Environment-friendly refrigerant and preparation method thereof

Abstract

The invention discloses an environment-friendly refrigerant and a preparation method thereof. The environment-friendly refrigerant consists of 20-90 percent of 2,3,3,3-tetrafluoropropene, 5-25 percent of dimethyl ether and 5-55 percent of 1,1,1,2-tetrafluoroethane. The environment-friendly refrigerant has greater specific volume of saturated liquid, and thus the charging amount of the refrigerant in a refrigeration system can be greatly reduced; the environment-friendly refrigerant is favorable in environment-friendly performance, ODP (Ozone Depleting Power) is 0, GWP (Global Warming Potential) relative to HFC(Hydrochlorofluorocarbon)-134a is greatly reduced; the exhaust temperature is low, and thus the service life of a compressor can be prolonged and the reliability of refrigeration equipment is improved; synthetic oil or mineral oil can be used; and a refrigeration coefficient, a unit volume refrigeration amount and the operation pressure respectively approach to HFC-134a; and a traditional refrigerant can be directly replaced without replacing the compressor.

Description

technical field [0001] The invention relates to a refrigerant, in particular to an environmentally friendly refrigerant and a preparation method thereof. Background technique [0002] Due to the signing of the "Montreal Protocol" and the "Kyoto Protocol", countries have higher and higher requirements for the replacement of refrigerant CFC-12 (difluorodichloromethane), in addition to the basic requirement that the new refrigerant does not damage the ozone layer In addition, new refrigerants are required to have the lowest possible GWP (Global Warming Potential). [0003] The substitute for refrigerant CFC-12 currently on the market is mainly HFC-134a (1,1,1,2-tetrafluoroethane). Although HFC-134a has good thermal performance, ODP (Ozone Depletion Potential) is 0, and is non-flammable, but because its GWP is 1370, which is relatively large, it does not meet the current global energy-saving and emission-reduction requirements, so it is urgent to develop more environmental perf...

AI Technical Summary

Problems solved by technology

[0008] The refrigerant compositions disclosed in the above-mentioned patents have disadvantages such as high GWP, cannot be directly filled and applied to HFC-134a systems, or are highly flammable, or cannot use mineral oil. Therefore, it is necessary to develop a refrigerant with better refrigeration performance. , a new refrigerant with better compatibility with existing systems and better environmental performance

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