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Low-flammability heat transfer composition and heat transfer system

A technology of heat exchange system and heat transfer, which is applied in the field of low flammability heat transfer composition and heat exchange system, can solve the problems of increasing costs, and achieve the effect of convenient use and good thermal performance

Active Publication Date: 2019-12-31
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is necessary to redesign the equipment and structure of the refrigeration system, which increases the cost

Method used

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  • Low-flammability heat transfer composition and heat transfer system
  • Low-flammability heat transfer composition and heat transfer system
  • Low-flammability heat transfer composition and heat transfer system

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Embodiment Construction

[0023] The low-flammability heat transfer composition provided by this embodiment can be used in the following scenarios: air-conditioning systems of motor vehicles, household, commercial and industrial air-conditioning equipment, household, commercial and industrial refrigerators, refrigerators, refrigerated transporters, and ice machines any of these. Preferably, the heat exchange system applied to air-conditioning equipment in this embodiment is an HVACR system. Preferably, the heat exchange system includes a fluid-connected compressor, a condenser and an evaporator, an expansion device, and the present invention capable of fluid communication. A heat transfer composition is provided, preferably, the heat transfer composition comprises a lubricant selected from ester oils. Further preferably, the heat exchange system is a centrifugal chiller, the compressor is a centrifugal compressor, and the evaporator is a shell-and-tube type. Further preferably, the heat exchange system...

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Abstract

The invention provides a low-flammability heat transfer composition. The low-flammability heat transfer composition for a refrigerating system comprises four components, wherein the four components are composed of any four of 1,1,1,2,3,3,3-heptafluoropropane (R227ea), 3,3,3-trifluoropropene (R1243zf), trifluoromethyl methyl ether (RE143a), 2,3,3,3-tetrafluoropropene (R1234yf), trans-1,3,3,3-tetrafluoropropene (R1234ze (E)), 1,1-difluoroethane (R152a), and 1,1,1,2-tetrafluoroethane (R134a). The GWP of the adopted low-flammability heat transfer composition is less than or equal to 600, the ODP is 0, low flammability or non-flammability is achieved, and the obvious environment-friendly advantage is achieved; the refrigerating system adopting the low-flammability heat transfer composition doesnot need to change devices, a common R134a refrigerant can be replaced, and safe and environment-friendly work is achieved.

Description

technical field [0001] The invention relates to a refrigeration technology, in particular to a low-flammability heat transfer composition and a heat exchange system. Background technique [0002] With the increasingly serious trend of environmental protection, 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 middle. At present, large-scale air-conditioning and refrigeration systems commonly use refrigerants such as R134a, which have a GWP of 1300 and an ODP of 0. It is necessary to find a low-GWP refrigerant to replace. R1234yf can replace R134a in terms of GWP and performance, but the only regret is that it has weak flammability. From the perspective of safety in use and the possible leakage of the refrigerant after use, the requirements for the refrigeration system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
CPCC09K5/045C09K2205/112C09K2205/126C09K2205/128C09K2205/22C09K2205/40
Inventor 于艳翠赵桓梁尤轩雷佩玉黄宇杰
Owner GREE ELECTRIC APPLIANCES INC