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Environment-friendly refrigerant and preparation method thereof

A refrigerant and environmentally friendly technology, applied in the field of environmentally friendly refrigerants and their preparation, can solve the problems of high GWP, high flammability, and inability to use mineral oil, etc., and achieve the effects of reducing charging volume, prolonging service life, and improving reliability

Inactive Publication Date: 2012-10-03
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The refrigerant compositions disclosed in the above-mentioned patents have disadvantages such as high GWP, cannot be directly filled and applied to HFC-134a systems, or are highly flammable, or cannot use mineral oil. Therefore, it is necessary to develop a refrigerant with better refrigeration performance. , a new refrigerant with better compatibility with existing systems and better environmental performance

Method used

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  • Environment-friendly refrigerant and preparation method thereof
  • Environment-friendly refrigerant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Physically mix HFC-1234yf, DME and HFC-134a in a liquid phase at a mass percentage of 30:20:50 to obtain an environmentally friendly refrigerant.

Embodiment 2

[0039] Physically mix HFC-1234yf, DME and HFC-134a in a liquid phase at a mass percentage of 40:20:40 to obtain an environmentally friendly refrigerant.

Embodiment 3

[0041] Physically mix HFC-1234yf, DME and HFC-134a in a liquid phase at a mass percentage of 50:20:30 to obtain an environmentally friendly refrigerant.

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Abstract

The invention discloses an environment-friendly refrigerant and a preparation method thereof. The environment-friendly refrigerant consists of 20-90 percent of 2,3,3,3-tetrafluoropropene, 5-25 percent of dimethyl ether and 5-55 percent of 1,1,1,2-tetrafluoroethane. The environment-friendly refrigerant has greater specific volume of saturated liquid, and thus the charging amount of the refrigerant in a refrigeration system can be greatly reduced; the environment-friendly refrigerant is favorable in environment-friendly performance, ODP (Ozone Depleting Power) is 0, GWP (Global Warming Potential) relative to HFC(Hydrochlorofluorocarbon)-134a is greatly reduced; the exhaust temperature is low, and thus the service life of a compressor can be prolonged and the reliability of refrigeration equipment is improved; synthetic oil or mineral oil can be used; and a refrigeration coefficient, a unit volume refrigeration amount and the operation pressure respectively approach to HFC-134a; and a traditional refrigerant can be directly replaced without replacing the compressor.

Description

technical field [0001] The invention relates to a refrigerant, in particular to an environmentally friendly refrigerant and a preparation method thereof. Background technique [0002] Due to the signing of the "Montreal Protocol" and the "Kyoto Protocol", countries have higher and higher requirements for the replacement of refrigerant CFC-12 (difluorodichloromethane), in addition to the basic requirement that the new refrigerant does not damage the ozone layer In addition, new refrigerants are required to have the lowest possible GWP (Global Warming Potential). [0003] The substitute for refrigerant CFC-12 currently on the market is mainly HFC-134a (1,1,1,2-tetrafluoroethane). Although HFC-134a has good thermal performance, ODP (Ozone Depletion Potential) is 0, and is non-flammable, but because its GWP is 1370, which is relatively large, it does not meet the current global energy-saving and emission-reduction requirements, so it is urgent to develop more environmental perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
Inventor 陈光明高赞军童继红韩晓红王树华陈琪周强唐黎明贺辉龙
Owner ZHEJIANG UNIV
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