Environmentally-friendly mixed working media

Abstract

The invention relates to the technical field of refrigerants, and concretely relates to environmentally-friendly mixed working media. One of the environmentally-friendly mixed working media comprisesa first component and a second component, wherein the first component is trifluoroiodomethane, and the second component is monofluoroethane; and the other environmentally-friendly mixed working mediumcomprises a first component, a second component and a third component, wherein the first component is trifluoroiodomethane, the second component is difluoromethane, and the third component is one of1,1-difluoroethane and trans-1,3,3,3-tetrafluoropropene. The components are uniformly physically mixed in proportion at normal temperature under normal pressure to obtain the environmentally-friendlymixed working media. The mixed working media provided by the invention have a good environmental performance, have a very low GWP (less than 150), and has same or better thermal performances than 1,1,1,2-tetrafluoroethane (R134a); and a preparation method of the mixed working media is simple and is easy to implement.

Description

technical field [0001] This application relates to the technical field of refrigerants, in particular, to an environmentally friendly mixed working fluid. Background technique [0002] HFCs refrigerants (including R410A, R134a, R404A and R407C, etc.) widely used in the refrigeration and air-conditioning industry are facing strict reduction plans due to their very high global warming potential (GWP). The Kigali Amendment to the "Montreal Protocol" passed in 2016 established a stringent reduction plan for high-GWP HFCs refrigerants, and China and other major developing countries will reduce them by 10% in 2029 (according to CO 2 equivalent calculation), and finally achieve an 80% reduction in 2045. It can be seen that the use of environmentally friendly refrigerants with low GWP has become an inevitable trend, but a more perfect alternative has not yet been found. Because the mixed working medium has the characteristics of balanced refrigerant properties, it plays a vital rol...

AI Technical Summary

Problems solved by technology

Some of the mixed working fluids in the prior art often weaken their thermal performance while achieving a lower GWP value, and cannot achieve better refrigeration and heating

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