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 12 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (12) (by weight %). 12 = -0.5a ​​+ 29.57 (12)

[0029] <Filling method of a mixed refrigerant with a filling amount of 80% by weight of the maximum filling amount at <65°C>> Item 13. A method for filling a mixed refrigerant, wherein the mixed refrigerant includes trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and in the liquid phase, the HFC-32 is present in an amount of 21.2% by weight, and the HFO-1132(E) is present in an amount of 26% to 30% by weight, based on a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32. When transferring the mixed refrigerant in a liquid state from a supply source container filled with the mixed refrigerant in an amount of 80% by weight or less of the maximum filling amount to a supply destination container and / or equipment, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply source container within the range of ±a% by weight of the target composition (28% by weight) of the HFO-1132(E) from the start to the completion of the transfer filling, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply source container immediately before the transfer filling is set to be (y 13 )% by weight (minimum value) or more and (28 + a)(maximum value)% by weight or less. A method for filling a mixed refrigerant. ±a: Set tolerance (a ≧ 0) y 13 : The minimum value of the HFO-1132(E) in the initial composition, and is a value represented by the following formula (13) (by weight). y 13 = -0.545a + 29.622 (13)​​<Method for filling a mixed refrigerant at 70% by weight of the maximum filling amount at 65°C> Section 14. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container, which is filled in an amount of 70% by weight or less of the maximum filling amount, to a destination container and / or equipment, wherein the HFC-32 is present in the liquid phase at an amount of 21.0% by weight and the HFO-1132(E) is present at an amount of 26% to 30% by weight, based on a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 14 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 14 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (14) (by weight %). 14 = -0.495a + 29.392 (14)

[0031] <Method for filling a mixed refrigerant in an amount of 60% by weight of the maximum filling amount at 65°C> Item 15. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state in which, with respect to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, HFC-32 is present in an amount of 20.8% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, and the mixed refrigerant is transferred in liquid from a supply container that is filled in an amount of 60% by weight or less of the maximum filling amount to a destination container and / or equipment, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 15 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 15 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (15) (by weight %). 15 = -0.495a + 29.292 (15)

[0032] <Method for filling a mixed refrigerant in an amount of 50% by weight of the maximum filling amount at 65°C> Item 16. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state in which, with respect to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, HFC-32 is present in an amount of 20.6% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, and the mixed refrigerant is transferred in liquid form from a supply container that is filled in an amount of 50% by weight or less of the maximum filling amount to a destination container and / or equipment, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 16 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 16 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (16) (by weight %). 16 = -0.545a + 29.328 (16)

[0033] 17. Item 17. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container, which is filled in an amount of 100% by weight or less of the maximum filling capacity of the supply container, to a destination container and / or equipment, wherein the HFC-32 is present in the liquid phase at an amount of 21.5% by weight and the HFO-1132(E) is present at an amount of 26% to 30% by weight, with respect to a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 17 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 17 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (17) (by weight %). 17 = -0.5a ​​+ 29.78 (17)

[0034] <Method for filling a mixed refrigerant at 90% by weight of the maximum filling amount at 45°C> Item 18. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container, which is filled in an amount of 90% by weight or less of the maximum filling amount, to a destination container and / or equipment, wherein the HFC-32 is present in the liquid phase at an amount of 21.4% by weight and the HFO-1132(E) is present at an amount of 26% to 30% by weight, based on a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 18 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 18 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (18) (by weight %). 18 = -0.5a ​​+ 29.7 (18)

[0035] <Method for filling a mixed refrigerant at 80% by weight of the maximum filling amount at 45°C> Item 19. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container, which is filled in an amount of 80% by weight or less of the maximum filling amount, to a destination container and / or equipment, wherein the HFC-32 is present in the liquid phase at an amount of 21.3% by weight and the HFO-1132(E) is present at an amount of 26% to 30% by weight, based on a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 19 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 19 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (19) (by weight %). 19 = -0.5a ​​+ 29.61 (19)

[0036] <Method for filling a mixed refrigerant in an amount of 70% by weight of the maximum filling amount at 45℃> Item 20. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state in which, with respect to a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, the HFC-32 is present in an amount of 21.2% by weight and the HFO-1132(E) is present in an amount of 26% to 30% by weight, and the mixed refrigerant is transferred in liquid form from a supply container that is filled in an amount of 70% by weight or less of the maximum filling amount to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 20 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 20 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (20) (by weight %). 20 = -0.495a + 29.468 (20)

[0037] <Method for filling a mixed refrigerant in an amount of 60% by weight of the maximum filling amount at 45℃> Section 21. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state in which, with respect to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, HFC-32 is present in an amount of 21.0% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, and the mixed refrigerant is transferred in liquid from a supply container that is filled in an amount of 60% by weight or less of the maximum filling amount to a destination container and / or equipment, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 21 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 21 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (21) (by weight %). 21 = -0.5a ​​+ 29.42 (21)

[0038] <Method for filling a mixed refrigerant in an amount of 50% by weight of the maximum filling amount at 45℃> Section 22. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is in which, in the liquid phase, HFC-32 is present in an amount of 20.8% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, with respect to a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, and is transferred in liquid from a supply container, which is filled in an amount of 50% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 22 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 22 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following equation (22) (by weight %). 22 = -0.495a + 29.268 (22)

[0039] Filling method for each set tolerance (when the filling amount of HFO-1234yf is fixed)

[11] Filling method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant including HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C is adopted as the filling constant and the calculated value is set as the filling amount of 100 wt% <Filling method for mixed refrigerant at 65°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> Item 31. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container to a destination container and / or equipment, with the HFO-1234yf present in an amount of 50.8% by weight and the HFO-1132(E) present in an amount of 26% to 30% by weight, based on a total weight of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32. A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of 30% by weight to 4.0% by weight (target lower limit composition) of the target upper limit composition of the HFO-1132(E) from the start of the transfer to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 27.7% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

[0040] <Method for filling mixed refrigerant at 65°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> Item 32. A method for filling mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is transferred in liquid form from a supply container to a destination container and / or equipment, with respect to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, in the liquid phase, HFO-1234yf is present in an amount of 50.8% by weight and HFO-1132(E) is present in an amount of 26.5% to 29.5% by weight, A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the source container from the start of transfer filling to the range of the target upper limit composition of HFO-1132(E) of 29.5% by weight to the target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition), the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the source container before the start of transfer filling is set to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0041] <Method for filling mixed refrigerant at 65°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> Item 33. A method for filling mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container to a destination container and / or equipment, with respect to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in which case HFO-1234yf is present in the liquid phase at an amount of 50.8% by weight and HFO-1132(E) is present at an amount of 27% to 29% by weight, A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of the target upper limit composition of HFO-1132(E) from 29% by weight to 29% by weight - 2.0% by weight (target lower limit composition) of the mixed refrigerant, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 28.7% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

[0042] Filling method for each set tolerance (when the filling amount of HFO-1234yf is fixed)

[12] Filling method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant including HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C is adopted as the filling constant and the calculated value is set as the filling amount of 100 wt% <Filling method for mixed refrigerant at 45°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> Item 34. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container to a destination container and / or equipment, with the total weight of HFO-1132(E), HFO-1234yf, and HFC-32 being 100% by weight, wherein in the liquid phase, HFO-1234yf is present in an amount of 50.5% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight. A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of 30% by weight to 4.0% by weight (target lower limit composition) of the target upper limit composition of the HFO-1132(E) from the start of the transfer to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 27.8% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

[0043] <Method for filling mixed refrigerant at 45°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> Item 35. A method for filling mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is transferred in liquid form from a supply container to a destination container and / or equipment, wherein, in the liquid phase, HFO-1234yf is present in an amount of 50.5% by weight and HFO-1132(E) is present in an amount of 26.5% to 29.5% by weight, based on a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of the target upper limit composition of HFO-1132(E) from 29.5% by weight to 29.5% by weight - 3.0% by weight (target lower limit composition) of the HFO-1132(E) from the start of the transfer to completion of the transfer, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 28.3% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0044] <Method for filling mixed refrigerant at 45°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> Item 36. A method for filling mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is transferred in liquid form from a supply container to a destination container and / or equipment, wherein, in the liquid phase, HFO-1234yf is present in an amount of 50.5% by weight and HFO-1132(E) is present in an amount of 27% to 29% by weight, based on a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of the target upper limit composition of HFO-1132(E) from 29% by weight to 29% by weight - 2.0% by weight (target lower limit composition) of the mixed refrigerant, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 28.8% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

[0045] Charging method for each charge amount (when the charge amount of HFO-1234yf is fixed)

[13] A charge constant is adopted by dividing 1.05 by the specific gravity of the gas (mixed refrigerant including HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C, and the calculated value is used as the charge amount for charging mixed refrigerant at 100 wt%. <Charging method for mixed refrigerant at 100 wt% of the maximum charge amount at 65°C> Section 41. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container, which is filled in an amount of 100% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment, wherein the mixed refrigerant is present in a liquid state in which, in the liquid phase, HFO-1234yf is present in an amount of 50.8% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, based on a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 41 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 41 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (41) (by weight %). 41 = -0.6a + 30.027 (41)

[0046] <Method for filling a mixed refrigerant at 90% by weight of the maximum filling amount at 65°C> Section 42. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container, which is filled in an amount of 90% by weight or less of the maximum filling amount, to a destination container and / or equipment, with respect to a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32, in the liquid phase, the HFO-1234yf is present in an amount of 51.0% by weight and the HFO-1132(E) is present in an amount of 26% to 30% by weight, when transferring the mixed refrigerant in liquid from a supply container, which is filled in an amount of 90% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 42 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 42 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following equation (42) (by weight %). 42 = -0.545a + 29.735 (42)

[0047] <Method for filling a mixed refrigerant at 80% by weight of the maximum filling amount at 65°C> Section 43. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container that is filled in an amount of 80% by weight or less of the maximum filling amount to a destination container and / or equipment, wherein, in the liquid phase, HFO-1234yf is present in an amount of 51.2% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, based on a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 43 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 43 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (43) (by weight %). 43 = -0.54a + 29.637 (43)

[0048] <Method for filling a mixed refrigerant at 70% by weight of the maximum filling amount at 65°C> Section 44. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state in which, with respect to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in an amount of 51.5% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, and is transferred in liquid form from a supply container that is filled in an amount of 70% by weight or less of the maximum filling amount to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 44 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 44 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (44) (by weight %). 44 = -0.54a + 29.553 (44)

[0049] <Method for filling a mixed refrigerant in an amount of 60% by weight of the maximum filling amount at 65°C> Section 45. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state in which, with respect to a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32, the HFO-1234yf is present in an amount of 51.9% by weight and the HFO-1132(E) is present in an amount of 26% to 30% by weight, and the mixed refrigerant is transferred in liquid form from a supply container that is filled in an amount of 60% by weight or less of the maximum filling amount to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 45 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 45 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (45) (by weight %). 45 = -0.535a + 29.435 (45)

[0050] <Method for filling a mixed refrigerant in an amount of 50% by weight of the maximum filling amount at 65°C> Section 46. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state in which, with respect to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in an amount of 52.4% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, and is transferred in liquid form from a supply container that is filled in an amount of 50% by weight or less of the maximum filling amount to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 46 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 46 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (46) (by weight %). 46 = -0.48a + 29.15 (46)

[0051] Charging method for each charge amount (when the charge amount of HFO-1234yf is fixed)

[14] A charge constant is adopted by dividing 1.05 by the specific gravity of the gas (mixed refrigerant including HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C, and the calculated value is used as the charge amount for charging mixed refrigerant at 100 wt%. <Charging method for mixed refrigerant at 100 wt% charge amount of the maximum charge amount at 45°C> Section 47. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container, which is filled in an amount of 100% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment, wherein the mixed refrigerant is present in a liquid state in which, in the liquid phase, HFO-1234yf is present in an amount of 50.5% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, based on a total of 100% by weight of the sum of HFO-1132(E), HFO-1234yf, and HFC-32, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 47 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 47 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (47) (by weight %). 47 = -0.5a ​​+ 29.78 (47)

[0052] <Method for filling a mixed refrigerant at 90% by weight of the maximum filling amount at 45°C> Section 48. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state from a supply container, which is filled in an amount of 90% by weight or less of the maximum filling amount, to a destination container and / or equipment, with respect to a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32, in the liquid phase, the HFO-1234yf is present in an amount of 50.7% by weight and the HFO-1132(E) is present in an amount of 26% to 30% by weight, when transferring the mixed refrigerant in liquid from a supply container, which is filled in an amount of 90% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 48 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 48 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (48) (by weight %). 48 = -0.495a + 29.688 (48)

[0053] <Method for filling a mixed refrigerant in an amount of 80% by weight of the maximum filling amount at 45℃> Item 49. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is in which, in the liquid phase, HFO-1234yf is present in an amount of 50.9% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, with respect to a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, when transferring the mixed refrigerant in liquid from a supply container that is filled in an amount of 80% by weight or less of the maximum filling amount to a destination container and / or equipment, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 49 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 49 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (49) (by weight %). 49 = -0.495a + 29.592 (49)

[0054] <Method for filling a mixed refrigerant in an amount of 70% by weight of the maximum filling amount at 45℃> Item 50. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is in which, in the liquid phase, HFO-1234yf is present in an amount of 51.1% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, with respect to a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, and is transferred in liquid from a supply container that is filled in an amount of 70% by weight or less of the maximum filling amount to a destination container and / or equipment, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 50 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 50 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (50) (by weight %). 50 = -0.54a + 29.633 (50)

[0055] <Method for filling a mixed refrigerant in an amount of 60% by weight of the maximum filling amount at 45℃> Item 51. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is in which, in the liquid phase, HFO-1234yf is present in an amount of 51.4% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, with respect to a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, and is transferred in liquid from a supply container that is filled in an amount of 60% by weight or less of the maximum filling amount to a destination container and / or equipment, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 51 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 51 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (51) (by weight %). 51 = -0.49a + 29.38 (51)

[0056] <Method for filling a mixed refrigerant in an amount of 50% by weight of the maximum filling amount at 45℃> Item 52. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant is present in a liquid state in which, with respect to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in an amount of 51.9% by weight and HFO-1132(E) is present in an amount of 26% to 30% by weight, and is transferred in liquid form from a supply container that is filled in an amount of 50% by weight or less of the maximum filling amount to a destination container and / or equipment, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 52 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 52 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (52) (by weight %). 52 = -0.535a + 29.412 (52)

[0057] By filling a mixed refrigerant according to the filling method of this disclosure, it is possible to keep the compositional changes associated with the transfer and filling of a non-azeotropic mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 within an acceptable range.

[0058] The embodiments included in this disclosure are described in detail below.

[0059] <Definition of Terms> In this specification, the term "refrigerant" includes at least compounds that have been assigned a refrigerant number (ASHRAE number) beginning with R, as defined by ISO 817 (International Organization for Standardization), and also includes compounds that have equivalent refrigerant properties even if they have not yet been assigned a refrigerant number.

[0060] Refrigerants are broadly classified into fluorocarbon compounds and non-fluorocarbon compounds based on their chemical structure. Fluorocarbon compounds include hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs). Non-fluorocarbon compounds include propane (R290), propylene (R1270), butane (R600), isobutane (R600a), etc.

[0061] In this specification, the term “composition containing a refrigerant” includes at least: (1) the refrigerant itself (including refrigerant mixtures); (2) a composition further comprising other components which can be used to obtain a working fluid for a refrigerator by mixing with at least refrigerant oil; and (3) a refrigeration working fluid containing refrigerant oil.

[0062] In this specification, the composition in (2) is referred to as "refrigerant composition" to distinguish it from the refrigerant itself (including mixtures of refrigerants) in (1).

[0063] In this specification, the working fluid for refrigerators referred to in (3) is referred to as "working fluid containing refrigeration oil" to distinguish it from the "refrigerant composition" referred to in (2).

[0064] In this specification, the terms “contains” and “includes” include the concepts of “contains,” “includes,” “substantially consist of,” and “consisting solely of.”

[0065] In this specification, when numerical ranges are described in steps, the upper or lower limit of a numerical range in one step may be arbitrarily combined with the upper or lower limit of a numerical range in another step.

[0066] In this specification, the upper or lower limits of the numerical ranges described may be replaced with values ​​shown in the examples or values ​​that can be uniquely derived from the examples.

[0067] In this specification, the following terms are used: Trans-1,2-difluoroethylene: HFO-1132(E), R1132(E), (E)-1,2-difluoroethylene, boiling point -52.5℃ 2,3,3,3-tetrafluoropropene: HFO-1234yf, R1234yf, boiling point -29.4℃ Difluoromethane: HFC-32, R32, boiling point -51.7℃ Refrigerant number R479A: R1132(E): 28.0wt%, R1234yf: 50.5wt%, R32: 21.5wt%

[0068] In recent years, from the perspective of preventing global warming, a review of refrigerants has been underway in the refrigeration and air conditioning sector. In the car air conditioning sector, refrigerants with a GWP of 150 or higher (GWP: Global warming potential) are restricted due to the European F-gas regulations.

[0069] Currently used refrigerants such as R-410A (GWP 2088), R-404A (GWP 3922), R-407C (GWP 1770), and 1,1,1,2-tetrafluoroethane (HFC-134a) (GWP 1430) have high GWPs. In developed countries, stationary refrigeration and air conditioning equipment is regulated not only from the perspective of CO2 reduction but also from the perspective of HFC (hydrofluorocarbon) reduction, and alternative refrigerants are being developed.

[0070] The selection of a refrigerant is considered from a multifaceted perspective, taking into account the application, operating conditions, and other factors, including environmental friendliness, safety, performance, and economic efficiency. Currently, various types of refrigerants are being proposed, along with fluorocarbons and natural refrigerants.

[0071] Currently, no refrigerant exists that satisfies all requirements regarding flammability, efficiency, GWP value, etc. Therefore, refrigerant selection is made on a case-by-case basis, depending on the application, operating conditions, etc.

[0072] Among refrigerants, 2,3,3,3-tetrafluoropropene (HFO-1234yf) has a GWP of less than 1 (GWP AR5) and is being considered for use in car air conditioning and large-scale refrigeration and air conditioning applications. Trans-1,2-difluoroethylene (HFO-1132(E)) also has a GWP of less than 1 (GWP AR5) and is being considered for use in large-scale refrigeration and air conditioning applications. Difluoromethane (HFC-32) is a well-balanced refrigerant for air conditioning in terms of environmental friendliness, energy efficiency, safety, and economic viability.

[0073] In recent years, non-azeotropic refrigerant mixtures, which are mixtures of various refrigerants, have been proposed to improve refrigerant performance and make them non-flammable. Many mixtures of HFCs and HFOs (Hydrofluoroolefins) such as HFO-1234yf are non-azeotropic mixtures, and therefore, when phase changes occur, such as evaporation and condensation, compositional changes occur. This is because components with low boiling points evaporate easily, and components with high boiling points condense easily. This tendency is particularly pronounced in the case of evaporation, i.e., phase change from liquid to vapor, and is especially significant when the difference in boiling points of the components of the mixture is large. Therefore, when transferring such non-azeotropic mixtures from a supply container to a destination container, it is generally done by extracting from the liquid side first to avoid phase changes.

[0074] When extracting from the liquid side, a large difference in boiling points between the components of the mixture can cause a compositional change of several weight percent (wt%). This is because the extraction process leads to a decrease in pressure, an increase in the gas phase space, etc., causing evaporation of low-boiling-point components in the liquid phase. This several weight percent compositional change can significantly alter the refrigerant's performance, leading not only to a decrease in capacity and efficiency, but also to a significant impact on the safety of the refrigerant, such as its flammability.

[0075] The mixed refrigerant, which consists of two next-generation refrigerants, HFO-1132(E) and HFO-1132(E), is a non-azeotropic mixed refrigerant, raising concerns about compositional changes during the transfer and refilling process.

[0076] (Table 1) HFO-1132(E) (boiling point -52.5°C) and HFC-32 (boiling point -51.7°C), used as mixed refrigerants with HFO-1234yf (boiling point -29.4°C), have very high refrigeration capacity. However, the boiling point difference with HFO-1234yf is nearly 20°C, and the compositional changes that occur when transferring the refrigerants from the supply source containers such as cylinders and tank trucks to the supply destination refrigeration and air conditioning equipment and cylinders can become a level that cannot be ignored in terms of performance.

[0077] In addition to the performance aspects of individual refrigerants, ensuring that the compositional changes of a mixed refrigerant remain within the specified tolerances is crucial for quality assurance.

[0078] If a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 is transferred at 40°C without any countermeasures, the composition of HFO-1132(E) may deviate from the target composition by up to 3 wt% to 4 wt% once all of the source liquid has evaporated. In this case, the compositional variation from the target composition will be approximately ±4 wt%, and the refrigerant's cooling capacity and energy efficiency (COP, Coefficient of Performance), etc., as expected with the target composition, cannot be guaranteed. For this reason, it is important to minimize the compositional variation of the mixed refrigerant as much as possible.

[0079] Traditionally, the composition of mixed refrigerants has varied greatly depending on the type and composition ratio of the non-azeotropic refrigerant. It is difficult to predict the range of compositional variation of a mixed refrigerant without any actual measurements.

[0080] This disclosure makes it possible to predict in advance the range of compositional variations in a mixed refrigerant.

[0081] In this disclosure, the boiling point of HFO-1132(E) (boiling point -52.5°C) is lower than that of HFO-1234yf (boiling point -29.4°C) or HFC-32 (boiling point -51.7°C). During transfer and refilling, when the refrigerant is removed and the resulting space is filled by evaporation from the liquid phase side, more HFO-1132(E) evaporates, causing the concentration of HFO-1132(E) in the liquid phase to decrease. Therefore, it is preferable to fill the supply container before transfer and refilling with more HFO-1132(E) than the target composition.

[0082] In this disclosure, regarding the amount of liquid filling in the supply container, the smaller the initial filling amount, the smaller the range of compositional changes due to the liquid transfer from the supply container to the destination container and / or equipment, from the start to the completion of the transfer.

[0083] In this disclosure, formulas that satisfy a filling method with an initial filling amount of 100% by weight also satisfy filling methods with an initial filling amount between 100% by weight and 0% by weight. Formulas that satisfy a filling method with an initial filling amount of 90% by weight also satisfy filling methods with an initial filling amount between 90% by weight and 0% by weight. Formulas that satisfy a filling method with an initial filling amount of 80% by weight also satisfy filling methods with an initial filling amount between 80% by weight and 0% by weight. Formulas that satisfy a filling method with an initial filling amount of 70% by weight also satisfy filling methods with an initial filling amount between 70% by weight and 0% by weight. Formulas that satisfy a filling method with an initial filling amount of 60% by weight also satisfy filling methods with an initial filling amount between 60% by weight and 0% by weight. Formulas that satisfy a filling method with an initial filling amount of 50% by weight also satisfy filling methods with an initial filling amount between 50% by weight and 0% by weight.

[0084] In this disclosure, the difference between the target upper limit composition and the target lower limit composition is referred to as the Composition Tolerance. The tolerance is determined when the composition of the refrigerant mixture is registered with ASHRAE Standard 2013 (Designation and Safety Classification of Refrigerants), etc.

[0085] This disclosure shows an example of a transfer and filling method when the handling temperature during transfer and filling is 40°C. Since Japan's High Pressure Gas Safety Act prohibits the handling of containers at temperatures above 40°C, the handling temperature during transfer and filling in Japan is between 0°C and 40°C.

[0086] In this disclosure, the higher the temperature during transfer (handling), the greater the change in composition due to the transfer from the source container to the destination container and / or equipment when transferring liquid from the source container to the destination container and / or equipment, from the start to the completion of the transfer. Therefore, by applying the transfer conditions at a handling temperature of 40°C, it is also possible to apply them to handling temperatures from 0°C to 40°C.

[0087] Filling Method for Each Filling Amount In the filling method for each filling amount of this disclosure, "±a" (set tolerance) is the difference between the maximum and minimum values ​​of the allowable range when the target composition (x) of HFO-1132(E) is used as the reference value, and is the allowable "deviation" from the target composition.

[0088] The value of a is preferably set to the range 2 ≤ a ≤ 4.

[0089] The method of filling mixed refrigerants in each filling volume of the present disclosure allows the compositional changes in the receiving container and / or equipment to be kept within an acceptable range of ±a% by weight of the target composition until the transfer is completed, by setting the liquid phase mixing ratio of HFO-1132(E) in the supply container before transfer to a specific range, even if the amount of mixed refrigerant filled in the supply container is 100% by weight of the maximum filling volume.

[0090] In the filling method for each filling volume of this disclosure, the "target composition" of HFO-1132(E) is the HFO-1132(E) concentration in the overall composition (liquid phase + gas phase) of the mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the container and / or equipment of the supply destination.

[0091] Filling method for each set tolerance (when the amount of HFC-32 to be filled is fixed) [1] Filling method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C is adopted as the filling constant and the calculated value is set as the filling amount of 100 wt%

[0092] (1) Filling method when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight (Table 2) <Filling method of mixed refrigerant at 65°C (range from upper limit (by weight) to (upper limit - 4.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range of the target upper limit composition of HFO-1132(E) of 30% by weight to the target upper limit composition of 30% by weight - 4.0% by weight (target lower limit composition).

[0093] The "Target Upper Limit Composition: 30% by weight" is the maximum value within which the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 is permitted to fall within the range required in the supplied container and / or equipment.

[0094] The "Target Lower Limit Composition: 30%-4.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0095] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant comprises HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is supplied from the supply container. When transferring and filling the container and / or equipment in liquid form, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container from the start to the completion of the transfer is kept within the range of 30% by weight (target upper limit composition) to 30% by weight - 4.0% by weight (target lower limit composition). This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 27.7% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

[0096] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the composition change in the destination container and / or equipment can be kept within the range of the target upper limit composition of 30%-4.0% by weight (target lower limit composition) to the target upper limit composition of 30% by weight until the transfer filling is completed.

[0097] The liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.7% by weight (minimum value) and 30% by weight (target upper composition), in order to keep the target upper composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower composition).

[0098] 30% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0099] 27.7% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply container.

[0100] (2) Filling method when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight (Table 8) <Filling method of mixed refrigerant at 65°C (range from upper limit (by weight) to (upper limit - 3.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range of the target upper limit composition of HFO-1132(E) of 29.5% by weight to the target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition).

[0101] The "Target Upper Limit Composition: 29.5% by weight" is the maximum value within which the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 is permissible to fall within the range required in the supplied container and / or equipment.

[0102] The "Target Lower Limit Composition: 29.5% by weight - 3.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0103] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant contains HFO-1132(E), HFO-1234yf, and HFC-32, and the amount of HFO-1132(E) in the liquid phase is 26.5% to 29.5% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant is supplied from the supply container. When transferring and / or filling the container and / or equipment with liquid, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container is kept within the range of 29.5% by weight to 3.0% by weight (target lower limit composition) of the target upper limit composition of HFO-1132(E), from the start of the transfer to the completion of the transfer. This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0104] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the compositional changes in the destination container and / or equipment can be kept within the range of a target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition) to a target upper limit composition of 29.5% by weight until the transfer filling is completed.

[0105] Liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container This disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper composition) or less, in order to keep the target upper composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower composition) of the target upper composition of HFO-1132(E).

[0106] 29.5% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0107] 28.2% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container.

[0108] (3) Filling method when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight (Table 14) <Filling method of mixed refrigerant at 65°C (range from upper limit (by weight) to (upper limit - 2.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range of the target upper limit composition (x) by weight to the target upper limit composition (x) by weight - 2.0% by weight (target lower limit composition).

[0109] The "Target Upper Limit Composition: 29% by weight" is the maximum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0110] The "Target Lower Limit Composition: 29%-2.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0111] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant contains HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 27% to 29% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is supplied from the supply container. When transferring and / or filling the container and / or equipment in liquid form, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container is kept within the range of 29% by weight (target upper limit composition) to 29% by weight - 2.0% by weight (target lower limit composition) of HFO-1132(E) from the start of the transfer to the completion of the transfer. This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 28.7% by weight (minimum value) and 29% by weight (target upper limit composition).

[0112] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the composition change in the destination container and / or equipment can be kept within the range of a target upper limit composition of 29% by weight - 2.0% by weight (target lower limit composition) to a target upper limit composition of 29% by weight until the transfer filling is completed.

[0113] The liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to between 28.7% by weight (minimum value) and 29% by weight (target upper limit composition), in order to keep the target upper limit composition of HFO-1132(E) within the range of 29% by weight to 29% by weight.

[0114] 29% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0115] 28.7% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply container.

[0116] Filling method for each set tolerance (when the amount of HFC-32 to be filled is fixed) [2] Filling method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant including HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C is adopted as the filling constant and the calculated value is set as the filling amount of 100 wt%

[0117] (1) Filling method when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight (Table 20) <Filling method of mixed refrigerant at 45°C (range from upper limit (by weight) to (upper limit - 4.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range of the target upper limit composition (x) by weight of HFO-1132(E) to the target upper limit composition of 30% by weight - 4.0% by weight (target lower limit composition).

[0118] The "Target Upper Limit Composition: 30% by weight" is the maximum value within which the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 is permitted to fall within the range required in the supplied container and / or equipment.

[0119] The "Target Lower Limit Composition: 30%-4.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0120] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant comprises HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is supplied from the supply container. When transferring and filling the container and / or equipment in liquid form, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container from the start to the completion of the transfer is kept within the range of 30% by weight (target upper limit composition) to 30% by weight - 4.0% by weight (target lower limit composition). This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 27.8% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

[0121] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the composition change in the destination container and / or equipment can be kept within the range of the target upper limit composition of 30%-4.0% by weight (target lower limit composition) to the target upper limit composition of 30% by weight until the transfer filling is completed.

[0122] The liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.8% by weight (minimum value) and 30% by weight (target upper composition), in order to keep the target upper composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower composition).

[0123] 30% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0124] 27.8% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply container.

[0125] (2) Filling method when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight (Table 26) <Filling method of mixed refrigerant at 45°C (range from upper limit (by weight) to (upper limit - 3.0) (by weight))> When transferring mixed refrigerant from the source container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the source container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container from the start to the completion of the transfer within the range of the target upper limit composition of HFO-1132(E) of 29.5% by weight to the target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition).

[0126] The "Target Upper Limit Composition: 29.5% by weight" is the maximum value within which the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 is permissible to fall within the range required in the supplied container and / or equipment.

[0127] The "Target Lower Limit Composition: 29.5% by weight - 3.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0128] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant contains HFO-1132(E), HFO-1234yf, and HFC-32, and the amount of HFO-1132(E) in the liquid phase is 26.5% to 29.5% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant is supplied from the supply container. When transferring and / or filling the container and / or equipment with liquid, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container is kept within the range of 29.5% by weight to 3.0% by weight (target lower limit composition) of the target upper limit composition of HFO-1132(E), from the start of the transfer to the completion of the transfer. This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 28.3% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0129] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the compositional changes in the destination container and / or equipment can be kept within the range of a target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition) to a target upper limit composition of 29.5% by weight until the transfer filling is completed.

[0130] Liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container This disclosure is characterized in that, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to the target upper limit composition (x) by weight, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling is set to 28.3% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0131] 29.5% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0132] 28.3% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply container.

[0133] (3) Filling method when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight (Table 32) <Filling method of mixed refrigerant at 45°C (range from upper limit (by weight) to (upper limit - 2.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range of the target upper limit composition of HFO-1132(E) of 29% by weight to the target upper limit composition of 29% by weight - 2.0% by weight (target lower limit composition).

[0134] The "Target Upper Limit Composition: 29% by weight" is the maximum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0135] The "Target Lower Limit Composition: 29%-2.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0136] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant contains HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 27% to 29% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is supplied from the supply container. When transferring and / or filling the container and / or equipment in liquid form, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container is kept within the range of 29% by weight (target upper limit composition) to 29% by weight - 2.0% by weight (target lower limit composition) of HFO-1132(E). This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 28.8% by weight (minimum value) and 29% by weight (target upper limit composition).

[0137] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the composition change in the destination container and / or equipment can be kept within the range of a target upper limit composition of 29% by weight - 2.0% by weight (target lower limit composition) to a target upper limit composition of 29% by weight until the transfer filling is completed.

[0138] The liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.8% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29% by weight to 29% by weight.

[0139] 29% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0140] 28.8% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply container.

[0141] Charging method for each charge amount (when the charge amount of HFC-32 is fixed) [3] Charging method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C is adopted as the charging constant and the calculated value is set as the charge amount of 100 wt%

[0142] (1) Method for filling a mixed refrigerant at a filling amount of 100% by weight of the maximum filling amount (Tables 2, 8, and 14) <Method for filling a mixed refrigerant at 65°C (100% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 100% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 11 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 11 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (11) (by weight %). 11 = -0.6a+30.027 (11)

[0143] Equation (11) allows us to derive a straight line for fixed HFC-32 filling amounts, based on the lower limit compositions of HFO-1132(E) in Tables 2 (filling amount 100wt%, 65℃, a=4), 8 (filling amount 100wt%, 65℃, a=3), and 14 (filling amount 100wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0144] (2) Method for filling a mixed refrigerant at a filling amount of 90% by weight of the maximum filling amount (Tables 3, 9, and 15) <Method for filling a mixed refrigerant at 65°C (filling amount of 90% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 90% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 12 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 12 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (12) (by weight %). 12 = -0.5a ​​+ 29.57 (12)

[0145] Equation (12) allows us to derive a straight line for fixed HFC-32 filling amounts, based on the lower limit compositions of HFO-1132(E) in Tables 3 (filling amount 90 wt%, 65°C, a=4), Table 9 (filling amount 90 wt%, 65°C, a=3), and Table 15 (filling amount 90 wt%, 65°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0146] (3) Method for filling a mixed refrigerant at a filling amount of 80% by weight of the maximum filling amount (Tables 4, 10, and 16) <Method for filling a mixed refrigerant at 65°C (80% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 80% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 13 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 13 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (13) (by weight %). 13 = -0.545a + 29.622 (13)

[0147] Equation (13) allows us to derive a straight line for fixed HFC-32 filling amounts, based on the lower limit compositions of HFO-1132(E) in Tables 4 (filling amount 80 wt%, 65°C, a=4), 10 (filling amount 80 wt%, 65°C, a=3), and 16 (filling amount 80 wt%, 65°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0148] (4) Method for filling a mixed refrigerant at a filling amount of 70% by weight of the maximum filling amount (Tables 5, 11, and 17) <Method for filling a mixed refrigerant at 65°C (70% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 70% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 14 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 14 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (14) (by weight %). 14 = -0.495a + 29.392 (14)

[0149] Equation (14) allows us to derive a straight line for fixed HFC-32 filling amounts, based on the lower limit compositions of HFO-1132(E) in Tables 5 (filling amount 70 wt%, 65°C, a=4), Table 11 (filling amount 70 wt%, 65°C, a=3), and Table 17 (filling amount 70 wt%, 65°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0150] (5) Method for filling a mixed refrigerant at a filling amount of 60% by weight of the maximum filling amount (Tables 6, 12, and 18) <Method for filling a mixed refrigerant at 65°C (60% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 60% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 15 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 15 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (15) (by weight %). 15 = -0.495a + 29.292 (15)

[0151] Equation (15) can derive a straight line based on the respective lower limit compositions of HFO-1132(E) in Table 6 (filling amount 60 wt%, 65 °C, a = 4), Table 12 (filling amount 60 wt%, 65 °C, a = 3), and Table 18 (filling amount 60 wt%, 65 °C, a = 2) when fixing the filling amount of HFC-32 for setting tolerances (a = 4, 3, and 2).

[0152] (6) Filling method of mixed refrigerant with 50 wt% of the maximum filling amount (Table 7, Table 13, Table 19) <Filling method of mixed refrigerant at <65 °C (50 wt% of the maximum filling amount)> A filling method of a mixed refrigerant, wherein the mixed refrigerant includes trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When liquid-transfer filling from a supply source container filled with the mixed refrigerant in an amount of 50 wt% or less of the maximum filling amount to a supply destination container and / or equipment, for the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply source container from the start to the completion of the transfer filling to be within the range of ±a wt% of the target composition (28 wt%) of HFO-1132(E), the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container immediately before the transfer filling is set to be 16 (y 16 ) wt% (minimum value) or more and (28 + a) (maximum value) wt% or less. ±a: Setting tolerance (a ≧ 0), preferably a = 2 - 4. y 16 : The minimum value in the initial composition of HFO-1132(E), which is a value represented by the following formula (16) (wt%). y 16 = -0.545a + 29.328 (16)

[0153] Equation (16) allows us to derive straight lines for fixed HFC-32 filling amounts, based on the lower limit compositions of HFO-1132(E) in Tables 7 (filling amount 50 wt%, 65°C, a=4), Table 13 (filling amount 50 wt%, 65°C, a=3), and Table 19 (filling amount 50 wt%, 65°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0154] Charging method for each charge amount (when the charge amount of HFC-32 is fixed) [4] A charging constant is adopted by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C, and the calculated value is used as the charging amount for the mixed refrigerant.

[0155] (1) Method for filling a mixed refrigerant at a filling amount of 100% by weight of the maximum filling amount (Tables 20, 26, and 32) <Method for filling a mixed refrigerant at 45°C (100% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 100% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 17 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 17 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (17) (by weight %).17 = -0.5a ​​+ 29.78 (17)

[0156] Equation (17) allows us to derive a straight line for fixed HFC-32 filling amounts, based on the lower limit compositions of HFO-1132(E) in Tables 20 (filling amount 100 wt%, 45°C, a=4), 26 (filling amount 100 wt%, 45°C, a=3), and 32 (filling amount 100 wt%, 45°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0157] (2) Method for filling a mixed refrigerant at a filling amount of 90% by weight of the maximum filling amount (Tables 21, 27, and 33) <Method for filling a mixed refrigerant at 45°C (filling amount of 90% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 90% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 18 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 18 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (18) (by weight %). 18 = -0.5a ​​+ 29.7 (18)

[0158] Equation (18) can derive a straight line based on the respective lower limit compositions of HFO-1132(E) in Table 21 (filling amount 90 wt%, 45 °C, a = 4), Table 27 (filling amount 90 wt%, 45 °C, a = 3), and Table 33 (filling amount 90 wt%, 45 °C, a = 2) when fixing the filling amount of HFC-32 for setting tolerances (a = 4, 3, and 2).

[0159] (3) Filling method of the mixed refrigerant with a filling amount of 80% by weight of the maximum filling amount (Tables 22, 28, 34) <Filling method of the mixed refrigerant at 45 °C (filling amount of 80% by weight of the maximum filling amount)> A filling method of the mixed refrigerant, wherein the mixed refrigerant contains trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and in the liquid phase, the HFO-1132(E) is present in an amount of 26% to 30% by weight with respect to a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32. When transferring the mixed refrigerant in a liquid state from a supply source container filled with the mixed refrigerant in an amount of 80% or less by weight of the maximum filling amount to a supply destination container and / or equipment, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply source container within the range of ±a% by weight of the target composition (28% by weight) of the HFO-1132(E) from the start to the completion of the transfer filling, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply source container immediately before the transfer filling is set to be not less than (y 19 )% by weight (minimum value) and not more than (28 + a)% by weight (maximum value). ±a: Setting tolerance (a ≥ 0), preferably a = 2 to 4. y 19 : The minimum value in the initial composition of HFO-1132(E), which is a value represented by the following formula (19) (% by weight). y <​​​Equation (19) allows us to derive straight lines for fixed HFC-32 filling amounts, based on the respective lower limit compositions of HFO-1132(E) in Tables 22 (filling amount 80 wt%, 45°C, a=4), 28 (filling amount 80 wt%, 45°C, a=3), and 34 (filling amount 80 wt%, 45°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0161] (4) Method for filling a mixed refrigerant at a filling amount of 70% by weight of the maximum filling amount (Tables 23, 29, and 35) <Method for filling a mixed refrigerant at 45°C (70% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 70% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 20 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 20 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (20) (by weight %). 20 = -0.495a + 29.468 (20)

[0162] Equation (20) allows us to derive a straight line for fixed HFC-32 filling amounts, based on the lower limit compositions of HFO-1132(E) in Tables 23 (filling amount 70 wt%, 45°C, a=4), 29 (filling amount 70 wt%, 45°C, a=3), and 35 (filling amount 70 wt%, 45°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0163] (5) Method for filling a mixed refrigerant in an amount of 60% by weight of the maximum filling amount (Tables 24, 30, and 36) <Method for filling a mixed refrigerant at 45°C (60% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 60% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 21 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 21 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (21) (by weight %). 21 = -0.5a ​​+ 29.42 (21)

[0164] Equation (21) allows us to derive a straight line for fixed HFC-32 filling amounts, based on the respective lower limit compositions of HFO-1132(E) in Tables 24 (filling amount 60 wt%, 45°C, a=4), 30 (filling amount 60 wt%, 45°C, a=3), and 36 (filling amount 60 wt%, 45°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0165] (6) Method for filling a mixed refrigerant in an amount of 50% by weight of the maximum filling amount (Tables 25, 31, and 37) <Method for filling a mixed refrigerant at 45°C (50% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 50% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 22 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 22 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following equation (22) (by weight %). 22 = -0.495a + 29.268 (22)

[0166] Equation (22) allows us to derive a straight line for fixed HFC-32 filling amounts, based on the lower limit compositions of HFO-1132(E) in Tables 25 (filling amount 50 wt%, 45°C, a=4), 31 (filling amount 50 wt%, 45°C, a=3), and 37 (filling amount 50 wt%, 45°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0167] Filling method for each set tolerance (when the amount of HFO-1234yf filled is fixed)

[11] Filling method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C is adopted as the filling constant and the calculated value is set as the filling amount of 100 wt%

[0168] (1) Filling method when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight (Table 38) <Filling method for mixed refrigerant at 65°C (range from upper limit (by weight) to (upper limit - 4.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range of the target upper limit composition of HFO-1132(E) of 30% by weight to the target upper limit composition of 30% by weight - 4.0% by weight (target lower limit composition).

[0169] The "Target Upper Limit Composition: 30% by weight" is the maximum value within which the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 is permitted to fall within the range required in the supplied container and / or equipment.

[0170] The "Target Lower Limit Composition: 30%-4.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0171] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant comprises HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is supplied from the supply container. When transferring and filling the container and / or equipment in liquid form, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container from the start to the completion of the transfer is kept within the range of 30% by weight (target upper limit composition) to 30% by weight - 4.0% by weight (target lower limit composition). This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 27.7% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

[0172] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the composition change in the destination container and / or equipment can be kept within the range of the target upper limit composition of 30%-4.0% by weight (target lower limit composition) to the target upper limit composition of 30% by weight until the transfer filling is completed.

[0173] The liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.7% by weight (minimum value) and 30% by weight (target upper composition), in order to keep the target upper composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower composition).

[0174] 30% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0175] 27.7% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply container.

[0176] (2) Filling method when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight (Table 44) <Filling method of mixed refrigerant at 65°C (range from upper limit (by weight) to (upper limit - 3.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range of the target upper limit composition of HFO-1132(E) of 29.5% by weight to the target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition).

[0177] The "Target Upper Limit Composition: 29.5% by weight" is the maximum value within which the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 is permissible to fall within the range required in the supplied container and / or equipment.

[0178] The "Target Lower Limit Composition: 29.5% by weight - 3.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0179] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant contains HFO-1132(E), HFO-1234yf, and HFC-32, and the amount of HFO-1132(E) in the liquid phase is 26.5% to 29.5% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant is supplied from the supply container. When transferring and / or filling the container and / or equipment with liquid, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container is kept within the range of 29.5% by weight to 3.0% by weight (target lower limit composition) of the target upper limit composition of HFO-1132(E), from the start of the transfer to the completion of the transfer. This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0180] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the compositional changes in the destination container and / or equipment can be kept within the range of a target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition) to a target upper limit composition of 29.5% by weight until the transfer filling is completed.

[0181] Liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container This disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper composition) or less, in order to keep the target upper composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower composition) of the target upper composition of HFO-1132(E).

[0182] 29.5% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0183] 28.2% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container.

[0184] (3) Filling method when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight (Table 50) <Filling method of mixed refrigerant at 65°C (range from upper limit (by weight) to (upper limit - 2.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range of the target upper limit composition (x) by weight to the target upper limit composition (x) by weight - 2.0% by weight (target lower limit composition).

[0185] The "Target Upper Limit Composition: 29% by weight" is the maximum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0186] The "Target Lower Limit Composition: 29%-2.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0187] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant contains HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 27% to 29% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is supplied from the supply container. When transferring and / or filling the container and / or equipment in liquid form, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container is kept within the range of 29% by weight (target upper limit composition) to 29% by weight - 2.0% by weight (target lower limit composition) of HFO-1132(E) from the start of the transfer to the completion of the transfer. This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 28.7% by weight (minimum value) and 29% by weight (target upper limit composition).

[0188] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the composition change in the destination container and / or equipment can be kept within the range of a target upper limit composition of 29% by weight - 2.0% by weight (target lower limit composition) to a target upper limit composition of 29% by weight until the transfer filling is completed.

[0189] The liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to between 28.7% by weight (minimum value) and 29% by weight (target upper limit composition), in order to keep the target upper limit composition of HFO-1132(E) within the range of 29% by weight to 29% by weight.

[0190] 29 is the target upper limit composition (by weight) for HFO-1132(E).

[0191] 28.7% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply container.

[0192] Filling method for each set tolerance (when the amount of HFO-1234yf filled is fixed)

[12] Filling method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C is adopted as the filling constant and the calculated value is set as the filling amount of 100 wt%

[0193] (1) Filling method when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight (Table 56) <Filling method of mixed refrigerant at 45°C (range from upper limit (by weight) to (upper limit - 4.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range from the target upper limit composition (x) by weight of HFO-1132(E) to the target upper limit composition of 30% by weight - 4.0% by weight (target lower limit composition).

[0194] The "Target Upper Limit Composition: 30% by weight" is the maximum value within which the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 is permitted to fall within the range required in the supplied container and / or equipment.

[0195] The "Target Lower Limit Composition: 30%-4.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0196] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant comprises HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is supplied from the supply container. When transferring and filling the container and / or equipment in liquid form, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container from the start to the completion of the transfer is kept within the range of 30% by weight (target upper limit composition) to 30% by weight - 4.0% by weight (target lower limit composition). This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 27.8% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

[0197] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the composition change in the destination container and / or equipment can be kept within the range of the target upper limit composition of 30%-4.0% by weight (target lower limit composition) to the target upper limit composition of 30% by weight until the transfer filling is completed.

[0198] The liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.8% by weight (minimum value) and 30% by weight (target upper composition), in order to keep the target upper composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower composition).

[0199] 30% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0200] 27.8% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply container.

[0201] (2) Filling method when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight (Table 62) <Filling method of mixed refrigerant at 45°C (range from upper limit (by weight) to (upper limit - 3.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range of the target upper limit composition of HFO-1132(E) of 29.5% by weight to the target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition).

[0202] The "Target Upper Limit Composition: 29.5% by weight" is the maximum value within which the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 is permissible to fall within the range required in the supplied container and / or equipment.

[0203] The "Target Lower Limit Composition: 29.5% by weight - 3.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0204] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant contains HFO-1132(E), HFO-1234yf, and HFC-32, and the amount of HFO-1132(E) in the liquid phase is 26.5% to 29.5% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant is supplied from the supply container. When transferring and / or filling the container and / or equipment with liquid, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container is kept within the range of 29.5% by weight to 3.0% by weight (target lower limit composition) of the target upper limit composition of HFO-1132(E), from the start of the transfer to the completion of the transfer. This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 28.3% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0205] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the compositional changes in the destination container and / or equipment can be kept within the range of a target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition) to a target upper limit composition of 29.5% by weight until the transfer filling is completed.

[0206] Liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container This disclosure is characterized in that, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to the target upper limit composition (x) by weight, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling is set to 28.3% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0207] 29.5% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0208] 28.3% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply container.

[0209] (3) Filling method when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight (Table 68) <Filling method of mixed refrigerant at 45°C (range from upper limit (by weight) to (upper limit - 2.0) (by weight))> When transferring mixed refrigerant from the supplier container to the destination container and / or equipment, the mixing ratio of the mixed refrigerant in the supplier container before the transfer is carried out will be described in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container from the start to the completion of the transfer within the range of the target upper limit composition of HFO-1132(E) of 29% by weight to the target upper limit composition of 29% by weight - 2.0% by weight (target lower limit composition).

[0210] The "Target Upper Limit Composition: 29% by weight" is the maximum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0211] The "Target Lower Limit Composition: 29%-2.0% by weight" is the minimum acceptable range for the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, as required in the supplied container and / or equipment.

[0212] A method for filling a mixed refrigerant when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight. The method for filling a mixed refrigerant into a supply container and / or equipment, when the amount of mixed refrigerant to be filled into the supply container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant contains HFO-1132(E), HFO-1234yf, and HFC-32, and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 27% to 29% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is supplied from the supply container. When transferring and / or filling the container and / or equipment in liquid form, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container is kept within the range of 29% by weight (target upper limit composition) to 29% by weight - 2.0% by weight (target lower limit composition) of HFO-1132(E). This is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of the transfer to 28.8% by weight (minimum value) and 29% by weight (target upper limit composition).

[0213] By filling a mixed refrigerant according to the filling method of this disclosure, even if the amount of mixed refrigerant filled in the source container is 100% by weight of the maximum filling amount, by setting the liquid phase mixing ratio of HFO-1132(E) in the source container to a specific range before the transfer filling is performed, the composition change in the destination container and / or equipment can be kept within the range of a target upper limit composition of 29% by weight - 2.0% by weight (target lower limit composition) to a target upper limit composition of 29% by weight until the transfer filling is completed.

[0214] The liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.8% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29% by weight to 29% by weight.

[0215] 29% by weight is the target upper limit composition (by weight) for HFO-1132(E).

[0216] 28.8% by weight represents the minimum liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply container.

[0217] Charging method for each charge amount (when the charge amount of HFO-1234yf is fixed)

[13] Charging method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C is adopted as the charging constant and the calculated value is set as the charge amount of 100 wt%

[0218] (1) Method for filling a mixed refrigerant at a filling amount of 100% by weight of the maximum filling amount (Tables 38, 44, and 50) <Method for filling a mixed refrigerant at 65°C (100% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 100% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 41 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 41 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (41) (by weight %). 41 = -0.6a + 30.027 (41)

[0219] Equation (41) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 38 (filling amount 100wt%, 65℃, a=4), Table 44 (filling amount 100wt%, 65℃, a=3), and Table 50 (filling amount 100wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0220] (2) Method for filling a mixed refrigerant at a filling amount of 90% by weight of the maximum filling amount (Tables 39, 45, and 51) <Method for filling a mixed refrigerant at 65°C (filling amount of 90% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 90% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 42 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 42 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following equation (42) (by weight %). 42 = -0.545a + 29.735 (42)

[0221] Equation (42) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 39 (filling amount 90wt%, 65℃, a=4), Table 45 (filling amount 90wt%, 65℃, a=3), and Table 51 (filling amount 90wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0222] (3) Method for filling a mixed refrigerant at a filling amount of 80% by weight of the maximum filling amount (Tables 40, 46, and 52) <Method for filling a mixed refrigerant at 65°C (80% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 80% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 43 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 43 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (43) (by weight %). 43 = -0.54a + 29.637 (43)

[0223] Equation (43) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 40 (filling amount 80wt%, 65℃, a=4), 46 (filling amount 80wt%, 65℃, a=3), and 52 (filling amount 80wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0224] (4) Method for filling a mixed refrigerant at a filling amount of 70% by weight of the maximum filling amount (Tables 41, 47, and 53) <Method for filling a mixed refrigerant at 65°C (70% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 70% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 44 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 44 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (44) (by weight %). 44 = -0.54a + 29.553 (44)

[0225] Equation (44) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 41 (filling amount 70wt%, 65℃, a=4), 47 (filling amount 70wt%, 65℃, a=3), and 53 (filling amount 70wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0226] (5) Method for filling a mixed refrigerant in an amount of 60% by weight of the maximum filling amount (Tables 42, 48, and 54) <Method for filling a mixed refrigerant at 65°C (60% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 60% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 45 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 45 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (45) (by weight %). 45 = -0.535a + 29.435 (45)

[0227] Equation (45) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 42 (filling amount 60wt%, 65℃, a=4), Table 48 (filling amount 60wt%, 65℃, a=3), and Table 54 (filling amount 60wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0228] (6) Method for filling a mixed refrigerant in an amount of 50% by weight of the maximum filling amount (Tables 43, 49, and 55) <Method for filling a mixed refrigerant at 65°C (50% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 50% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 46 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 46 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (46) (by weight %). 46 = -0.48a + 29.15 (46)

[0229] Equation (46) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 43 (filling amount 50wt%, 65℃, a=4), Table 49 (filling amount 50wt%, 65℃, a=3), and Table 55 (filling amount 50wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0230] Charging method for each charge amount (when the charge amount of HFO-1234yf is fixed)

[14] Charging method for mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C is adopted as the charging constant and the calculated value is set as the charge amount of 100 wt%

[0231] (1) Method for filling a mixed refrigerant at a 100% by weight of the maximum filling amount (Tables 56, 62, and 68) <Method for filling a mixed refrigerant at 45°C (100% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 100% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 47 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 47: This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (47) (by weight %). 47 = -0.5a ​​+ 29.78 (47)

[0232] Equation (47) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 56 (filling amount 100wt%, 45℃, a=4), Table 62 (filling amount 100wt%, 45℃, a=3), and Table 68 (filling amount 100wt%, 45℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0233] (2) Method for filling a mixed refrigerant at a filling amount of 90% by weight of the maximum filling amount (Tables 57, 63, and 69) <Method for filling a mixed refrigerant at 45°C (filling amount of 90% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 90% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 48 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 48 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (48) (by weight %). 48 = -0.495a + 29.688 (48)

[0234] Equation (48) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 57 (filling amount 90wt%, 45℃, a=4), Table 63 (filling amount 90wt%, 45℃, a=3), and Table 69 (filling amount 90wt%, 45℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0235] (3) Method for filling a mixed refrigerant at a filling amount of 80% by weight of the maximum filling amount (Tables 58, 64, and 70) <Method for filling a mixed refrigerant at 45°C (80% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 80% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 49 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 49 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (49) (by weight %). 49 = -0.495a + 29.592 (49)

[0236] Equation (49) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 58 (filling amount 80wt%, 45℃, a=4), 64 (filling amount 80wt%, 45℃, a=3), and 70 (filling amount 80wt%, 45℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0237] (4) Method for filling a mixed refrigerant at a filling amount of 70% by weight of the maximum filling amount (Tables 59, 65, and 71) <Method for filling a mixed refrigerant at 45°C (70% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 70% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 50 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 50 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (50) (by weight %). 50 = -0.54a + 29.633 (50)

[0238] Equation (50) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 59 (filling amount 70wt%, 45℃, a=4), Table 65 (filling amount 70wt%, 45℃, a=3), and Table 71 (filling amount 70wt%, 45℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0239] (5) Method for filling a mixed refrigerant at a filling amount of 60% by weight of the maximum filling amount (Tables 60, 66, and 72) <Method for filling a mixed refrigerant at 45°C (60% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled at an amount of 60% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 51 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 51 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (51) (by weight %). 51 = -0.49a + 29.38 (51)

[0240] Equation (51) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 60 (filling amount 60wt%, 45℃, a=4), 66 (filling amount 60wt%, 45℃, a=3), and 72 (filling amount 60wt%, 45℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0241] (6) Method for filling a mixed refrigerant in an amount of 50% by weight of the maximum filling amount (Tables 61, 67, and 73) <Method for filling a mixed refrigerant at 45°C (50% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 50% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 52 A method for filling a mixed refrigerant so that the amount is between (minimum) and (28+a) (maximum) by weight. ±a: set tolerance (a≧0), preferably a=2 to 4. 52 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (52) (by weight %). 52 = -0.535a + 29.412 (52)

[0242] Equation (52) allows us to derive a straight line for fixed filling amounts of HFO-1234yf, based on the respective lower limit compositions of HFO-1132(E) in Tables 61 (filling amount 50 wt%, 45°C, a=4), 67 (filling amount 50 wt%, 45°C, a=3), and 73 (filling amount 50 wt%, 45°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0243] [5] When a third component is added to the mixed refrigerant, the mixed refrigerant of this disclosure is particularly intended for mixed refrigerants containing HFO-1132(E), HFO-1234yf, and HFC-32, in which HFO-1132(E) is present in an amount of 26% to 30% by weight.

[0244] The mixed refrigerant of this disclosure allows for the addition of other non-azeotropic compounds to improve the properties of the mixed refrigerant, which includes HFO-1132(E), HFO-1234yf, and HFC-32, to the extent that it does not significantly impair the composition variation of the mixed refrigerant, for the purpose of improving compatibility with refrigeration oil, suppressing flammability, reducing GWP, and improving refrigeration capacity.

[0245] In the mixed refrigerant of this disclosure, the amount of other non-azeotropic compounds added is preferably about 1% to 10% by weight relative to 100% by weight of the total mixed refrigerant.

[0246] Other non-azeotropic compounds that may be included in the mixed refrigerants of this disclosure are not particularly limited. The other non-azeotropic compounds are preferably HFCs such as HFC-125, HFC-152a, HFC-143a, HFOs such as HFO-1243zf, HFO-1225ye, isobutane, butane, propane, CO2, etc. These other non-azeotropic compounds may be used individually or in mixtures (blends) of two or more.

[0247] [6] Supply container The supply container is preferably a sealed container capable of storing the mixed refrigerant. The supply container is preferably a sealed container such as a service can, a 5L to 1,000L cylinder, an ISO container, a tanker, or a stationary storage tank.

[0248] When the supply container has a small capacity and the amount dispensed at one time is large, the mixed refrigerant is susceptible to changes in composition.

[0249] The filling method of this disclosure is valid even if the initial amount of mixed refrigerant in the supply container is 60% to 100% by weight of the maximum filling amount, and the transfer can be carried out in any number of steps until the transfer is complete, or even if the transfer is interrupted midway without transferring all of the liquid phase.

[0250] [7] The container at the supplier, and / or equipment, is preferably a sealed container capable of storing the mixed refrigerant supplied from the supplier container.

[0251] The containers to which the product is supplied are preferably sealed containers such as service cans, 5L to 1,000L cylinders, ISO containers, tanker trucks, and stationary storage tanks.

[0252] The equipment supplied is preferably heating and cooling equipment, freezers, refrigerators, hot water supply equipment, etc. The equipment supplied is preferably a device utilizing a vapor compression refrigeration cycle, and more preferably a refrigeration and air conditioning system, refrigerator, hot water supply equipment, etc.

[0253] A vapor compression refrigeration system manufactured using the filling method of this disclosure consists of a refrigerant and a refrigeration system body. There are no particular restrictions on the refrigeration system body, and any known refrigeration system body can be used as is.

[0254] [8] Means of transfer filling and application examples In the filling method disclosed herein, the means of transfer filling can be any conventional method, preferably one that utilizes a pressure difference, one that uses a pump, etc.

[0255] In Japan, the High Pressure Gas Safety Act prohibits the handling of containers at temperatures above 40°C; therefore, the handling temperature during transfer and filling is basically between 0°C and 40°C. International law also requires that handling at high temperatures be avoided.

[0256] The higher the temperature during transfer and filling (handling), the greater the change in composition due to the transfer and filling. By applying the transfer and filling conditions at a handling temperature of 40°C according to the filling method of this disclosure, it is also applicable to handling temperatures from 0°C to 40°C.

[0257] The following provides further details with reference to examples. However, this disclosure is not limited to these examples.

[0258] Reference Example (Table 1) A 10L sealed container (supply container) was filled with the maximum possible amount of trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32) at the composition immediately before transfer, so that the liquid phase would have a certain composition at 40°C, and the container was maintained at 40°C.

[0259] The maximum fillable capacity is determined by law and is calculated as follows: • G = V / C • G: Mass of fluorocarbon (kg) • V: Internal volume of the container (L) • C: Constant depending on the type of fluorocarbon

[0260] In Japan, the gas filling constant C is defined as the value obtained by dividing 1.05 by the specific gravity of the gas at 48°C.

[0261] The gas filling constant C is determined by international law when exporting, and when passing through tropical regions, it is set as 1.05 divided by the specific gravity of the gas at 65°C.

[0262] The gas filling constant C is determined by international law when exporting, and in non-tropical regions only, it is set as 1.05 divided by the specific gravity of the gas at 45°C.

[0263] In this study, we adopted a value obtained by dividing 1.05 by the specific gravity of the gas at 45°C or 65°C as the packing constant.

[0264] The reasons for selecting 40°C as the temperature during transfer and filling are as follows: • Japan's High Pressure Gas Safety Act prohibits handling containers at temperatures exceeding 40°C. • International laws also require avoiding handling at high temperatures. • Compositional changes become greater at higher temperatures. The data at 40°C is assumed to represent the worst-case scenario.

[0265] Next, a pump was used to gradually transfer the liquid from the liquid side to another empty container (the receiving container). A sample of the gas was taken from a sampling valve installed in the middle of the liquid side extraction pipe, and its component composition was analyzed using gas chromatography.

[0266] Table 1 shows the results of the compositional changes during transfer (HFC-32 fixed: 21.5% by weight) when the amount of difluoromethane (HFC-32) filled is fixed, calculated using a filling constant obtained by dividing 1.05 by the specific gravity of the gas at 45°C.

[0267] Table 1 shows that the concentration of HFO-1132(E) in the mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 at the completion of transfer and filling was lower than at the start of transfer and filling. This is because the boiling point of HFO-1132(E) (boiling point -52.5°C) is lower than that of HFO-1234yf (boiling point -29.4°C) or HFC-32 (boiling point -51.7°C). During transfer and filling, when the refrigerant is removed and the resulting space is filled by evaporation from the liquid phase, more HFO-1132(E) evaporates, causing the concentration of HFO-1132(E) in the liquid phase to decrease.

[0268] It was found that it is preferable to fill the supplier's container with more HFO-1132(E) than the target composition before transferring it.

[0269] Table 1 shows that for a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, if a target composition is set and the upper and lower composition range including that target is set to 2% to 4% by weight, and no measures are taken, and a composition within that composition range is used as the initial composition when transfer filling begins, there is a possibility that the composition of HFO-1132(E) at the time of completion of transfer filling (when the liquid disappears) may fall below the target lower limit composition.

[0270] If a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 is transferred without any precautions, the refrigerant capacity, such as refrigeration capacity and COP, that was expected with the target composition cannot be guaranteed from the start to the completion of the transfer.

[0271] When transferring a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32, we clarified what composition range the initial composition should be set within to ensure that the composition from the start of the transfer to the completion of the transfer falls entirely within the target lower and upper limits, given a target composition, a target upper limit, and a target lower limit.

[0272]

[0273] Filling method for each set tolerance: HFO-1132(E), HFO-1234yf, and HFC-32 were filled into a 10L sealed container (supply container) at the maximum possible filling amount (100% by weight) that could be filled with the original composition at 40°C, so that the liquid phase would have a certain composition at 40°C, and the container was maintained at 40°C.

[0274] The initial composition of the liquid phase of HFO-1132(E) before transfer was adjusted to reach the target upper limit composition. Next, as in the reference example, the liquid was gradually transferred from the liquid side to another empty container (the receiving container) using a pump, and the component composition was analyzed.

[0275] [A] When fixing the amount of HFC-32 to be filled: [A-1] A method of filling mixed refrigerant when the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C is adopted as the filling constant, and the calculated value is set to a filling amount of 100 wt%.

[0276] (1) Filling method when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight <Filling method for mixed refrigerant at 65°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> HFC-32 fixed: 23.5% by weight

[0277] (1-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 2 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0278]

[0279] As shown in Table 2, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.7% by weight (minimum value) and 30% by weight (target upper limit composition) in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.7% by weight.

[0280] (1-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 3 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0281]

[0282] As shown in Table 3, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 27.6% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.6% by weight.

[0283] (1-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 4 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0284]

[0285] As shown in Table 4, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.5% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.5% by weight.

[0286] (1-4) Initial filling amount in the supply container: Maximum filling amount 70% by weight. Table 5 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0287]

[0288] As shown in Table 5, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.4% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.4% by weight.

[0289] (1-5) Initial filling amount in the supply container: Maximum filling amount 60% by weight. Table 6 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0290]

[0291] As shown in Table 6, this disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container to between 27.3% by weight (minimum value) and 30% by weight (target upper limit composition) in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container is 27.3% by weight.

[0292] (1-6) Initial filling amount in the supply container: Maximum filling amount 50% by weight. Table 7 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0293]

[0294] As shown in Table 7, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.1% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.1% by weight.

[0295] (2) Filling method when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight <Filling method for mixed refrigerant at 65°C (range from upper limit (by weight) to (upper limit - 3.0) (by weight))> HFC-32 fixed: 23.0% by weight

[0296] (2-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 8 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0297]

[0298] As shown in Table 8, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of transfer and filling to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container is 28.2% by weight.

[0299] (2-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 9 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0300]

[0301] As shown in Table 9, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.1% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.1% by weight.

[0302] (2-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 10 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0303]

[0304] As shown in Table 10, this disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container to 28.0% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 28.0% by weight.

[0305] (2-4) Initial filling amount in the supply container: 70% by weight of the maximum filling amount. Table 11 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0306]

[0307] As shown in Table 11, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 27.9% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.9% by weight.

[0308] (2-5) Initial filling amount in the supply container: 60% by weight of the maximum filling amount. Table 12 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0309]

[0310] As shown in Table 12, this disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container to 27.8% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container is 27.8% by weight.

[0311] (2-6) Initial filling amount in the supply container: 50% by weight of the maximum filling amount. Table 13 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0312]

[0313] As shown in Table 13, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container before the start of transfer and filling to 27.7% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container is 27.7% by weight.

[0314] (3) Filling method when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight <Filling method for mixed refrigerant at 65°C (range from upper limit (by weight) to (upper limit - 2.0) (by weight))> HFC-32 fixed: 22.5% by weight

[0315] (3-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 14 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0316]

[0317] As shown in Table 14, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container before the start of transfer and filling to 28.7% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 28.7% by weight.

[0318] (3-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 15 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0319]

[0320] As shown in Table 15, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.6% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.6% by weight.

[0321] (3-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 16 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0322]

[0323] As shown in Table 16, this disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container to 28.6% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight (target lower limit composition) to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 28.6% by weight.

[0324] (3-4) Initial filling amount in the supply container: 70% by weight of the maximum filling amount. Table 17 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0325]

[0326] As shown in Table 17, this disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container to 28.4% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight (target lower limit composition) to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container is 28.4% by weight.

[0327] (3-5) Initial filling amount in the supply container: 60% by weight of the maximum filling amount. Table 18 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0328]

[0329] As shown in Table 18, this disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container to 28.3% by weight (minimum value) or 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight (target lower limit composition) to 29.0% by weight before the start of transfer filling. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 28.3% by weight.

[0330] (3-6) Initial filling amount in the supply container: 50% by weight of the maximum filling amount. Table 19 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0331]

[0332] As shown in Table 19, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.2% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.2% by weight.

[0333] [A-2] A method for filling mixed refrigerant when the filling amount is set to 100 wt%, using the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C as the filling constant.

[0334] (1) Filling method when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight <Filling method for mixed refrigerant at 45°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> HFC-32 fixed: 23.5% by weight

[0335] (1-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 20 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0336]

[0337] As shown in Table 20, this disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container to between 27.8% by weight (minimum value) and 30% by weight (target upper limit composition) in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container is 27.8% by weight.

[0338] (1-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 21 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0339]

[0340] As shown in Table 21, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to between 27.7% by weight (minimum value) and 30% by weight (target upper limit composition) in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.7% by weight.

[0341] (1-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 22 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0342]

[0343] As shown in Table 22, this disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container to between 27.6% by weight (minimum value) and 30% by weight (target upper limit composition) in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 27.6% by weight.

[0344] (1-4) Initial filling amount in the supply container: 70% by weight of the maximum filling amount. Table 23 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0345]

[0346] As shown in Table 23, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.5% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.5% by weight.

[0347] (1-5) Initial filling amount in the supply container: Maximum filling amount 60% by weight. Table 24 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0348]

[0349] As shown in Table 24, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 27.4% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.4% by weight.

[0350] (1-6) Initial filling amount in the supply container: Maximum filling amount 50% by weight. Table 25 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0351]

[0352] As shown in Table 25, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container before the start of transfer and filling to 27.3% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 27.3% by weight.

[0353] (2) Filling method when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight <Filling method for mixed refrigerant at 45°C (range from upper limit (by weight) to (upper limit - 3.0) (by weight))> HFC-32 fixed: 23.0% by weight

[0354] (2-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 26 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0355]

[0356] As shown in Table 26, this disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container to 28.3% by weight (minimum value) or 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 28.3% by weight.

[0357] (2-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 27 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0358]

[0359] As shown in Table 27, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.2% by weight.

[0360] (2-3) Initial filling amount in the supply source container: 80% by weight of the maximum filling amount. Table 28 shows the results of the composition change during transfer filling when the initial composition in the liquid phase of HFO-1132(E) is adjusted to the target upper limit composition.

[0361]

[0362] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply source container As shown in Table 28, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight of the target upper limit composition, the liquid phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container before the start of transfer filling is characterized by being 28.1% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less. The target upper limit composition (weight%) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container is 28.1% by weight.

[0363] (2-4) Initial filling amount in the supply source container: 70% by weight of the maximum filling amount. Table 29 shows the results of the composition change during transfer filling when the initial composition in the liquid phase of HFO-1132(E) is adjusted to the target upper limit composition.

[0364]

[0365] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply source container As shown in Table 29, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight of the target upper limit composition, the liquid phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container before the start of transfer filling is characterized by being 28.0% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less. The target upper limit composition (weight%) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container is 28.0% by weight.

[0366] (2-5) Initial filling amount in the supply source container: 60% by weight of the maximum filling amount Table 30 shows the results of the composition change during transfer filling when the initial composition in the liquid phase of HFO-1132(E) is adjusted to the target upper limit composition.

[0367]

[0368] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply source container As shown in Table 30, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight of the target upper limit composition, the liquid phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container before the start of transfer filling is characterized by being 27.9% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less. The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container is 27.9% by weight.

[0369] (2-6) Initial filling amount in the supply source container: 50% by weight of the maximum filling amount Table 31 shows the results of the composition change during transfer filling when the initial composition in the liquid phase of HFO-1132(E) is adjusted to the target upper limit composition.

[0370]

[0371] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply source container As shown in Table 31, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight of the target upper limit composition, the liquid phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container before the start of transfer filling is characterized by being 27.8% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less. The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container is 27.8% by weight.

[0372] (3) Filling method when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight <Filling method for mixed refrigerant at 45°C (range from upper limit (by weight) to (upper limit - 2.0) (by weight))> HFC-32 fixed: 22.5% by weight

[0373] (3-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 32 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0374]

[0375] As shown in Table 32, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.8% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.8% by weight.

[0376] (3-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 33 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0377]

[0378] As shown in Table 33, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.7% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.7% by weight.

[0379] (3-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 34 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0380]

[0381] As shown in Table 34, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container before the start of transfer and filling to 28.6% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 28.6% by weight.

[0382] (3-4) Initial filling amount in the supply container: 70% by weight of the maximum filling amount. Table 35 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0383]

[0384] As shown in Table 35, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container before the start of transfer and filling to 28.5% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 28.5% by weight.

[0385] (3-5) Initial filling amount in the supply container: 60% by weight of the maximum filling amount. Table 36 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0386]

[0387] As shown in Table 36, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container before the start of transfer and filling to 28.4% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 28.4% by weight.

[0388] (3-6) Initial filling amount in the supply container: 50% by weight of the maximum filling amount. Table 37 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0389]

[0390] As shown in Table 37 for the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant within the supply source container, in order to keep the present disclosure within the range from the target upper limit composition of 29.0 wt% - 2.0 wt% (target lower limit composition) to the target upper limit composition of 30 wt% of HFO-1132(E), the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply source container before the start of transfer filling is made to be 28.3 wt% (minimum value) or more and 29.0 wt% (target upper limit composition) or less. The target upper limit composition (wt%) of HFO-1132(E) is 29.0 wt%. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant within the supply source container is 28.3 wt%.

[0391] [B] When fixing the filling amount of R1234yf [B-1] The value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C is adopted as the filling constant, and the calculated value is used as the filling amount of the mixed refrigerant when it is 100 wt%.

[0392] (1) Filling method when the difference between the target upper limit composition and the target lower limit composition is 4.0 wt% <Filling method of the mixed refrigerant at 65°C (range from the upper limit (wt%) to (upper limit - 4.0)(wt%))> R1234yf fixed: 52.5 wt%

[0393] (1-1) Initial filling amount in the supply source container: 100 wt% of the maximum filling amount Table 38 shows the results of composition changes during transfer filling when the initial composition in the liquid phase of HFO-1132(E) is adjusted to the target upper limit composition.

[0394]

[0395] As shown in Table 38, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.7% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.7% by weight.

[0396] (1-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 39 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0397]

[0398] As shown in Table 39, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.6% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.6% by weight.

[0399] (1-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 40 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0400]

[0401] As shown in Table 40, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 27.5% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.5% by weight.

[0402] (1-4) Initial filling amount in the supply container: 70% by weight of the maximum filling amount. Table 41 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0403]

[0404] As shown in Table 41, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.4% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.4% by weight.

[0405] (1-5) Initial filling amount in the supply container: 60% by weight of the maximum filling amount. Table 42 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0406]

[0407] As shown in Table 42, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.3% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.3% by weight.

[0408] (1-6) Initial filling amount in the supply container: 50% by weight of the maximum filling amount. Table 43 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0409]

[0410] As shown in Table 43, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.3% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.3% by weight.

[0411] (2) Filling method when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight <Filling method for mixed refrigerant at 65°C (range from upper limit (by weight) to (upper limit - 3.0) (by weight))> R1234yf fixed: 52.0% by weight

[0412] (2-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 44 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0413]

[0414] As shown in Table 44, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.2% by weight.

[0415] (2-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 45 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0416]

[0417] As shown in Table 45, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.1% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.1% by weight.

[0418] (2-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 46 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0419]

[0420] As shown in Table 46, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.1% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.1% by weight.

[0421] (2-4) Initial filling amount in the supply container: 70% by weight of the maximum filling amount. Table 47 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0422]

[0423] As shown in Table 47, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 27.9% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.9% by weight.

[0424] (2-5) Initial filling amount in the supply container: 60% by weight of the maximum filling amount. Table 48 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0425]

[0426] As shown in Table 48, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.8% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.8% by weight.

[0427] (2-6) Initial filling amount in the supply container: 50% by weight of the maximum filling amount. Table 49 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0428]

[0429] As shown in Table 49, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 27.7% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight to 3.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.7% by weight.

[0430] (3) Filling method when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight <Filling method for mixed refrigerant at 65°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> R1234yf fixed: 51.5% by weight

[0431] (3-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 50 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0432]

[0433] As shown in Table 50, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.7% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.7% by weight.

[0434] (3-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 51 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0435]

[0436] As shown in Table 51, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.7% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.7% by weight.

[0437] (3-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 52 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0438]

[0439] As shown in Table 52, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.5% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.5% by weight.

[0440] (3-4) Initial filling amount in the supply container: 70% by weight of the maximum filling amount. Table 53 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0441]

[0442] As shown in Table 53, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.5% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.5% by weight.

[0443] (3-5) Initial filling amount in the supply container: 60% by weight of the maximum filling amount. Table 54 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0444]

[0445] As shown in Table 54, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.4% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.4% by weight.

[0446] (3-6) Initial filling amount in the supply container: 50% by weight of the maximum filling amount. Table 55 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0447]

[0448] As shown in Table 55, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.2% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight to 29.0% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.2% by weight.

[0449] [B-2] A method for filling mixed refrigerant when the filling amount is set to 100 wt%, using the value obtained by dividing 1.05 by the specific gravity of the gas (mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C as the filling constant.

[0450] (1) Filling method when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight <Filling method for mixed refrigerant at 45°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> R1234yf fixed: 52.5% by weight

[0451] (1-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 56 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0452]

[0453] As shown in Table 56, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.8% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.8% by weight.

[0454] (1-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 57 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0455]

[0456] As shown in Table 57, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to between 27.7% by weight (minimum value) and 30% by weight (target upper limit composition) in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.7% by weight.

[0457] (1-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 58 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0458]

[0459] As shown in Table 58, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.6% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.6% by weight.

[0460] (1-4) Initial filling amount in the supply container: 70% by weight of the maximum filling amount. Table 59 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0461]

[0462] As shown in Table 59, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.5% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.5% by weight.

[0463] (1-5) Initial filling amount in the supply container: 60% by weight of the maximum filling amount. Table 60 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0464]

[0465] As shown in Table 60, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 27.4% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.4% by weight.

[0466] (1-6) Initial filling amount in the supply container: 50% by weight of the maximum filling amount. Table 61 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0467]

[0468] As shown in Table 61, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.3% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 30% by weight to 4.0% by weight (target lower limit composition). The target upper limit composition (by weight) of HFO-1132(E) is 30% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.3% by weight.

[0469] (2) Filling method when the difference between the target upper limit composition and the target lower limit composition is 3.0% by weight <Filling method for mixed refrigerant at 45°C (range from upper limit (by weight) to (upper limit - 3.0) (by weight))> R1234yf fixed: 52.0% by weight

[0470] (2-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 62 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0471]

[0472] As shown in Table 62, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.3% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.3% by weight. (2-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 63 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0473]

[0474] As shown in Table 63, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.2% by weight. (2-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 64 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0475]

[0476] As shown in Table 64, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.1% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.1% by weight. (2-4) Initial filling amount in the supply container: 70% by weight of the maximum filling amount. Table 65 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0477]

[0478] As shown in Table 65, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supplier container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container before the start of transfer and filling to 28.0% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supplier container is 28.0% by weight. (2-5) Initial filling amount in the supply container: 60% by weight of the maximum filling amount. Table 66 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0479]

[0480] As shown in Table 66, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.9% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.9% by weight. (2-6) Initial filling amount in the supply container: 50% by weight of the maximum filling amount. Table 67 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0481]

[0482] As shown in Table 67, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 27.8% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.5% by weight - 3.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.5% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 27.8% by weight.

[0483] (3) Filling method when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight <Filling method for mixed refrigerant at 45°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> R1234yf fixed: 51.5% by weight

[0484] (3-1) Initial filling amount in the supply container: 100% by weight of the maximum filling amount. Table 68 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0485]

[0486] As shown in Table 68, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.8% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.8% by weight.

[0487] (3-2) Initial filling amount in the supply container: 90% by weight of the maximum filling amount. Table 69 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0488]

[0489] As shown in Table 69, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.7% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.7% by weight.

[0490] (3-3) Initial filling amount in the supply container: 80% by weight of the maximum filling amount. Table 70 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0491]

[0492] As shown in Table 70, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer filling to 28.6% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.6% by weight.

[0493] (3-4) Initial filling amount in the supply container: 70% by weight of the maximum filling amount. Table 71 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0494]

[0495] As shown in Table 71, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.6% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.6% by weight.

[0496] (3-5) Initial filling amount in the supply container: 60% by weight of the maximum filling amount. Table 72 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0497]

[0498] As shown in Table 72, this disclosure is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container to 28.4% by weight (minimum value) or 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container is 28.4% by weight.

[0499] (3-6) Initial filling amount in the supply container: 50% by weight of the maximum filling amount. Table 73 shows the results of compositional changes during transfer filling when the initial composition of the liquid phase of HFO-1132(E) is prepared to the target upper limit composition.

[0500]

[0501] As shown in Table 73, the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container is characterized by setting the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container before the start of transfer and filling to 28.4% by weight (minimum value) or more and 29.0% by weight (target upper limit composition) or less, in order to keep the target upper limit composition of HFO-1132(E) within the range of 29.0% by weight - 2.0% by weight (target lower limit composition) to 30% by weight. The target upper limit composition (by weight) of HFO-1132(E) is 29.0% by weight. The minimum value of the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply container is 28.4% by weight.

[0502] [C] Discussion: When using the method disclosed herein, when filling with a non-azeotropic mixed refrigerant, the compositional changes associated with the transfer can be kept within a certain range relative to the target composition from before the transfer to the completion of the transfer, compared to when the transfer is carried out without any countermeasures, and the entire amount of the liquid phase can be used.

[0503] The method of this disclosure makes it possible to keep the compositional changes that occur during the transfer and refilling of a mixed refrigerant containing non-azeotropic HFO-1132(E), HFO-1234yf, and HFC-32 used as a working fluid for a vapor compression refrigeration cycle within a range that does not impair the refrigerant capacity.

Claims

1. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment, in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container within the range of a target upper limit composition of 30% by weight to a target upper limit composition of 30% by weight - 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start of transfer to the completion of transfer, A method for filling a mixed refrigerant, wherein, before the start of transfer filling, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container is set to 27.7% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

2. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a ratio of 26.5% to 29.5% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment. A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the source container from the start of transfer filling to the range of the target upper limit composition of HFO-1132(E) of 29.5% by weight to the target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition), the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the source container before the start of transfer filling is set to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

3. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 27% to 29% relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment, in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container within the range of a target upper limit composition of HFO-1132(E) of 29% to a target upper limit composition of 29% to 2.0% by weight (target lower limit composition), from the start of transfer to the completion of transfer. A method for filling a mixed refrigerant, wherein, before the start of transfer filling, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container is set to 28.7% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

4. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 26% to 30% by weight relative to a total of 100% by weight of the HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment, in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container within the range of a target upper limit composition of 30% by weight to a target upper limit composition of 30% by weight - 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start of transfer to the completion of transfer, A method for filling a mixed refrigerant, wherein, before the start of transfer filling, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container is set to 27.8% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

5. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a ratio of 26.5% to 29.5% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment. A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of the target upper limit composition of HFO-1132(E) from 29.5% by weight to 29.5% by weight - 3.0% by weight (target lower limit composition) of the HFO-1132(E) from the start of the transfer to completion of the transfer, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 28.3% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

6. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 27% to 29% relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment, in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container within the range of a target upper limit composition of HFO-1132(E) of 29% to a target upper limit composition of 29% to 2.0% by weight (target lower limit composition), from the start of transfer to the completion of transfer. A method for filling a mixed refrigerant, wherein, before the start of transfer filling, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container is set to 28.8% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

7. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled to an amount of 100% by weight or less of the maximum filling amount, to a destination container and / or equipment, in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container within ±a% by weight of the target composition of HFO-1132(E) (28% by weight) from the start to the completion of the transfer, The liquid-phase mixing ratio (initial composition) of the HFO-1132(E) of the mixed refrigerant in the supply container immediately before transfer filling is (y 11 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 11 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (11) (by weight %). 11 = -0.6a+30.027 (11) 8. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled to an amount of 90% by weight or less of the maximum filling amount in the supply container, to a destination container and / or equipment, in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container within ±a% by weight of the target composition of HFO-1132(E) (28% by weight) from the start to the completion of the transfer, The liquid-phase mixing ratio (initial composition) of the HFO-1132(E) of the mixed refrigerant in the supply container immediately before transfer filling is (y 12 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 12 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (12) (by weight %). 12 = -0.5a ​​+ 29.57 (12) 9. A method for filling a mixed refrigerant, wherein the mixed refrigerant contains trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and when liquid-transferring the mixed refrigerant in a liquid phase, which contains HFO-1132(E) in an amount of 26% to 30% by weight based on the total 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply source container filled with the mixed refrigerant in an amount of 80% by weight or less of the maximum filling amount to a supply destination container and / or equipment, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply source container within the range of ±a% by weight of the target composition (28% by weight) of HFO-1132(E) from the start to the completion of the transfer filling, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container immediately before the transfer filling is made to be (y 13 )% by weight (minimum value) or more and (28 + a)% by weight (maximum value) or less. ±a: Set tolerance (a ≧ 0) y 13 : The minimum value in the initial composition of HFO-1132(E), which is a value represented by the following formula (13) (% by weight). y 13 = -0.545a + 29.622 (13) 10. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 70% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 14 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 14 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (14) (by weight %). 14 = -0.495a + 29.392 (14) 11. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 60% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 15 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 15 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (15) (by weight %). 15 = -0.495a + 29.292 (15) 12. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 50% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 16 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 16 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (16) (by weight %). 16 = -0.545a + 29.328 (16) 13. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 100% or less of the maximum filling capacity, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 17 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 17 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (17) (by weight %). 17 = -0.5a ​​+ 29.78 (17) 14. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled to a supply container and / or equipment at a rate of 90% or less of the maximum filling amount, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 18 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 18 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (18) (by weight %). 18 = -0.5a ​​+ 29.7 (18) 15. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 80% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 19 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 19 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (19) (by weight %). 19 = -0.5a ​​+ 29.61 (19) 16. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled to a supply container and / or equipment at a rate of 70% or less of the maximum filling capacity, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 20 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 20 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (20) (by weight %). 20 = -0.495a + 29.468 (20) 17. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 60% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 21 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 21 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (21) (by weight %). 21 = -0.5a ​​+ 29.42 (21) 18. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 50% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 22 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 22 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following equation (22) (by weight %). 22 = -0.495a + 29.268 (22) 19. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a ratio of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment. A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of 30% by weight to 4.0% by weight (target lower limit composition) of the target upper limit composition of the HFO-1132(E) from the start of the transfer to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 27.7% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

20. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a ratio of 26.5% to 29.5% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment. A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the source container from the start of transfer filling to the range of the target upper limit composition of HFO-1132(E) of 29.5% by weight to the target upper limit composition of 29.5% by weight - 3.0% by weight (target lower limit composition), the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the source container before the start of transfer filling is set to 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

21. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in the liquid phase at an amount of 27% to 29% relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment, in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container within the range of a target upper limit composition of HFO-1132(E) of 29% to a target lower limit composition of 29% to 2.0% (target lower limit composition), from the start of transfer to the completion of transfer. A method for filling a mixed refrigerant, wherein, before the start of transfer filling, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container is set to 28.7% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

22. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a ratio of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment. A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of 30% by weight to 4.0% by weight (target lower limit composition) of the target upper limit composition of the HFO-1132(E) from the start of the transfer to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 27.8% by weight (minimum value) or more and 30% by weight (target upper limit composition) or less.

23. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a ratio of 26.5% to 29.5% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a destination container and / or equipment. A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of the target upper limit composition of HFO-1132(E) from 29.5% by weight to 29.5% by weight - 3.0% by weight (target lower limit composition) of the HFO-1132(E) from the start of the transfer to completion of the transfer, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 28.3% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

24. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is 27% to 29% by weight in the liquid phase relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container to a supply container and / or equipment. A method for filling a mixed refrigerant, wherein, in order to keep the liquid-phase mixing ratio of the HFO-1132(E) in the mixed refrigerant in the supply container within the range of the target upper limit composition of HFO-1132(E) from 29% by weight to 29% by weight - 2.0% by weight (target lower limit composition) of the mixed refrigerant, the liquid-phase mixing ratio (initial composition) of the HFO-1132(E) in the mixed refrigerant in the supply container before the start of the transfer is set to 28.8% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

25. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% by weight relative to 100% by weight of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 100% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 41 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 41 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (41) (by weight %). 41 = -0.6a + 30.027 (41) 26. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled to an amount of 90% by weight or less of the maximum filling amount in the supply container, to a destination container and / or equipment, in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container within ±a% by weight of the target composition of HFO-1132(E) (28% by weight) from the start to the completion of the transfer, The liquid-phase mixing ratio (initial composition) of the HFO-1132(E) of the mixed refrigerant in the supply container immediately before transfer filling is (y 42 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 42 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (42) (by weight %). 42 = -0.545a + 29.735 (42) 27. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 80% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 43 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 43 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (43) (by weight %). 43 = -0.54a + 29.637 (43) 28. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 70% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 44 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 44 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (44) (by weight %). 44 = -0.54a + 29.553 (44) 29. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 60% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 45 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 45 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (45) (by weight %). 45 = -0.535a + 29.435 (45) 30. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 50% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 46 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 46 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (46) (by weight %). 46 = -0.48a + 29.15 (46) 31. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 100% or less of the maximum filling capacity, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 47 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 47 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (47) (by weight %). 47 = -0.5a ​​+ 29.78 (47) 32. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled to a supply container and / or equipment at a rate of 90% or less of the maximum filling amount, In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 48 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 48 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (48) (by weight %). 48 = -0.495a + 29.688 (48) 33. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 80% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 49 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 49 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (49) (by weight %). 49 = -0.495a + 29.592 (49) 34. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% by weight relative to 100% by weight of the total of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 70% by weight or less of the maximum filling amount, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 50 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 50 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (50) (by weight %). 50 = -0.54a + 29.633 (50) 35. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 60% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 51 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 51 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (51) (by weight %). 51 = -0.49a + 29.38 (51) 36. A method for filling a mixed refrigerant, wherein the mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), and the mixed refrigerant, in which the amount of HFO-1132(E) is present in the liquid phase at a rate of 26% to 30% of the total amount of HFO-1132(E), HFO-1234yf, and HFC-32, is transferred in liquid form from a supply container, which is filled in an amount of 50% or less of the maximum filling capacity of the supply container, to a destination container and / or equipment. In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within ±a wt% of the target composition (28 wt%) of HFO-1132(E) from the start to the completion of the transfer, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the source container immediately before the transfer is set to (y 52 A method for filling a mixed refrigerant so that the concentration is between (minimum) and (28+a) (maximum) by weight. ±a: Set tolerance (a≧0) y 52 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (52) (by weight %). 52 = -0.535a + 29.412 (52)

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