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Composition containing compound useful as refrigerant, detergent, propellant, or the like, and refrigerating machine, large-sized air conditioner, or industrial process cooler each including said composition

A technology of composition and compound, applied in the direction of detergent composition, non-surface active detergent composition, refrigerator, etc., can solve the problems of insufficient freezing capacity of HFO refrigerant, corrosion of piping, difficulty in applying to large-scale air-conditioning equipment, etc. , to achieve the effect of excellent freezing ability, low flammability and high effectiveness

Inactive Publication Date: 2020-01-03
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the refrigerating capacity of the above-mentioned HFO refrigerants is insufficient, and there is room for improvement
In addition, HCFO-1233zd, which has a high boiling point, is in a negative pressure state during the operation of the equipment, and there is a risk of corroding the piping due to the contamination of external air, so it is not easy to apply to large air-conditioning equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 1

[0136] Pentafluorobutyne (PFB) was prepared as the refrigerant of Example 1, and HCFO-1233zd(E) was prepared as the refrigerant of Comparative Example 1.

[0137] Using the above refrigerants, evaluate COPc and refrigeration capacity (kJ / m 3 ), density (inhalation) (kg / m 3 ), suction pressure (MPa), discharge pressure (MPa), discharge temperature (°C).

[0138] Regarding the operating conditions (circulation conditions) of large-scale air-conditioning equipment, the evaporation temperature of the refrigerant in the evaporator is set to 0°C, the condensation temperature of the refrigerant in the condenser is set to 40°C, the degree of superheat is set to 5°C, and the degree of subcooling is set to 0°C.

[0139] Table 1 shows the results of each evaluation.

[0140] [Table 1]

[0141] The refrigerant PFB 1233 E COPc 3.80 4.10 freezing capacity [kJ / m3] 1113 442 Density (inhalation) [kg / m3] 10.59 2.78 suction pressure [Mpa] 0.16...

Embodiment 2 and comparative example 2

[0144] Pentafluorobutyne (PFB) was prepared as the refrigerant of Example 2, and HCFO-1233zd(E) was prepared as the refrigerant of Comparative Example 2.

[0145] Using the above refrigerants, evaluate COPc and refrigeration capacity (kJ / m 3 ), density (inhalation) (kg / m 3 ), suction pressure (MPa), discharge pressure (MPa), discharge temperature (°C).

[0146] Regarding the operating conditions (circulation conditions) of the turbo refrigerator, the evaporation temperature of the refrigerant in the evaporator was set to 5°C, the condensation temperature of the refrigerant in the condenser was set to 35°C, the degree of superheat was set to 0°C, and the degree of subcooling was set to 5°C.

[0147] Table 2 shows the results of each evaluation.

[0148] [Table 2]

[0149] The refrigerant PFB 1233 E COPc 5.77 6.01 freezing capacity [kJ / m3] 1501 594 Density (inhalation) [kg / m3] 12.81 3.47 suction pressure [Mpa] O.193 0.060 ...

Embodiment 3 and comparative example 3

[0152] Pentafluorobutyne (PFB) was prepared as the refrigerant of Example 3, and HCFO-1233zd(E) was prepared as the refrigerant of Comparative Example 3.

[0153] Using the above refrigerants, evaluate COPc, refrigeration capacity (kJ / m 3 ), density (inhalation) (kg / m 3 ), suction pressure (MPa), discharge pressure (MPa), discharge temperature (°C).

[0154] Regarding the operating conditions (circulation conditions) of the two-stage cycle turbo refrigerator, the evaporation temperature of the refrigerant in the evaporator is set to 5°C, the condensation temperature of the refrigerant in the condenser is set to 35°C, the degree of superheat is set to 0°C, and the supercooling The temperature is set to 5°C.

[0155] Table 3 shows the results of each evaluation.

[0156] [table 3]

[0157] The refrigerant PFB 1233 E COPc 6.36 6.47 freezing capacity [kJ / m3] 2554 640 Density (inhalation) [kg / m3] 18.01 3.47 suction pressure [Mpa...

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Abstract

The present invention provides: a composition containing a compound which has a low GWP although less flammable and which, even when applied to a large-sized air conditioner, is less apt to bring theair conditioner into a negative-pressure state during the operation; and a refrigerating machine, a large-sized air conditioner, or an industrial process cooler each including the composition. Specifically, the present invention provides: a composition containing a refrigerant, characterized in that the refrigerant comprises a compound represented by the general formula CmHnFxCly (1) (4<=m<=10; n+x+y=2m-2; the molecule contains a triple bond); and a refrigerating machine, a large-sized air conditioner, or an industrial process cooler each including the composition.

Description

technical field [0001] The present invention relates to a composition containing compounds useful as refrigerants, detergents, propellants, etc., and refrigerators, large air-conditioning equipment or industrial process cooling equipment containing the above-mentioned composition. Background technique [0002] At present, difluoromethane (HFC-32), which has less impact on the ozone layer, and four Hydrofluorocarbons (HFCs) such as fluoroethane and pentafluoroethane. However, HFC has a high GWP (global warming coefficient), and it is pointed out that it may cause global warming, and the demand for refrigerants with a small GWP is increasing. [0003] Based on the above background, 1-chloro-1,2-difluoroethylene (HCFO-1122), 1-chloro-1,2-difluoroethylene (HCFO-1122), 1-Chloro-3,3,3-trifluoropropene (HCFO-1233zd), etc. Regarding this point, Patent Document 1 discloses the use of HCFO-1122 as a working medium of a heat cycle system. [0004] However, the refrigerating capacit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04C09K3/30C11D7/30
CPCC09K3/30C09K5/045C09K2205/126C11D7/30F25B1/00C09K5/044C09K2205/22C09K2205/40
Inventor 四元佑树加留部大辅山田康夫
Owner DAIKIN IND LTD