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

Abstract

The objective is to provide a method for filling mixed refrigerants that can keep the compositional changes during transfer of non-azeotropic mixed refrigerants, including HFO-1132(E), HFO-1234yf, and HFC-32, within the acceptable range of refrigerant performance. [Solution] A method for filling a mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32.

Description

[Technical Field]

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

[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). [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2010-047754 [Patent Document 2] Special Publication No. 2011-522947 [Patent Document 3] Special Publication No. 2011-525204 [Patent Document 4] Japanese Patent Application Publication No. 10-197108 [Patent Document 5] Restated WO96 / 33377 [Patent Document 6] Japanese Patent Publication No. 2015-168696 [Patent Document 7] Re-tabled WO2014 / 038604 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] The present disclosure aims to provide a method for filling a mixed refrigerant that can keep the compositional changes during the 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. [Means for solving the problem]

[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 by setting the liquid phase mixing ratio of each refrigerant in the source container before filling a mixed refrigerant (liquid phase) containing non-azeotropic refrigerants HFO-1132(E), HFO-1234yf, and HFC-32 from the source container to the destination container and / or equipment.

[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] According to 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 container to a destination container and / or equipment, a smaller initial filling volume in the supplier 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 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: The amount of filling was calculated using the value obtained by dividing 1.05 by the specific gravity of the gas at 45°C. The amount of filling was calculated using the value obtained by dividing >1.05 by the specific gravity of the gas at 48°C. The amount of filling was calculated using the value obtained by dividing >1.05 by the specific gravity of the gas at 65°C.

[0018] This disclosure describes a method for filling a mixed refrigerant, in which the value obtained by dividing [1][3]1.05 by the specific gravity of the gas (a 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 to a filling amount of 100 wt%.

[0019] This disclosure provides a method for filling a mixed refrigerant, in which the value obtained by dividing [2][4]1.05 by the specific gravity of the gas (a 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 to a filling amount of 100 wt%.

[0020] This disclosure provides the following aspects:

[0021] Filling method for each set tolerance (when fixing the amount of HFC-32 to be filled) [1] 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 including HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C as the filling constant. <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> Section 1. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the HFC-32 is present in an amount of 21.4% by weight and the HFO-1132(E) is present in an amount of 26% to 30% by weight, from a supply container to a destination container and / or equipment, with a total weight of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32, in the liquid phase, 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 30% by weight (target upper limit composition) to 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start of transfer to 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.

[0022] <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> Section 2. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the HFC-32 is present in an amount of 21.4% by weight and the HFO-1132(E) is present in an amount of 26.5% to 29.5% by weight, from a supply container to a destination container and / or equipment, in liquid form, 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 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), 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 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0023] <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> Section 3. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the HFC-32 is present in an amount of 21.4% by weight and the HFO-1132(E) is present in an amount of 27% to 29% by weight, from a supply container to a destination container and / or equipment, in liquid form, 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 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), 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.

[0024] Filling method for each set tolerance (when fixing the amount of HFC-32 to be filled) [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 including HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C as the filling constant. <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> Section 4. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the HFC-32 is present in an amount of 21.5% by weight and the HFO-1132(E) is present in an amount of 26% to 30% by weight, from a supply container to a destination container and / or equipment, in liquid form, 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 30% by weight (target upper limit composition) to 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start of transfer to 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) of 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.

[0025] <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> Section 5. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the HFC-32 is present in an amount of 21.5% by weight and the HFO-1132(E) is present in an amount of 26.5% to 29.5% by weight, from a supply container to a destination container and / or equipment, in liquid form, 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 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), 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) of the mixed refrigerant in the supply container 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 refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> Section 6. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the HFC-32 is present in an amount of 21.5% by weight and the HFO-1132(E) is present in an amount of 27% to 29% by weight, from a supply container to a destination container and / or equipment, with a total weight of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32, in the liquid phase, 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 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), 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.

[0027] Filling method for each filling volume (when fixing the filling volume of HFC-32) [3] 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 including HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C as the filling constant. <Method for filling a mixed refrigerant with a filling amount of 100% by weight of the maximum filling amount at 65℃> Section 11. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, 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, from a supply container filled to a destination container and / or equipment at an amount of 100% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 11 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (11) (weight %). y 11 = -0.6a+30.027 (11)

[0028] <Method for filling a mixed refrigerant with a filling volume of 90% by weight of the maximum filling volume at 65°C> Section 12. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, 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, from a supply container filled to a destination container and / or equipment at an amount of 90% by weight or less of the maximum filling capacity of the supply container, in liquid form: 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 amount is between (minimum)% by weight and (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) (weight %). y 12 = -0.5a ​​+ 29.57 (12)

[0029] <Method for filling a mixed refrigerant with a filling volume of 80% by weight of the maximum filling volume at 65°C> Section 13. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, the HFC-32 is present in the liquid phase at an amount of 21.2% by weight and the HFO-1132(E) is present at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 80% by weight or less of the maximum filling capacity of the supply container, in liquid form: In order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the container of the source 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 container of the source immediately before the transfer filling is set to be not less than (y 13 )% by weight (minimum value) and not more than (28 + a)% by weight (maximum value). A method for filling a mixed refrigerant. ±a: Set tolerance (a ≥ 0) y 13 : The minimum value in the initial composition of HFO-1132(E), which is the value represented by the following formula (13) (% by weight). y 13 = -0.545a + 29.622 (13)

[0030] <Method for filling a mixed refrigerant at 70% by weight of the maximum filling amount at 65°C> Item 14. A method for filling a mixed refrigerant, The mixed refrigerant contains trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), When liquid-transfer filling from a source container filled with a mixed refrigerant in an amount not exceeding 70% by weight of the maximum filling amount, in which, in the liquid phase, 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, with respect to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, 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 container of the source 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 container of the source immediately before the transfer filling is set to be (y 14A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 14 = -0.495a + 29.392 (14)

[0031] <Method for filling a mixed refrigerant with a filling volume of 60% by weight of the maximum filling volume at 65°C> Section 15. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the liquid phase contains 20.8% by weight of HFC-32 and 26% to 30% by weight of HFO-1132(E), from a supply container filled to a destination container and / or equipment at a rate of 60% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 15 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 15 = -0.495a + 29.292 (15)

[0032] <Method for filling a mixed refrigerant with a filling amount of 50% by weight of the maximum filling amount at 65°C> Section 16. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the liquid phase contains 20.6% by weight of HFC-32 and 26% to 30% by weight of HFO-1132(E), from a supply container filled to a destination container and / or equipment at a rate of 50% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 16 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 16 = -0.545a + 29.328 (16)

[0033] Filling method for each filling volume (when fixing the filling volume of HFC-32) [4] 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 including HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C as the filling constant. <Method for filling a mixed refrigerant with a filling amount of 100% by weight of the maximum filling amount at 45℃> Section 17. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the liquid phase contains 21.5% by weight of HFC-32 and 26% to 30% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 100% by weight 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 supply container within ±a% by weight of the target composition (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 17 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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 %). y 17 = -0.5a ​​+ 29.78 (17)

[0034] <Method for filling a mixed refrigerant with a filling volume of 90% by weight of the maximum filling volume at 45°C> Section 18. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, 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, from a supply container filled to a destination container and / or equipment at an amount of 90% by weight or less of the maximum filling capacity of the supply container, in liquid form: 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 18 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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 %). y 18 = -0.5a ​​+ 29.7 (18)

[0035] <Method for filling a mixed refrigerant with a filling volume of 80% by weight of the maximum filling volume at 45°C> Section 19. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the HFC-32 is present in an amount of 21.3% by weight and the HFO-1132(E) is present in an amount of 26% to 30% by weight relative to a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32 in the liquid phase, from a supply container filled to a destination container and / or equipment in liquid form, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 19 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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 %). y 19 = -0.5a ​​+ 29.61 (19)

[0036] <Method for filling a mixed refrigerant with a filling volume of 70% by weight of the maximum filling volume at 45°C> Section 20. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which 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 relative to a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32 in the liquid phase, from a supply container filled to a destination container and / or equipment in liquid form, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 20A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 20 = -0.495a + 29.468 (20)

[0037] <Method for filling a mixed refrigerant with a filling volume of 60% by weight of the maximum filling volume at 45°C> Section 21. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which the HFC-32 is present in an amount of 21.0% by weight and the HFO-1132(E) is present in an amount of 26% to 30% by weight relative to a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32 in the liquid phase, from a supply container filled to a destination container and / or equipment in liquid form, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 21 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 21 = -0.5a ​​+ 29.42 (21)

[0038] <Method for filling a mixed refrigerant with a filling amount of 50% by weight of the maximum filling amount at 45°C> Section 22. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, the HFC-32 is present in the liquid phase at an amount of 20.8% by weight and the HFO-1132(E) is present at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 50% by weight or less of the maximum filling capacity of the supply container, in liquid form: 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 22 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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 formula (22) (weight %). y 22 = -0.495a + 29.268 (22)

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

[11] A method for filling mixed refrigerant when the filling amount is 100 wt%, using a 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 as the filling constant and calculating the value. <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> Section 31. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 50.8% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container to a destination container and / or equipment, in liquid form, 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 30% by weight (target upper limit composition) to 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start of transfer to 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.

[0040] <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> Section 32. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in liquid form, from a supply container to a destination container and / or equipment, a mixture of HFO-1234yf and HFO-1132(E) in a total of 100% by weight, where HFO-1234yf is present in the liquid phase at an amount of 50.8% by weight and HFO-1132(E) at an amount of 26.5% to 29.5% by weight, 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 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), 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 28.2% by weight (minimum value) or more and 29.5% by weight (target upper limit composition) or less.

[0041] <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> Section 33. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 50.8% by weight and HFO-1132(E) at an amount of 27% to 29% by weight, from a supply container to a destination container and / or equipment, in liquid form, 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 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), 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.

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

[12] 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 including HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C as the filling constant. <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> Section 34. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 50.5% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container to a destination container and / or equipment, in liquid form, 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 30% by weight (target upper limit composition) to 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start of transfer to 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) of 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.

[0043] <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> Section 35. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in liquid form, from a supply container to a destination container and / or equipment, a mixture of HFO-1234yf and HFO-1132(E) in a total of 100% by weight, where HFO-1234yf is present in the liquid phase at an amount of 50.5% by weight and HFO-1132(E) at an amount of 26.5% to 29.5% by weight, 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 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), 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) of the mixed refrigerant in the supply container 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 refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> Section 36. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 50.5% by weight and HFO-1132(E) at an amount of 27% to 29% by weight, from a supply container to a destination container and / or equipment, in liquid form, 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 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), 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.

[0045] Filling method for each filling volume (when fixing the filling volume of HFO-1234yf)

[13] 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 65°C as the filling constant. <Method for filling a mixed refrigerant with a filling amount of 100% by weight of the maximum filling amount at 65℃> Section 41. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 50.8% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 100% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 41 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 41 = -0.6a + 30.027 (41)

[0046] <Method for filling a mixed refrigerant with a filling volume of 90% by weight of the maximum filling volume at 65°C> Section 42. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 51.0% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 90% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 amount is between (minimum)% by weight and (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) (weight %). y 42 = -0.545a + 29.735 (42)

[0047] <Method for filling a mixed refrigerant with a filling volume of 80% by weight of the maximum filling volume at 65°C> Section 43. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 51.2% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 80% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 43 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 43 = -0.54a + 29.637 (43)

[0048] <Method for filling a mixed refrigerant with a filling volume of 70% by weight of the maximum filling volume at 65°C> Section 44. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 51.5% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 70% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 44 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 44 = -0.54a + 29.553 (44)

[0049] <Method for filling a mixed refrigerant with a filling volume of 60% by weight of the maximum filling volume at 65°C> Section 45. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 51.9% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 60% by weight or less of the maximum filling capacity of the supply container, in liquid form: 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 45A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 45 = -0.535a + 29.435 (45)

[0050] <Method for filling a mixed refrigerant with a filling amount of 50% by weight of the maximum filling amount at 65°C> Section 46. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 52.4% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 50% by weight or less of the maximum filling capacity of the supply container, in liquid form: 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 46 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 46 = -0.48a + 29.15 (46)

[0051] Filling method for each filling volume (when fixing the filling volume of HFO-1234yf)

[14] 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. <Method for filling a mixed refrigerant with a filling amount of 100% by weight of the maximum filling amount at 45℃> Section 47. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, the liquid phase contains 50.5% by weight of HFO-1234yf and 26% to 30% by weight of HFO-1132(E), from a supply container filled to a destination container and / or equipment in liquid form, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 47 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 47 = -0.5a ​​+ 29.78 (47)

[0052] <Method for filling a mixed refrigerant with a filling volume of 90% by weight of the maximum filling volume at 45°C> Section 48. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 50.7% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 90% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 48 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 48 = -0.495a + 29.688 (48)

[0053] <Method for filling a mixed refrigerant with a filling volume of 80% by weight of the maximum filling volume at 45°C> Section 49. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 50.9% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 80% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 49 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 49 = -0.495a + 29.592 (49)

[0054] <Method for filling a mixed refrigerant with a filling volume of 70% by weight of the maximum filling volume at 45°C> Section 50. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 51.1% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 70% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 50 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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 %). y 50 = -0.54a + 29.633 (50)

[0055] <Method for filling a mixed refrigerant with a filling volume of 60% by weight of the maximum filling volume at 45°C> Section 51. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 51.4% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 60% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 51A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 51 = -0.49a + 29.38 (51)

[0056] <Method for filling a mixed refrigerant with a filling amount of 50% by weight of the maximum filling amount at 45°C> Section 52. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, HFO-1234yf is present in the liquid phase at an amount of 51.9% by weight and HFO-1132(E) at an amount of 26% to 30% by weight, from a supply container filled to a destination container and / or equipment at an amount of 50% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 52 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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 %). y 52 = -0.535a + 29.412 (52) [Effects of the Invention]

[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. [Modes for carrying out the invention]

[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" means: (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 refrigeration machine by mixing with at least refrigeration oil, (3) The refrigeration working fluid includes at least refrigeration 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] This specification will use the following terms: 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 codes R479A: R1132(E): 28.0 wt%, R1234yf: 50.5 wt%, R32: 21.5 wt%

[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 economy.

[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 major 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 refrigerant from the supply container (such as cylinders or tank trucks) to the refrigeration and air conditioning equipment or cylinders at the supply destination 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% 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% 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% 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% 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% 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% 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 handling containers at temperatures above 40°C, the handling temperature during transfer and filling in Japan is between 0°C and 40°C.

[0086] This disclosure states that 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 volume 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 represents the allowable "deviation" from the target composition.

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

[0089] The method for filling mixed refrigerants in each filling volume of the present disclosure allows for keeping the compositional changes in the receiving container and / or equipment 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 to a specific range before transfer, 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 fixing the amount of HFC-32 to be filled) [1] 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 including HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C as the filling constant.

[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) <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of 30% by weight (target upper limit composition) to 4.0% by weight (target lower limit composition) from the target upper limit composition of HFO-1132(E) when transferring the mixed refrigerant from the source container to the destination container and / or equipment, from the start to the completion of the transfer.

[0093] "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] Filling method 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 receiving container and / or equipment, when the amount of mixed refrigerant to be filled into the receiving 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 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 filled from the supplying container to the receiving container and / or equipment. When performing liquid transfer and filling, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of 30% by weight (target upper limit composition) to 30% by weight - 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start to the completion of the transfer and filling, 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 and filling is set 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 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 30% by weight - 4.0% by weight (target lower limit composition) to a target upper limit composition of 30% by weight until the transfer filling is completed.

[0097] 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 source container before the start of transfer filling to 27.7% by weight (minimum value) or more and 30% by weight (target upper composition) or less, 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) to 30% by weight (target upper 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) <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of 29.5% by weight to 3.0% by weight (target lower limit composition) of HFO-1132(E) from the target upper limit composition of 29.5% by weight to the target lower limit composition, when transferring mixed refrigerant from the source container to the destination container and / or equipment, from the start to the completion of the transfer.

[0101] The "Target Upper Limit Composition: 29.5% by weight" is the maximum allowable 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.

[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] Filling method 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 receiving container and / or equipment, when the amount of mixed refrigerant to be filled into the receiving container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant comprises HFO-1132(E), HFO-1234yf, and HFC-32, and in the liquid phase, HFO-1132(E) is present in an amount 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, and the mixed refrigerant is filled from the supplying container to the receiving container and / or equipment in liquid form. During the transfer and filling process, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container 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 and filling to the completion of the transfer and filling, 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 and filling is set 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 within 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 source container before the start of transfer 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).

[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 within 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) <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of HFO-1132(E) wt% to target upper limit composition (x) wt% - 2.0 wt% (target lower limit composition) when transferring mixed refrigerant from the source container to the destination container and / or equipment, from the start to the completion of the transfer.

[0109] The "Target Upper Limit Composition: 29% 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.

[0110] The "Target Lower Limit Composition: 29% by weight - 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] Filling method 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 receiving container and / or equipment, when the amount of mixed refrigerant to be filled into the receiving 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 an amount of 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 filled from the supplying container to the receiving container and / or equipment. When transferring and filling, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container 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 and filling to the completion of the transfer and filling, 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 and filling is set to 28.7% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

[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 the target upper limit composition of 29% by weight - 2.0% by weight (target lower limit composition) to the target upper limit composition of 29% by weight until the transfer filling is completed.

[0113] 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 source container before the start of transfer filling to 28.7% by weight (minimum value) and 29% by weight (target upper composition), in order to keep the target upper 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 fixing the amount of HFC-32 to be filled) [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 including HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C as the filling constant.

[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) <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of the target upper limit composition (x) wt% to the target upper limit composition of 30 wt% - 4.0 wt% (target lower limit composition) of HFO-1132(E) from the start to the completion of the transfer.

[0118] "Target upper limit composition: 30% by weight" is the maximum value that allows the composition of HFO-1132(E) in the total composition (liquid phase + gas phase) of the mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 required in the supplier's container and / or equipment to be within this range.

[0119] "Target lower limit composition: 30% by weight - 4.0% by weight" is the minimum value that allows the composition of HFO-1132(E) in the total composition (liquid phase + gas phase) of the mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 required in the supplier's container and / or equipment to be within this range.

[0120] Filling method when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight. When the filling amount of the mixed refrigerant into the supplier's container and / or equipment is appropriately adjusted, the filling method of the mixed refrigerant of the present disclosure is that the mixed refrigerant contains HFO-1132(E), HFO-1234yf, and HFC-32. When transferring and filling the liquid-phase mixed refrigerant containing HFO-1132(E) in an amount of 26% to 30% by weight with respect to the total 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32 from the supply source container to the 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 from the start to the end of the transfer filling within the range of the target upper limit composition of HFO-1132(E) of 30% by weight to the target lower limit composition of 30% by weight - 4.0% by weight, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container before the start of the transfer filling is made to be 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 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 30% by weight - 4.0% by weight (target lower limit composition) to a target upper limit composition of 30% by weight until the transfer filling is completed.

[0122] 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 source container before the start of transfer filling to 27.8% by weight (minimum value) or more and 30% by weight (target upper composition) or less, 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) to 30% by weight (target upper 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) <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of 29.5% by weight to 3.0% by weight (target lower limit composition) of HFO-1132(E) from the target upper limit composition of 29.5% by weight to the target lower limit composition, when transferring mixed refrigerant from the source container to the destination container and / or equipment, from the start to the completion of the transfer.

[0126] The "Target Upper Limit Composition: 29.5% by weight" is the maximum allowable 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.

[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] Filling method 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 receiving container and / or equipment, when the amount of mixed refrigerant to be filled into the receiving container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant comprises HFO-1132(E), HFO-1234yf, and HFC-32, and in the liquid phase, HFO-1132(E) is present in an amount 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, and the mixed refrigerant is filled from the supplying container to the receiving container and / or equipment in liquid form. During the transfer and filling process, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container 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 and filling to the completion of the transfer and filling, 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 and filling is set 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 within 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 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 filling to 28.3% 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 - 3.0% by weight (target lower composition) to the target upper composition (x) by weight.

[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) <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source 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) when transferring mixed refrigerant from the source container to the destination container and / or equipment, from the start to the completion of the transfer.

[0134] "Target upper limit composition: 29% by weight" is the maximum value that allows the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of the mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 required in the supplier's container and / or equipment to be within this range.

[0135] "Target lower limit composition: 29% by weight - 2.0% by weight" is the minimum value that allows the composition of HFO-1132(E) in the overall composition (liquid phase + gas phase) of the mixed refrigerant containing HFO-1132(E), HFO-1234yf, and HFC-32 required in the supplier's container and / or equipment to be within this range.

[0136] Filling method when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight. When the filling amount of the mixed refrigerant into the supplier's container and / or equipment is appropriately adjusted, the filling method of the mixed refrigerant of the present disclosure is that the mixed refrigerant contains HFO-1132(E), HFO-1234yf, and HFC-32, and for a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in the liquid phase, when transferring and filling a mixed refrigerant in which HFO-1132(E) is present in an amount of 27% to 29% by weight from the supply source container to the supply destination container and / or equipment in a liquid state, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply source container from the start to the end of the transfer filling within the range of the target upper limit composition of HFO-1132(E) of 29% by weight to the target lower limit composition of 29% by weight - 2.0% by weight, the liquid-phase mixing ratio (initial composition) of HFO-1132(E) in the mixed refrigerant in the supply source container before the start of the transfer filling is made 28.8% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less, which is characterized by this.

[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 the target upper limit composition of 29% by weight - 2.0% by weight (target lower limit composition) to the target upper limit composition of 29% by weight until the transfer filling is completed.

[0138] 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 source container before the start of transfer filling to 28.8% by weight (minimum value) and 29% by weight (target upper composition), in order to keep the target upper 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] Filling method for each filling volume (when fixing the filling volume of HFC-32) [3] 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 including HFO-1132(E), HFO-1234yf, and HFC-32) at 65°C as the filling constant.

[0142] (1) Method of filling mixed refrigerant at a 100% by weight filling amount of the maximum filling volume (Tables 2, 8, and 14) <Method for filling mixed refrigerants at 65°C (100% of maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment in liquid form, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 11 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (11) (weight %). y 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 of filling mixed refrigerant at a filling volume of 90% by weight of the maximum filling volume (Tables 3, 9, and 15) <Method for filling mixed refrigerants at 65°C (90% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 90% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 12 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (12) (weight %). y 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 90wt%, 65℃, a=4), 9 (filling amount 90wt%, 65℃, a=3), and 15 (filling amount 90wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0146] (3) Method for filling mixed refrigerant at a filling volume of 80% by weight of the maximum filling volume (Tables 4, 10, and 16) <Method for filling mixed refrigerants at 65°C (80% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 80% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 13 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 13 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (13) (weight %). y 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 of filling mixed refrigerant at a filling volume of 70% by weight of the maximum filling volume (Tables 5, 11, and 17) <Method for filling mixed refrigerants at 65°C (70% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 70% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 14 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 14 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (14) (weight %). y 14 = -0.495a + 29.392 (14)

[0149] Equation (14) allows us to derive straight lines 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), 11 (filling amount 70 wt%, 65°C, a=3), and 17 (filling amount 70 wt%, 65°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0150] (5) Method for filling mixed refrigerants with a filling amount of 60% by weight of the maximum filling amount (Tables 6, 12, and 18) <Method for filling mixed refrigerants at 65°C (60% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 60% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 15 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 15 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (15) (weight %). y 15 = -0.495a + 29.292 (15)

[0151] Equation (15) allows us to derive straight lines for fixed HFC-32 filling amounts, based on the lower limit compositions of HFO-1132(E) in Tables 6 (filling amount 60 wt%, 65°C, a=4), 12 (filling amount 60 wt%, 65°C, a=3), and 18 (filling amount 60 wt%, 65°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0152] (6) Method for filling mixed refrigerants with a filling amount of 50% by weight of the maximum filling amount (Tables 7, 13, and 19) <Method for filling mixed refrigerants at 65°C (50% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When liquid-transferring a mixed refrigerant in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase with respect to a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32 from a source container filled with the mixed refrigerant 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 the HFO-1132(E) in the mixed refrigerant in the 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 source container immediately before the transfer filling is set to be (y 16 )% by weight (minimum value) or more and (28 + a)% by weight (maximum value) or less. A method for filling a mixed refrigerant. ±a: Set tolerance (a ≥ 0), preferably a = 2 to 4. y 16 : The minimum value in the initial composition of HFO-1132(E), which is a value represented by the following formula (16) (% by weight). y 16 = -0.545a + 29.328 (16)

[0153] When the filling amount of HFC-32 is fixed, formula (16) can derive a straight line based on the respective lower limit compositions of HFO-1132(E) in Table 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) for the set tolerances (a = 4, 3, and 2).

[0154] Filling method for each filling volume (when fixing the filling volume of HFC-32) [4] 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 including HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C as the filling constant.

[0155] (1) Method of filling mixed refrigerant at a filling amount of 100% by weight of the maximum filling amount (Tables 20, 26, and 32) <Filling method of the mixed refrigerant (100% filling amount of the maximum filling amount) at 45 °C> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 100% 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 supply container within ±a% by weight of the target composition (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 17 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. 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 %). y 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 mixed refrigerants with a filling amount of 90% by weight of the maximum filling amount (Tables 21, 27, and 33) <Method for filling mixed refrigerants at 45°C (90% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 90% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 18 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. 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 %). y 18 = -0.5a ​​+ 29.7 (18)

[0158] Equation (18) 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 21 (filling amount 90 wt%, 45°C, a=4), 27 (filling amount 90 wt%, 45°C, a=3), and 33 (filling amount 90 wt%, 45°C, a=2), with respect to set tolerances (a=4, 3, and 2).

[0159] (3) Method of filling mixed refrigerant at a filling volume of 80% by weight of the maximum filling volume (Tables 22, 28, and 34) <Method for filling mixed refrigerants at 45°C (80% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The mixed refrigerant contains trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32), When liquid-transfer filling the mixed refrigerant in which the HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase with respect to a total of 100% by weight of the HFO-1132(E), the HFO-1234yf, and the HFC-32 from a source container filled with the mixed refrigerant 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 the HFO-1132(E) in the mixed refrigerant in the 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 source container immediately before the transfer filling is made to be (y 19 )% 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), 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 19 = -√0.5a + 29.61 (19)

[0160] Formula (19) can derive a straight line based on the respective lower limit compositions of HFO-1132(E) in Table 22 (filling amount 80 wt%, 45 °C, a = 4), Table 2 8 (filling amount 80 wt%, 45 °C, a = 3), and Table 34 (filling amount 80 wt%, 45 °C, a = 2) when the filling amount of HFC-32 is fixed.

[0161] (4) Method of filling mixed refrigerant at a filling volume of 70% by weight of the maximum filling volume (Tables 23, 29, and 35) <Filling method of mixed refrigerant (filling amount of 70% by weight of maximum filling amount) at 45 °C> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 70% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 20 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 20 :This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (20) (weight %). y 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 mixed refrigerants with a filling amount of 60% by weight of the maximum filling amount (Tables 24, 30, and 36) <Method for filling mixed refrigerants at 45°C (60% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 60% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 21 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 21 :This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (21) (weight %). y 21 = -0.5a ​​+ 29.42 (21)

[0164] Equation (21) allows us to derive straight lines for fixed HFC-32 filling amounts, based on the 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 of filling mixed refrigerant at a filling volume of 50% by weight of the maximum filling volume (Tables 25, 31, and 37) <Method for filling mixed refrigerants at 45°C (50% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 50% or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 22 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 22 :This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (22) (weight %). y 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 respective 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 fixing the filling amount of HFO-1234yf)

[11] 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 65°C as the filling constant.

[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) <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of 30% by weight (target upper limit composition) to 4.0% by weight (target lower limit composition) from the target upper limit composition of HFO-1132(E) when transferring the mixed refrigerant from the source container to the destination container and / or equipment, from the start to the completion of the transfer.

[0169] "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] Filling method 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 receiving container and / or equipment, when the amount of mixed refrigerant to be filled into the receiving 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 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 filled from the supplying container to the receiving container and / or equipment. When performing liquid transfer and filling, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of 30% by weight (target upper limit composition) to 30% by weight - 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start to the completion of the transfer and filling, 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 and filling is set 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 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 30% by weight - 4.0% by weight (target lower limit composition) to a target upper limit composition of 30% by weight until the transfer filling is completed.

[0173] 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 source container before the start of transfer filling to 27.7% by weight (minimum value) or more and 30% by weight (target upper composition) or less, 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) to 30% by weight (target upper 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) <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of 29.5% by weight to 3.0% by weight (target lower limit composition) of HFO-1132(E) from the target upper limit composition of 29.5% by weight to the target lower limit composition, when transferring mixed refrigerant from the source container to the destination container and / or equipment, from the start to the completion of the transfer.

[0177] The "Target Upper Limit Composition: 29.5% by weight" is the maximum allowable 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.

[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] Filling method 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 receiving container and / or equipment, when the amount of mixed refrigerant to be filled into the receiving container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant comprises HFO-1132(E), HFO-1234yf, and HFC-32, and in the liquid phase, HFO-1132(E) is present in an amount 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, and the mixed refrigerant is filled from the supplying container to the receiving container and / or equipment in liquid form. During the transfer and filling process, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container 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 and filling to the completion of the transfer and filling, 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 and filling is set 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 within 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 source container before the start of transfer 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).

[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 within 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) <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of HFO-1132(E) wt% to target upper limit composition (x) wt% - 2.0 wt% (target lower limit composition) when transferring mixed refrigerant from the source container to the destination container and / or equipment, from the start to the completion of the transfer.

[0185] The "Target Upper Limit Composition: 29% 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.

[0186] The "Target Lower Limit Composition: 29% by weight - 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] Filling method 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 receiving container and / or equipment, when the amount of mixed refrigerant to be filled into the receiving 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 an amount of 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 filled from the supplying container to the receiving container and / or equipment. When transferring and filling, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container 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 and filling to the completion of the transfer and filling, 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 and filling is set to 28.7% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

[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 the target upper limit composition of 29% by weight - 2.0% by weight (target lower limit composition) to the target upper limit composition of 29% by weight until the transfer filling is completed.

[0189] 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 source container before the start of transfer filling to 28.7% by weight (minimum value) and 29% by weight (target upper composition), in order to keep the target upper 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 fixing the filling amount of HFO-1234yf)

[12] 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 including HFO-1132(E), HFO-1234yf, and HFC-32) at 45°C as the filling constant.

[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) <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 4.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of the target upper limit composition (x) wt% to the target upper limit composition of 30 wt% - 4.0 wt% (target lower limit composition) of HFO-1132(E) from the start to the completion of the transfer.

[0194] "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] Filling method 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 receiving container and / or equipment, when the amount of mixed refrigerant to be filled into the receiving 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 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 filled from the supplying container to the receiving container and / or equipment. When performing liquid transfer and filling, 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 and filling 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 and filling 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 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 30% by weight - 4.0% by weight (target lower limit composition) to a target upper limit composition of 30% by weight until the transfer filling is completed.

[0198] 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 source container before the start of transfer filling to 27.8% by weight (minimum value) or more and 30% by weight (target upper composition) or less, 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) to 30% by weight (target upper 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) <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container within the range of 29.5% by weight to 3.0% by weight (target lower limit composition) of HFO-1132(E) from the target upper limit composition of 29.5% by weight to the target lower limit composition, when transferring mixed refrigerant from the source container to the destination container and / or equipment, from the start to the completion of the transfer.

[0202] The "Target Upper Limit Composition: 29.5% by weight" is the maximum allowable 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.

[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] Filling method 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 receiving container and / or equipment, when the amount of mixed refrigerant to be filled into the receiving container and / or equipment is adjusted as appropriate, wherein the mixed refrigerant comprises HFO-1132(E), HFO-1234yf, and HFC-32, and in the liquid phase, HFO-1132(E) is present in an amount 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, and the mixed refrigerant is filled from the supplying container to the receiving container and / or equipment in liquid form. During the transfer and filling process, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container 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 and filling to the completion of the transfer and filling, 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 and filling is set 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 within 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 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 filling to 28.3% 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 - 3.0% by weight (target lower composition) to the target upper composition (x) by weight.

[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) <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> This section describes the mixing ratio of the mixed refrigerant in the source container before the transfer, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source 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) when transferring mixed refrigerant from the source container to the destination container and / or equipment, from the start to the completion of the transfer.

[0210] The "Target Upper Limit Composition: 29% 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.

[0211] The "Target Lower Limit Composition: 29% by weight - 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] Filling method 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 receiving container and / or equipment, when the amount of mixed refrigerant to be filled into the receiving 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 an amount of 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 filled from the supplying container to the receiving container and / or equipment. When transferring and filling, in order to keep the liquid-phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the source container 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 and filling to the completion of the transfer and filling, 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 and filling is set to 28.8% by weight (minimum value) or more and 29% by weight (target upper limit composition) or less.

[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 the target upper limit composition of 29% by weight - 2.0% by weight (target lower limit composition) to the target upper limit composition of 29% by weight until the transfer filling is completed.

[0214] 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 source container before the start of transfer filling to 28.8% by weight (minimum value) and 29% by weight (target upper composition), in order to keep the target upper 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] Filling method for each filling volume (when fixing the filling volume of HFO-1234yf)

[13] 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 65°C as the filling constant.

[0218] (1) Method of filling mixed refrigerant with a filling amount of 100% by weight of the maximum filling amount (Tables 38, 44, and 50) <Method for filling mixed refrigerants at 65°C (100% of maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment in liquid form, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 41 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 41 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (41) (weight %). y 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 lower limit compositions of HFO-1132(E) in Tables 38 (filling amount 100wt%, 65℃, a=4), 44 (filling amount 100wt%, 65℃, a=3), and 50 (filling amount 100wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0220] (2) Method for filling mixed refrigerants with a filling amount of 90% by weight of the maximum filling amount (Tables 39, 45, and 51) <Method for filling mixed refrigerants at 65°C (90% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 90% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 42 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (42) (weight %). y 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 of filling mixed refrigerant at a filling volume of 80% by weight of the maximum filling volume (Tables 40, 46, and 52) <Method for filling mixed refrigerants at 65°C (80% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 80% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 43 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 43 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (43) (weight %). y 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 of filling mixed refrigerant at a filling volume of 70% by weight of the maximum filling volume (Tables 41, 47, and 53) <Method for filling mixed refrigerants at 65°C (70% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 70% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 44 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 44 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (44) (weight %). y 44 = -0.54a + 29.553 (44)

[0225] Equation (44) allows us to derive straight lines for fixed filling amounts of HFO-1234yf, based on the 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 mixed refrigerants with a filling amount of 60% by weight of the maximum filling amount (Tables 42, 48, and 54) <Method for filling mixed refrigerants at 65°C (60% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 60% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 45 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 45 : This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (45) (weight %). y 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), 48 (filling amount 60wt%, 65℃, a=3), and 54 (filling amount 60wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0228] (6) Method for filling mixed refrigerants with a filling amount of 50% by weight of the maximum filling amount (Tables 43, 49, and 55) <Method for filling mixed refrigerants at 65°C (50% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 50% or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 46 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 46 :This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (46) (weight %). y 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), 49 (filling amount 50wt%, 65℃, a=3), and 55 (filling amount 50wt%, 65℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0230] Filling method for each filling volume (when fixing the filling volume of HFO-1234yf)

[14] 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.

[0231] (1) Method of filling mixed refrigerant at a filling amount of 100% by weight of the maximum filling amount (Tables 56, 62, and 68) <Method for filling mixed refrigerants at 45°C (100% of maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 100% 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 supply container within ±a% by weight of the target composition (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 47 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 47 :This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (47) (weight %). y47 = -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), 62 (filling amount 100wt%, 45℃, a=3), and 68 (filling amount 100wt%, 45℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0233] (2) Method of filling mixed refrigerant at a filling amount of 90% by weight of the maximum filling amount (Tables 57, 63, and 69) <Method for filling mixed refrigerants at 45°C (90% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 90% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 48 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 48 :This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (48) (weight %). y 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), 63 (filling amount 90wt%, 45℃, a=3), and 69 (filling amount 90wt%, 45℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0235] (3) Method of filling mixed refrigerant at a filling volume of 80% by weight of the maximum filling volume (Tables 58, 64, and 70) <Method for filling mixed refrigerants at 45°C (80% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 80% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 49 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 49 :This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (49) (weight %). y 49= -0.495a + 29.592 (49)

[0236] Equation (49) allows us to derive straight lines for fixed filling amounts of HFO-1234yf, based on the 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 of filling mixed refrigerant at a filling volume of 70% by weight of the maximum filling volume (Tables 59, 65, and 71) <Method for filling mixed refrigerants at 45°C (70% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 70% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 50 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. 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 %). y 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), 65 (filling amount 70wt%, 45℃, a=3), and 71 (filling amount 70wt%, 45℃, a=2), with respect to set tolerances (a=4, 3, and 2).

[0239] (5) Method for filling mixed refrigerants with a filling amount of 60% by weight of the maximum filling amount (Tables 60, 66, and 72) <Method for filling mixed refrigerants at 45°C (60% by weight of the maximum filling volume)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 60% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 51 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. y 51 :This is the minimum value in the initial composition of HFO-1132(E), and is expressed by the following formula (51) (weight %). y 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 of filling mixed refrigerant at a filling amount of 50% by weight of the maximum filling amount (Tables 61, 67, and 73) <Method for filling mixed refrigerants at 45°C (50% by weight of the maximum filling amount)> A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 50% or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 52 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0), preferably a=2~4. 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 %). y 52= -0.535a + 29.412 (52)

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

[0243] [5] When a third component is added to a mixed refrigerant The mixed refrigerants of this disclosure are, in particular, 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] Supplier 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 truck, 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] Containers of the supplier The receiving container and / or equipment is preferably a sealed container capable of storing the mixed refrigerant supplied from the supplying 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 and filling, and examples of applications In the filling method of this disclosure, the means of transfer filling can be in accordance with conventional methods, preferably those that utilize a pressure difference, those that use 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 (handling), the greater the compositional change due to the transfer. By applying the transfer conditions for 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. [Examples]

[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 (the 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 volume 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 reason for selecting 40°C as the temperature during transfer and filling is as follows: • Japan's High Pressure Gas Safety Act prohibits the handling of containers at temperatures exceeding 40°C. • International law and other regulations require that handling at high temperatures be avoided. • The higher the temperature, the greater the change in composition. The data obtained at 40°C is considered 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] When fixing the amount of difluoromethane (HFC-32) being filled Table 1 shows the results of compositional changes (HFC-32 fixed: 21.5% by weight) during transfer filling, when the filling volume was calculated using a value obtained by dividing 1.05 by the specific gravity of the gas at 45°C as the filling constant.

[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 this 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) will 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] [Table 1]

[0273] Filling method for each set tolerance A 10L sealed container (the supplier's container) was filled with HFO-1132(E), HFO-1234yf, and HFC-32 at 40°C to the maximum possible amount (100% by weight) that could be filled with the original composition, 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 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 65°C as the filling constant.

[0276] (1) Filling method when the difference between the target upper limit composition and the target lower limit composition is 4.0% by weight <Method for filling mixed refrigerants 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 supplier's container: 100% by weight of the maximum filling amount Table 2 shows the compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0278] [Table 2]

[0279] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 2, 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 before the start of transfer filling to 27.7% by weight (minimum value) or 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). The target upper 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 27.7% by weight.

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

[0281] [Table 3]

[0282] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 3, 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 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 source container is 27.6% by weight.

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

[0284] [Table 4]

[0285] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 4, 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 before the start of transfer filling to 27.5% by weight (minimum value) or 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). The target upper 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 27.5% by weight.

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

[0287] [Table 5]

[0288] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 5, 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 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 source container is 27.4% by weight.

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

[0290] [Table 6]

[0291] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container 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 before the start of transfer filling to 27.3% by weight (minimum value) or 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). The target upper 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 supplier's container: Maximum filling amount 50% by weight Table 7 shows the compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0293] [Table 7]

[0294] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 7, 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 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 source 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 <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> HFC-32 fixed: 23.0% by weight

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

[0297] [Table 8]

[0298] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 8, 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 before the start of transfer 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). The target upper 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 supplier's container: 90% by weight of the maximum filling amount Table 9 shows the compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0300] [Table 9]

[0301] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 9, 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 before the start of transfer filling to 28.1% 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). The target upper 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 28.1% by weight.

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

[0303] [Table 10]

[0304] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container 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 source container before the start of transfer and filling to 28.0% 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). The target upper 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 28.0% by weight.

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

[0306] [Table 11]

[0307] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 11, 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 before the start of transfer and filling to 27.9% 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). The target upper 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 27.9% by weight.

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

[0309] [Table 12]

[0310] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container 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 before the start of transfer filling to 27.8% 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). The target upper 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 supplier's container: 50% by weight of the maximum filling amount Table 13 shows the compositional changes during transfer when the initial composition of HFO-1132(E) in the liquid phase was adjusted to the target upper limit composition.

[0312] [Table 13]

[0313] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 13, 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 before the start of transfer filling to 27.7% 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). The target upper 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 <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> HFC-32 fixed: 22.5% by weight

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

[0316] [Table 14]

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

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

[0319] [Table 15]

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

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

[0322] [Table 16]

[0323] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container 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 source container before the start of transfer filling to 28.6% by weight (minimum value) or more and 29.0% by weight (target upper composition) or less, in order to keep the target upper composition of HFO-1132(E) within the range of 29.0% by weight (target lower composition) to 29.0% by weight. The target upper composition (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 28.6% by weight.

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

[0325] [Table 17]

[0326] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container 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 before the start of transfer and filling to 28.4% by weight (minimum value) or more and 29.0% by weight (target upper composition) or less, in order to keep the target upper composition of HFO-1132(E) within the range of 29.0% by weight (target lower composition) to 29.0% by weight. The target upper 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 supplier's container: 60% by weight of the maximum filling amount Table 18 shows the compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0328] [Table 18]

[0329] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container 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 source container before the start of transfer filling to 28.3% by weight (minimum value) or more and 29.0% by weight (target upper composition) or less, in order to keep the target upper composition of HFO-1132(E) within the range of 29.0% by weight (target lower composition) to 29.0% by weight. The target upper 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 28.3% by weight.

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

[0331] [Table 19]

[0332] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 19, 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 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 source 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 <Method for filling mixed refrigerants 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 supplier's container: 100% by weight of the maximum filling amount Table 20 shows the compositional changes during transfer when the initial composition of HFO-1132(E) in the liquid phase was adjusted to the target upper limit composition.

[0336] [Table 20]

[0337] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container 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 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 source container is 27.8% by weight.

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

[0339] [Table 21]

[0340] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 21, 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 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 source container is 27.7% by weight.

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

[0342] [Table 22]

[0343] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container 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 source container before the start of transfer filling to 27.6% by weight (minimum value) or 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 source container is 27.6% by weight.

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

[0345] [Table 23]

[0346] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 23, 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 before the start of transfer filling to 27.5% by weight (minimum value) or 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 - 4.0% by weight (target lower composition) to 30% by weight. The target upper 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 27.5% by weight.

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

[0348] [Table 24]

[0349] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 24, 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 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 source container is 27.4% by weight.

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

[0351] [Table 25]

[0352] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 25, 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 before the start of transfer filling to 27.3% by weight (minimum value) or more and 30% by weight (target upper composition) or less, 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). The target upper 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.

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

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

[0355] [Table 26]

[0356] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container 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 source 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 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 source container is 28.3% by weight.

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

[0358] [Table 27]

[0359] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 27, 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 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 source container is 28.2% by weight.

[0360] (2-3) Initial filling amount in the supplier's container: 80% by weight of the maximum filling amount Table 28 shows the compositional changes during transfer when the initial composition of HFO-1132(E) in the liquid phase was adjusted to the target upper limit composition.

[0361] [Table 28]

[0362] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 28, 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 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 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 source container is 28.1% by weight.

[0363] (2-4) Initial filling amount in the supplier's container: 70% by weight of the maximum filling amount Table 29 shows the compositional changes during transfer when the initial composition of HFO-1132(E) in the liquid phase was adjusted to the target upper limit composition.

[0364] [Table 29]

[0365] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 29, 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 before the start of transfer 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 source container is 28.0% by weight.

[0366] (2-5) Initial filling amount in the supplier's container: 60% by weight of the maximum filling amount Table 30 shows the compositional changes during transfer when the initial composition of HFO-1132(E) in the liquid phase was adjusted to the target upper limit composition.

[0367] [Table 30]

[0368] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 30, 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 before the start of transfer filling to 27.9% 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 - 3.0% by weight (target lower composition) to 30% by weight. The target upper 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 27.9% by weight.

[0369] (2-6) Initial filling amount in the supplier's container: 50% by weight of the maximum filling amount Table 31 shows the compositional changes during transfer when the initial composition of HFO-1132(E) in the liquid phase was adjusted to the target upper limit composition.

[0370] [Table 31]

[0371] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 31, 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 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 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 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 <Method for filling mixed refrigerants at 45°C (range from upper limit (weight%) to (upper limit - 2.0) (weight%))> HFC-32 fixed: 22.5% by weight

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

[0374] [Table 32]

[0375] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 32, 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 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 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 28.8% by weight.

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

[0377] [Table 33]

[0378] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 33, 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 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 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 28.7% by weight.

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

[0380] [Table 34]

[0381] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 34, 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 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 upper limit composition). 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 28.6% by weight.

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

[0383] [Table 35]

[0384] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 35, 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 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 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 28.5% by weight.

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

[0386] [Table 36]

[0387] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 36, 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 before the start of transfer 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 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.

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

[0389] [Table 37]

[0390] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 37, 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 before the start of transfer filling to 28.3% 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 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 28.3% by weight.

[0391] [B] When fixing the amount of R1234yf filling [B-1] 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 65°C as the filling constant.

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

[0393] (1-1) Initial filling amount in the supplier's container: 100% by weight of the maximum filling amount Table 38 shows the results of compositional changes during transfer when the initial composition of HFO-1132(E) in the liquid phase was adjusted to the target upper limit composition.

[0394] [Table 38]

[0395] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 38, 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 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 source container is 27.7% by weight.

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

[0397] [Table 39]

[0398] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 39, 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 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 source container is 27.6% by weight.

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

[0400] [Table 40]

[0401] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 40, 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 before the start of transfer filling to 27.5% by weight (minimum value) or 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). The target upper 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 27.5% by weight.

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

[0403] [Table 41]

[0404] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 41, 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 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 source container is 27.4% by weight.

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

[0406] [Table 42]

[0407] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 42, 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 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 source container is 27.3% by weight.

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

[0409] [Table 43]

[0410] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 43, 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 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 source 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 <Method for filling mixed refrigerants at 65°C (range from upper limit (weight%) to (upper limit - 3.0) (weight%))> R1234yf fixed: 52.0% by weight

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

[0413] [Table 44]

[0414] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 44, 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 before the start of transfer 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). The target upper 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.

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

[0416] [Table 45]

[0417] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 45, 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 before the start of transfer and filling to 28.1% 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). The target upper 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 28.1% by weight.

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

[0419] [Table 46]

[0420] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 46, 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 before the start of transfer filling to 28.1% 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). The target upper 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 28.1% by weight.

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

[0422] [Table 47]

[0423] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 47, 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 before the start of transfer and filling to 27.9% 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 29.5% by weight. The target upper 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 27.9% by weight.

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

[0425] [Table 48]

[0426] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 48, 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 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 29.5% 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 source container is 27.8% by weight.

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

[0428] [Table 49]

[0429] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 49, 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 before the start of transfer and filling to 27.7% 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). The target upper 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.

[0430] (3) Filling method when the difference between the target upper limit composition and the target lower limit composition is 2.0% by weight <Method for filling mixed refrigerants 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 supplier's container: 100% by weight of the maximum filling amount Table 50 shows the results of compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0432] [Table 50]

[0433] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 50, 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 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 source container is 28.7% by weight.

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

[0435] [Table 51]

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

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

[0438] [Table 52]

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

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

[0441] [Table 53]

[0442] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 53, 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 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 source container is 28.5% by weight.

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

[0444] [Table 54]

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

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

[0447] [Table 55]

[0448] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 55, 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 before the start of transfer filling to 28.2% by weight (minimum value) or more and 29.0% by weight (target upper composition) or less, in order to keep the target upper composition of HFO-1132(E) within the range of 29.0% by weight (target lower composition) to 29.0% by weight. The target upper 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 28.2% 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 <Method for filling mixed refrigerants 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 supplier's container: 100% by weight of the maximum filling amount Table 56 shows the results of compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0452] [Table 56]

[0453] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 56, 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 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 source container is 27.8% by weight.

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

[0455] [Table 57]

[0456] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 57, 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 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 source container is 27.7% by weight.

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

[0458] [Table 58]

[0459] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 58, 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 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 source container is 27.6% by weight.

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

[0461] [Table 59]

[0462] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 59, 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 before the start of transfer filling to 27.5% by weight (minimum value) or 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). The target upper 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 27.5% by weight.

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

[0464] [Table 60]

[0465] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 60, 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 before the start of transfer filling to 27.4% by weight (minimum value) or more and 30% by weight (target upper composition) or less, 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). The target upper 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 27.4% by weight.

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

[0467] [Table 61]

[0468] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 61, 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 before the start of transfer filling to 27.3% by weight (minimum value) or more and 30% by weight (target upper composition) or less, 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). The target upper 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.

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

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

[0471] [Table 62]

[0472] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 62, 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 before the start of transfer filling to 28.3% 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 30% by weight. The target upper 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 28.3% by weight. (2-2) Initial filling amount in the supplier's container: 90% by weight of the maximum filling amount Table 63 shows the compositional changes during transfer when the initial composition of HFO-1132(E) in the liquid phase was adjusted to the target upper limit composition.

[0473] [Table 63]

[0474] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 63, 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 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 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 source container is 28.2% by weight. (2-3) Initial filling amount in the supplier's container: 80% by weight of the maximum filling amount Table 64 shows the compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0475] [Table 64]

[0476] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 64, 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 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 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 source container is 28.1% by weight. (2-4) Initial filling amount in the supplier's container: 70% by weight of the maximum filling amount Table 65 shows the compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0477] [Table 65]

[0478] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 65, 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 before the start of transfer 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 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 source container is 28.0% by weight. (2-5) Initial filling amount in the supplier's container: 60% by weight of the maximum filling amount Table 66 shows the compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0479] [Table 66]

[0480] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 66, 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 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 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 source container is 27.9% by weight. (2-6) Initial filling amount in the supplier's container: 50% by weight of the maximum filling amount Table 67 shows the compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0481] [Table 67]

[0482] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 67, 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 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 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 source 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 <Method for filling mixed refrigerants 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 supplier's container: 100% by weight of the maximum filling amount Table 68 shows the compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0485] [Table 68]

[0486] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 68, 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 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 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 28.8% by weight.

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

[0488] [Table 69]

[0489] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 69, 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 before the start of transfer filling to 28.7% 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 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 28.7% by weight.

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

[0491] [Table 70]

[0492] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 70, 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 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 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 28.6% by weight.

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

[0494] [Table 71]

[0495] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 71, 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 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 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 28.6% by weight.

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

[0497] [Table 72]

[0498] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container 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 before the start of transfer 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 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 supplier's container: 50% by weight of the maximum filling amount Table 73 shows the compositional changes during transfer and filling when the initial composition of HFO-1132(E) in the liquid phase is adjusted to the target upper limit composition.

[0500] [Table 73]

[0501] Liquid phase mixing ratio of HFO-1132(E) in the mixed refrigerant in the supply container As shown in Table 73, 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 before the start of transfer 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 upper limit composition). 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.

[0502] [C] Consideration By 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 performed without any countermeasures, and the entire 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, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase, from a supply container to a destination container and / or equipment, with a total weight of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in liquid form, 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 30% by weight (target upper limit composition) to 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start of transfer to 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, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 26.5% to 29.5% by weight in the liquid phase, 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 liquid form, 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 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), 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 28.2% 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, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 27% to 29% by weight in the liquid phase, from a supply container to a destination container and / or equipment, with a total weight of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in liquid form, 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 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), 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, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase, from a supply container to a destination container and / or equipment, with a total weight of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in liquid form, 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 30% by weight (target upper limit composition) to 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start of transfer to 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, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 26.5% to 29.5% by weight in the liquid phase, 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 liquid form, 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 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), A method for filling a mixed refrigerant, wherein, before the start of transfer filling, the liquid phase mixing ratio (initial composition) of the mixed refrigerant in the supply container of the HFO-1132(E) is 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, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 27% to 29% by weight in the liquid phase, 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 liquid form, 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 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), 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, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment in liquid form, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 amount is between (minimum)% by weight and (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) (weight %). the 11 = −0.6a+30.027 (11)

8. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 90% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 12 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (12) (weight %). y 12 = -0.5a+29.57 (12)

9. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 80% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 13 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 13 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (13) (weight %). y 13 = -0.545a+29.622 (13)

10. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 70% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 14 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 14 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (14) (weight %). y 14 = -0.495a+29.392 (14)

11. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 60% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 15 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 15 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (15) (weight %). y 15 = -0.495a+29.292 (15)

12. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 50% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 16 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 16 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (16) (weight %). y 16 = -0.545a+29.328 (16)

13. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 100% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 17 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 17 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (17) (weight %). y 17 = -0.5a+29.78 (17)

14. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 90% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 18 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 18 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (18) (weight %). y 18 = -0.5a+29.7 (18)

15. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 80% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 19 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 19 = -0.5a+29.61 (19)

16. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 70% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 20 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 20 = -0.495a+29.468 (20)

17. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 60% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 21 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 21 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (21) (weight %). y 21 = -0.5a+29.42 (21)

18. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 50% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 22 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 22 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (22) (weight %). y 22 = -0.495a+29.268 (22)

19. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase, from a supply container to a destination container and / or equipment, with a total weight of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in liquid form, 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 30% by weight (target upper limit composition) to 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start of transfer to 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.

20. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 26.5% to 29.5% by weight in the liquid phase, 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 liquid form, 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 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), 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 28.2% 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, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 27% to 29% by weight in the liquid phase, from a supply container to a destination container and / or equipment, with a total weight of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in liquid form, 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 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), 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, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 26% to 30% by weight in the liquid phase, from a supply container to a destination container and / or equipment, with a total weight of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, in liquid form, 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 30% by weight (target upper limit composition) to 4.0% by weight (target lower limit composition) of HFO-1132(E) from the start of transfer to 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.

23. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 26.5% to 29.5% by weight in the liquid phase, 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 liquid form, 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 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), A method for filling a mixed refrigerant, wherein, before the start of transfer filling, the liquid phase mixing ratio (initial composition) of the mixed refrigerant in the supply container of the HFO-1132(E) is 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, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant, in which HFO-1132(E) is present in an amount of 27% to 29% by weight in the liquid phase, 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 liquid form, 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 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), 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.

25. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment in liquid form, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 41 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 41 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (41) (weight %). the 41 = −0.6a+30.027 (41)

26. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 90% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 amount is between (minimum)% by weight and (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 formula (42) (weight %). y 42 = -0.545a+29.735 (42)

27. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 80% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 43 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 43 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (43) (weight %). and 43 = -0.54a+29.637 (43)

28. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 70% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 44 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 44 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (44) (weight %). and 44 = -0.54a+29.553 (44)

29. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 60% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 45 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 45 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (45) (by weight %). and 45 = -0.535a+29.435 (45)

30. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 50% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 46 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (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) (weight %). y 46 = -0.48a+29.15 (46)

31. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 100% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 47 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 47 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (47) (weight %). y 47 = -0.5a+29.78 (47)

32. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 90% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 48 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 48 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (48) (weight %). y 48 = -0.495a+29.688 (48)

33. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 80% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 49 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 49 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (49) (weight %). y 49 = -0.495a+29.592 (49)

34. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a maximum capacity of 70% by weight or less, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 50 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 50 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (50) (weight %). and 50 = -0.54a+29.633 (50)

35. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 60% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 51 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 51 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (51) (weight %). y 51 = -0.49a+29.38 (51)

36. A method for filling a mixed refrigerant, The aforementioned mixed refrigerant comprises trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and difluoromethane (HFC-32). When transferring a mixed refrigerant containing 26% to 30% by weight of HFO-1132(E) in the liquid phase, relative to a total of 100% by weight of HFO-1132(E), HFO-1234yf, and HFC-32, from a supply container filled to a destination container and / or equipment at a rate of 50% by weight or less of the maximum filling capacity of the supply container, 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 (28% by weight) of HFO-1132(E) from the start to the completion of the transfer and filling process, 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 52 A method for filling a mixed refrigerant so that the amount is between (minimum)% by weight and (maximum)% by weight. ±a: Set tolerance (a≧0) y 52 : This is the minimum value of HFO-1132(E) in its initial composition, and is expressed by the following formula (52) (weight %). and 52 = -0.535a+29.412 (52)

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