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Mixed heat pump work substance with zero ozone layer destroying potential

A mixed working fluid and ozone destruction technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of compressor failure, atmospheric ozone layer destruction, high water temperature, etc., to reduce environmental protection requirements, thermal engineering Good parameters and good thermal performance

Inactive Publication Date: 2007-11-07
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the existing heat pump working fluid, or the outlet water temperature is too low (Freon-22 and 1,1,1,2-tetrafluoroethane), or has a destructive effect on the atmospheric ozone layer (that is, the ODP is not zero), or the outlet water The temperature is so high that the original compressor cannot work normally

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: 10% of HFC-134a, 10% of HFC-227ea and 80% of HFC-236ea were physically mixed in liquid phase.

Embodiment 2

[0031] Example 2: 45% of HFC-134a, 25% of HFC-227ea and 30% of HFC-236ea were physically mixed in liquid phase.

Embodiment 3

[0032] Example 3: 80% of HFC-134a, 5% of HFC-227ea and 15% of HFC-236ea were physically mixed in liquid phase.

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Abstract

The mixed heat pump work substance with zero ozone layer destroying potential is one kind of mixed refrigerating work substance for use in medium and high temperature water source heat pump set. The work substance contains three substances of 1, 1, 1, 2-tetrafluoro ethane, 1, 1, 1, 2, 3, 3, 3-heptafluoro propane and 1, 1, 1, 2, 3, 3-hexafluoro propane, or may have butane added to constitute quaternary mixed work substance. The preparation process is physical mixing of the liquid components in certain proportion. The present invention has the advantages of no destruction on ozone layer, no toxicity, being inflammable and high thermal performance, and may be used directly in HFC-134a heat pump set, with the heat pump set being able to provide hot water of about 80 deg.c.

Description

technical field [0001] The invention relates to a mixed refrigeration working medium used in a medium-high temperature water source heat pump unit, in particular to a heat pump working medium which does not destroy the ozone layer at all (that is, the ozone destruction potential ODP=0). Background technique [0002] Water source heat pump technology uses geothermal water, groundwater, surface water (river water, lake water, sea water), industrial waste water and other low-temperature and low-level thermal energy resources, and adopts the principle of heat pump to transfer low-level heat energy to high-level heat energy through a small amount of electric energy input, so as to realize power supply. An energy-saving and environmentally friendly technology for heating and cooling. The water source heat pump has the characteristics of high efficiency and energy saving, stable and reliable operation, remarkable environmental benefits, and one machine with multiple functions. Bec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/04
Inventor 史琳昝成朱明善韩礼钟董明孟富春
Owner TSINGHUA UNIV
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