Composition with low global warming potential (GWP) value

Abstract

The invention provides a low global warming potential (GWP) refrigerant composition, which is directly filled to replace R22 in systems such as a household air conditioning / heat pump and the like. The refrigerant consists of propane and 2,3,3,3-tetrafluoropropene, and a preparation method comprises a step of physically mixing various components in a liquid phase in corresponding proportions. The ozone depletion potential (ODP) value of the refrigerant composition is zero, the GWP value is very low, and the refrigerant composition completely meets the environment-friendly requirement of replacing R22 abroad and at home at present, and represents the development direction of an environmental performance index of next refrigerant substitutes; the pressure of the refrigerant composition is close to that of the R22 and slightly lower than that of the R22, the compression ratio is smaller than that of the R22, and the discharge temperature is greatly superior to that of the R22, which are favorable for long-term operation of a compressor; the COP is slightly higher than that of the R22, and a certain energy-saving effect is achieved; he refrigerating capacity in unit mass is superior to that of the R22, and the refrigerant filling amount of a system can be reduced correspondingly; the refrigerating capacity in unit volume is equal to that of the R22, and the load requirement of a refrigeration air conditioning after the refrigerant composition replaces the R22 can be met; the equipment and parts of the conventional R22 refrigeration air conditioning are not needed to be changed; and the refrigerant composition is soluble with mineral oil, so the refrigerant composition can be directly filled.

Description

technical field [0001] The invention belongs to the field of refrigerants, and relates to a refrigerant composition, in particular to a refrigerant with low global warming potential (GWP) which is used in refrigeration and air-conditioning systems such as household air conditioners / heat pumps to replace difluorochloromethane (R22) Refrigerant composition. Background technique [0002] In September 2007, the "Montreal Protocol" Conference of the Parties held in Montreal, Canada, 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 complete phase-out in 2030. Compared with the original phase-out schedule, the entire phase-out process has been greatly advanced. At present, about ...

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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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