Refrigerant containing trifluoroiodomethane, mixture containing refrigerant and heat exchange system containing refrigerant

Abstract

The invention provides a refrigerant containing trifluoroiodomethane. The refrigerant comprises the following three components in percentage by mass: 36%-80% of a first component, 8%-60% of a second component and 4%-24% of a third component, wherein the mass ratio is based on the total mass of the refrigerant substance; the first component is trifluoroiodomethane (R13I1); the second component is amixture of any two components selected from trifluoromethyl methyl ether (RE143a), 1, 1-difluoroethane (R152a), trans-1, 3, 3-tetrafluoropropene (R1234ze (E)), 3, 3, 3-trifluoropropene (R1243zf), 2,3, 3, 3-tetrafluoropropene (R1234yf), isobutane (R600a), dimethyl ether (RE170) and fluoroethane (R161); the third component is one of dimethyl ether (RE170) and cyclopropane (RC270); and the GWP of the refrigerant is less than or equal to 150. According to the refrigerant, the problems that the refrigerant GWP replacing R134a in an existing automobile air conditioning system is high in GWP and low in the refrigerating capacity can be solved, and meanwhile the problem that the heat exchange efficiency is low due to large temperature slippage is solved.

Description

technical field [0001] The present invention relates to a refrigerant technology, in particular to a refrigerant containing iodotrifluoromethane, a mixture containing it and a heat exchange system. Background technique [0002] R134a is a kind of automobile air-conditioning refrigerant widely used in China and the world at present. Because it has no damage to the ozone layer, it has been used as a substitute for R12 refrigerant. However, R134a still has a strong greenhouse gas effect (GWP value is 1550). The trend of environmental protection is becoming more and more serious. Regarding the "greenhouse effect" of HFCs, the Montreal Protocol Amendment requires a refrigerant that does not destroy the ozone layer and has a lower GWP value to replace the current high-GWP refrigerant and be effectively used in air-conditioning systems. In the F-gas Act of the European Union, the GWP of the refrigerant used in the automotive air-conditioning system is required to be less than 150,...

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Problems solved by technology

In the F-gas Act of the European Union, the GWP of the refrigerant used in the automotive air-conditioning system is required to be less than 150, but a perfect replacement for R134a (GWP=1300) has not yet been found, because the refrigerant has balanced refrigerant properties Therefore, the research on refrigerants has become a hot spot for domestic and foreign scholars and enterprises. Although some refrigerants in the prior art meet the lower GWP value, their thermal performance often cannot meet the requirements, and they cannot achieve better cooling and heating effects.

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