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Heat transfer composition suitable for centrifugal refrigerating unit

A refrigeration unit and heat transfer technology, used in heat exchange materials, sustainable manufacturing/processing, chemical industry, etc., can solve the problems of low energy efficiency and low system capacity of centrifugal refrigeration units, and achieve good safety performance and good thermal power. performance effect

Active Publication Date: 2019-12-20
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention provides a heat transfer composition suitable for centrifugal refrigeration units, its GWP is less than or equal to 600, ODP is 0, has obvious environmental protection advantages, and has good thermodynamic performance, solves the existing problem of replacing R134a The problem of low system capacity or low energy efficiency of refrigerants used in centrifugal refrigeration units

Method used

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  • Heat transfer composition suitable for centrifugal refrigerating unit
  • Heat transfer composition suitable for centrifugal refrigerating unit
  • Heat transfer composition suitable for centrifugal refrigerating unit

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preparation example Construction

[0023] The preparation method of a heat transfer composition of the present invention is that the first component is 1,1,1,2,3,3,3-heptafluoropropane (R227ea) or 1,1,1,2-tetrafluoroethane alkane (R134a), the second component is trifluoromethyl methyl ether (RE143a), the third component is 2,3,3,3-tetrafluoropropene (R1234yf), 3,3,3-trifluoropropene The following combinations are made:

[0024] Combination first component second component third component Combination first component second component third component combination one R227ea RE143a R1234yf Combination five R134a RE143a R1243zf combination two R227ea RE143a R1243zf combination six R134a RE143a R1234ze(E) combination three R227ea RE143a R1234ze(E) Combination seven R134a RE143a R152a combination of four R134a RE143a R1234yf Combination of eight R227ea RE143a R152a

[0025] Preferably, carry out following combination...

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Abstract

The invention provides a heat transfer composition suitable for a centrifugal refrigerating unit. The composition comprises three components, wherein a first component is one selected from 1,1,1,2,3,3,3-heptafluoropropane (R227ea) and 1,1,1,2-tetrafluoroethane (R134a), a second component is trifluoromethyl methyl ether (RE143a), and a third component is one selected from the group consisting of 2,3,3,3-tetrafluoropropene (R1234yf), 3,3,3-trifluoropropene (R1243zf), trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) and 1,1-difluoroethane (R152a). The heat transfer composition has a GWP of 600 or less, an ODP of 0, and obvious environment-friendly advantages; and in addition, the heat transfer composition has good thermal performance and is used in the centrifugal refrigeration unit system, thecapacity and energy efficiency of the centrifugal refrigeration unit using the heat transfer composition are equivalent to those of a centrifugal refrigeration unit system using an R134a working medium, and the heat transfer composition can replace the R134a working medium without any change of the centrifugal refrigeration unit system.

Description

technical field [0001] The invention relates to a refrigerant technology, in particular to a heat transfer composition suitable for a centrifugal refrigeration unit. 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. For example, R134a is often used in large-scale air-conditioning chillers. Its GWP is 1300 and its ODP is 0. At present, technical methods often start from the perspective of single working fluid and mixed working fluid to find working fluids that meet both safety and environmental protection requirements and energy efficiency requirements of the air conditioning system. , but a perfect substitute for R134a has not yet been found. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
CPCC09K5/045C09K2205/112C09K2205/122C09K2205/126C09K2205/22C09K2205/40Y02P20/10
Inventor 于艳翠赵桓雷佩玉梁尤轩黄宇杰
Owner GREE ELECTRIC APPLIANCES INC