Quaternary environment-friendly mixed refrigerant, preparation method thereof and refrigerating system

Abstract

The invention relates to the technical field of refrigerants, in particular to a quaternary environment-friendly mixed refrigerant, a preparation method thereof and a refrigerating system. The quaternary environment-friendly mixed refrigerant comprises 2, 3, 3, 3-tetrafluoropropene, trifluoromethyl methyl ether, trifluoroiodomethane and fluoroethane, the GWP value of the quaternary environment-friendly mixed refrigerant is smaller than 100, and the ODP value of the quaternary environment-friendly mixed refrigerant is 0. The quaternary environment-friendly mixed refrigerant comprises the following components in percentage by mole: 5 to 70 percent of 2, 3, 3, 3-tetrafluoropropene, 5 to 25 percent of trifluoromethyl methyl ether, 5 to 25 percent of trifluoroiodomethane and 15 to 85 percent of fluoroethane. The preparation method of the quaternary environment-friendly mixed refrigerant comprises the following step of: mixing and stirring the components of the quaternary environment-friendly mixed refrigerant in a normal-temperature normal-pressure liquid-phase state to obtain the quaternary environment-friendly mixed refrigerant. The quaternary environment-friendly mixed refrigerant provided by the invention has the environment-friendly characteristic of low GWP, the refrigerating capacity per unit volume and the system performance coefficient of the mixed refrigerant are close to or better than those of R134a refrigerant, and the mixed refrigerant can better replace the R134a refrigerant.

Description

technical field [0001] The present application relates to the technical field of refrigerants, in particular, to a quaternary environment-friendly mixed refrigerant, a preparation method of the quaternary environment-friendly mixed refrigerant, and a refrigeration system. Background technique [0002] At the end of 2020, China proposed to strive to reach the peak of carbon dioxide emissions before 2030 and strive to achieve carbon neutrality before 2060. This undoubtedly puts forward higher requirements for the refrigeration industry. In the current situation of increasingly severe global warming Under the current situation, reducing the use of HFC is the focus of the current work in the field of refrigeration. 1,1,1,2-Tetrafluoroethane (R134a) is widely used in automotive air conditioners and other refrigeration systems due to its non-toxicity, non-flammability, non-corrosion, and good material compatibility. However, with the further strengthening of the control of refrig...

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Problems solved by technology

[0003] In order to solve the technical problem of poor environmental protection performance of R134a in the prior art, the primary purpose of the present invention is to propose an environmentally friendly mixed refrigerant, which is carefully screened from multiple dimensions of environmental protection, physical properties, performance and economical efficiency of the refrigerant to form Compared with R134a, an alternative refrigerant with lower GWP and equivalent thermodynamic performance, and a preparation method of the environmentally friendly mixed refrigerant and a refrigeration system using the refrigerant are proposed

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