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Mixed refrigerant containing 1,1-difluoroethane

A technology of mixing refrigerant and difluoroethane, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of environmental damage, excessive GWP value of pure R134a refrigerant, etc., to reduce flammability, reduce The effect of initial investment and high system performance

Inactive Publication Date: 2015-11-11
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] What the present invention aims to solve is the technical problem that the GWP value of the pure R134a refrigerant is too large and is destructive to the environment. It provides a new low-GWP mixed refrigerant containing 1,1-difluoroethane (R152a), After mixing R152a with HFO refrigerants, it can reduce the flammability of R152a, improve its safety performance, reduce the amount of HFO refrigerants, and reduce the initial investment cost of refrigerants. Its environmental protection and safety performance are excellent, and in In the actual system work, only a slight modification to the pure R134a refrigeration system can be used to charge the new mixed refrigerant

Method used

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  • Mixed refrigerant containing 1,1-difluoroethane
  • Mixed refrigerant containing 1,1-difluoroethane
  • Mixed refrigerant containing 1,1-difluoroethane

Examples

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Embodiment 1

[0018] Example 1: R152a, R134a and R1234yf are uniformly mixed at room temperature at a mass ratio of 10:10:80 using general physical methods to prepare a mixed refrigerant.

Embodiment 2

[0019] Example 2: R152a, R134a and R1234yf are uniformly mixed at room temperature at a mass ratio of 10:30:60 using general physical methods to prepare a mixed refrigerant.

Embodiment 3

[0020] Example 3: R152a, R134a and R1234yf are uniformly mixed at room temperature at a mass ratio of 10:50:40 using general physical methods to prepare a mixed refrigerant.

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Abstract

The invention belongs to the technical field of refrigerants and discloses a mixed refrigerant containing 1,1-difluoroethane. 1-difluoroethane(R152a), 2,3,3,3-tetrafluoropropene(R234yf) and 1,1,1,2-tetrafluoroethane(R134a) form a tertiary mixture. The mixed refrigerant can reduce flammability of the R152a and enhance safety performance of the R152a, the dosage of HFO refrigerants can be reduced, the original investment cost of the refrigerant is lowered, and the environmental friendliness and safety performance of the mixed refrigerant are good. Besides, in work of a real system, the filling of the novel mixed refrigerant can be performed by slightly modifying a pure R134a refrigerating system.

Description

technical field [0001] The invention belongs to the technical field of refrigerants, and in particular relates to a mixed refrigerant refrigerant containing 1,1-difluoroethane (R152a). Background technique [0002] In recent years, the international community has formulated a series of laws and regulations to limit the use of high global warming potential (GWP) refrigerants. On May 20, 2014, the European Commission issued regulations on fluorinated greenhouse gases (F-Gas), and the new regulations were officially implemented on January 1, 2015. reduced to one-third of today's levels. To achieve this goal, the supply of hydrofluorocarbons (HFCs) is reduced to one third of 2015 levels by 2030. For some refrigeration air conditioners and other products containing F-Gas, the European Commission has listed a cut-off timetable to impose stricter restrictions on the use of refrigerants through the GWP value, which stipulates that after January 1, 2015, charging Household refrige...

Claims

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Application Information

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IPC IPC(8): C09K5/04
Inventor 李敏霞马一太代宝民陈雪龙
Owner TIANJIN UNIV
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