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Carbon dioxide based fluoric series coolant

A carbon dioxide and refrigerant technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of aggravating the global warming effect and emission restrictions, and achieve good cooling effect, no pollution cost, and easy to obtain results.

Inactive Publication Date: 2008-04-16
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the emission of chlorofluorocarbons will aggravate the earth's greenhouse effect, and its emission should also be limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The refrigerant is based on carbon dioxide and mixed with R134a (1,1,1,2-tetrafluoroethane), wherein the mass percentage of carbon dioxide is 10%. The mass percent content of R134a (1,1,1,2-tetrafluoroethane) is 90%.

[0018] Evaporation pressure (Mpa)

Embodiment 2

[0020] The refrigerant is based on carbon dioxide, mixed with R134a (1,1,1,2-tetrafluoroethane) and R152a (1,1-difluoroethane), wherein the mass percentage of carbon dioxide is 5%, R134a The mass percentage content is 45%, and the mass percentage content of R152a is 50%.

[0021] Evaporation pressure (Mpa)

Embodiment 3

[0023] The refrigerant is based on carbon dioxide, mixed with R134a (1,1,1,2-tetrafluoroethane) and RC318 (octafluorocyclobutane), wherein the mass percentage of carbon dioxide is 15%, and the mass percentage of R134a is 40%, the mass percentage content of RC318 is 45%.

[0024] Evaporation pressure (Mpa)

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PUM

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Abstract

The invention discloses a carbon dioxide-based fluoric series freezing medium to replace all kinds of freon freezing media. The freezing medium of the invention is based on carbon dioxide and is mixed with one or more than one of R134a (1, 1, 1, 2-tetrafluoro thane), R152a (1, 1-difluoroethane), RC318 (octafluorocyclobutane), wherein, the mass percentage of carbon dioxide in the mixture is between 5 to 20 percent. The invention is characterized by innocuity, non-pollution, non-corrosion, no public nuisance and uninflammability.

Description

technical field [0001] The invention relates to an environmentally friendly green refrigerant that replaces the currently used freon refrigerant, in particular refers to a carbon dioxide-based fluorine-based (in particular, various fluoroalkane) refrigerants, which can be applied to various large, medium and small refrigerating units, Household refrigerators, air conditioners, freezers and other refrigeration equipment. Background technique [0002] The impact of refrigeration technology on modern society is very obvious, and it has developed into an indispensable and important part of people's life. Nowhere, nowhere. At present, Freon refrigerants are widely used at home and abroad. Studies in recent years have proved that after the leakage or discharge of chlorofluorocarbon compounds in Freon refrigerants, they will decompose under the action of strong solar ultraviolet radiation and release chlorine atoms after rising to the stratosphere (stratosphere) with the airflow....

Claims

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Application Information

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IPC IPC(8): C09K5/04
Inventor 龚光彩王立平王瑞
Owner HUNAN UNIV
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