Refrigerant with low GWP value

Abstract

The invention relates to a refrigerant with a low GWP value, which can substitute R22 and be directly filled to such systems as air-conditioners/ heat pumps, etc. The refrigerant comprises propylene and 2,3,3,3-tetrafluoropropene and is prepared by the method of physically mixing the components according to a corresponding proportion in a liquid phase state. The refrigerant provided in the invention completely meets requirements for environment-friendly substitution of R22 at home and abroad at present since the ODP value of the refrigerant is zero and the GWP value is very low; the pressure of the refrigerant is close to that of R22, compression ratio of the refrigerant is smaller than that of R22, exhaust temperature and unit refrigerating capacity of the refrigerant is superior to those of R22, and the properties of the refrigerant are beneficial for long-term operation of a compressor; application of the refrigerant provided in the invention needs no change to equipment or parts of existing R22 refrigerating air-conditioning systems, and the refrigerant is soluble in mineral oil and can be directly filled.

Description

Technical field [0001] The present invention belongs to the field of refrigerants, and relates to a refrigerant composition, and in particular to a refrigerant composition used in refrigeration and air conditioning systems such as household air conditioners / heat pumps to replace difluoromonochloromethane (R22) with low global warming potential (GWP) Refrigerant composition. Background technique [0002] The Conference of the Parties to the Montreal Protocol, held in Montreal, Canada in September 2007, reached a new resolution, which stipulates that developed countries will completely stop the production and consumption of non-raw material R22 in 2020, and developing countries including China , To freeze the production and consumption of non-raw material HCFCs (about 70% of which are R22) at the average level of 2009 and 2010 in 2013, and complete the total phase-out by 2030. Compared with the original elimination schedule, the entire elimination process is much ahead of schedule...

AI Technical Summary

Problems solved by technology

Although these compositions are relatively low GWP compositions, they exist or the raw materials are difficult to obtain and the price is high, or the slip temperature is high, or the performance is low, or they cannot be directly filled and applied to the R22 system, or the exhaust temperature Higher deficiency

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