Environment-friendly mixed refrigerant, coolant and refrigerating system

Abstract

The invention provides an environment-friendly mixed refrigerant and a refrigerating system. The environment-friendly mixed refrigerant comprises the following components in percentage by mass: 15-35% of fluoroethane, 41-80% of trifluoropropene and 1-30% of trifluoromethyl methyl ether. According to the environment-friendly mixed refrigerant, through the synergistic effect of all the components, the mixed refrigerant has a low GWP value; meanwhile, the trifluoromethyl methyl ether (RE143a) has the excellent flame retardant property which belongs to the A1 flammability grade, and therefore, the flammability of the environment-friendly mixed refrigerant can be weakened by adding the trifluoromethyl methyl ether (RE143a), and the mixed refrigerant has good safety performance; and the mixed refrigerant is adopted for refrigeration, volume refrigerating capacity and energy efficiency similar to the volume refrigerating capacity and energy efficiency of R134a can be obtained, and the problem that an existing refrigerant (R134a) is high in GWP value is solved.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to an environmentally friendly mixed refrigerant, refrigerant and refrigeration system. Background technique [0002] With the increasing severity of global warming, more and more attention has been paid to environmental protection issues. More than 170 countries around the world have signed the legally binding "Montreal Protocol-Kigali Amendment". The agreement came into effect on January 1, 2019. Therefore, a refrigerant that does not destroy the ozone layer and has a lower GWP value is required to complete the replacement and conversion work and be effectively used in air conditioning systems. [0003] At present, R134a used in automotive air conditioners has good thermal performance, ODP (ozone potential value) is 0, but because its GWP is 1430, it is within the control range of the Kigali Amendment, and phase-out has become an inevitable trend, so looking for Working flu...

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Problems solved by technology

[0007] The main purpose of the present invention is to provide an environmentally friendly mixed refrigerant, refrigerant and refrigeration system to solve the problems of high GWP or high flammability of refrigerant compositions in the prior art

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