Ternary environment-friendly mixed refrigerant, its preparation method and refrigeration system

Abstract

The present application relates to the technical field of refrigerants, in particular, to a ternary environmentally friendly mixed refrigerant, a preparation method of the ternary environmentally friendly mixed refrigerant, and a refrigeration system. Ternary environmentally friendly mixed refrigerant, which includes 1,1-difluoroethane, 2,3,3,3-tetrafluoropropene and trifluoroiodomethane, the GWP value of the ternary environmentally friendly mixed refrigerant is less than 150, ODP The value is 0. In terms of mole percentage, the ternary environmentally friendly mixed refrigerant includes 40‑80% of 1,1‑difluoroethane, 4‑64% of 2,3,3,3‑tetrafluoropropene and 4‑52% of trifluoro Iodomethane. The preparation method of the ternary environment-friendly mixing system is as follows: mixing and stirring each component of the ternary environment-friendly mixing system in a liquid state at room temperature to obtain the ternary environment-friendly mixing system. The ternary environment-friendly hybrid system proposed by the present invention not only has the environmental protection characteristics of low GWP, but the cooling capacity per unit volume and the system performance coefficient are similar to R152a and the flammability is greatly improved, which can better replace the R152a refrigerant.

Description

technical field [0001] The present application relates to the technical field of refrigerants, in particular, to a ternary environmentally friendly mixed refrigerant, a preparation method of the ternary environmentally friendly mixed refrigerant, and a refrigeration system. Background technique [0002] In order to reduce the greenhouse effect, the parties to the Montreal Protocol reached the "Kigali Amendment" in October 2016, which included 18 hydrofluorocarbons (HFCs) in the controlled list, and formulated the regulations for developing countries and developed countries respectively. Regarding the HFCs phase-out plan, according to the HFCs phase-out plan, different countries or regions are actively formulating relevant regulations, and environmentally friendly refrigerants with a global warming potential (GWP) below 150 are likely to become the final refrigerants. 1,1-difluoroethane (R152a) has a GWP of 138 and is economical. It is an optional refrigerant for automotive a...

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Problems solved by technology

[0003] In order to solve the technical problems of poor environmental performance and flammability of R152a in the prior art, the primary purpose of the present invention is to propose an environmentally friendly mixed refrigerant, which has many advantages in terms of environmental protection, safety, physical properties, performance and economical efficiency of the refrigerant. Carefully screened in two dimensions to form an alternative refrigerant with lower GWP, higher safety and comparable thermodynamic performance compared with R152a, and proposed the preparation method of this environmentally friendly mixed refrigerant and the refrigeration system using this refrigerant

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