Green refrigerant for small commercial refrigerator

A refrigeration device and refrigerant technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of high condensation pressure, difficult condensation, high greenhouse effect index, etc., achieve low consumption, low cost, and reduce equipment The effect of cost

Inactive Publication Date: 2006-03-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"The patent uses R13I, R134a and CO 2 Mixed refrigerants are composed of R1270 (propylene), R170 (ethane) and R290 (propane) to replace R22. However, due to the composition of R13I and R134a, the mixed refrigerant also has a high greenhouse effect index, and due to CO 2 It is a supercritical gas at normal condensation temperature, not easy to condense, and the condensation pressure is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) The weight percentage of the preparation to be prepared is: 51%: 48.5%: 0.5%, which is used to replace R134a.

[0013] (2) The preparation method is: mixing strictly according to this ratio in the factory, then canning, and then filling.

[0014] (3) Implementation effect: The test results show that after the refrigerant mixed with this formula replaces R134a by perfusion, the cooling capacity is slightly lower than R134a, about 5%, and the COP is slightly higher than R134a, about 2%.

Embodiment 2

[0016] (1) The weight percentage of the preparation to be prepared is: 57%: 42.5%: 0.5%, which is used to replace R134a.

[0017] (2) The preparation method is: mixing strictly according to this ratio in the factory, then canning, and then filling.

[0018] (3) Implementation effect: The test results show that after the refrigerant mixed with this formula replaces R134a by perfusion, the cooling capacity is slightly higher than that of R134a, about 6%, and the COP is equivalent to that of R134a.

Embodiment 3

[0020] (1) The weight percentage of the preparation to be prepared is: 61%: 38.5%: 0.5%, which is used to replace R12.

[0021] (2) The preparation method is: mixing strictly according to this ratio in the factory, then canning, and then filling.

[0022] (3) Implementation effect: The test results show that after the refrigerant mixed with this formula replaces R12 by perfusion, the cooling capacity is slightly higher than that of R12, which is about 2% higher, and the COP is equivalent to that of R12.

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PUM

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Abstract

The green refrigerant for small commercial refrigerator includes propane 54 wt%, isobutane R600a 45.5 wt% and tetrahydrothiophene THT 0.5 wt% to replace R134a; or includes propane 61 wt%, isobutane R600a 38.5 wt% and tetrahydrothiophene THT 0.5 wt% to replace R12. The present invention has refrigerating performance similar to that of R134a and R12, but has no destruction on ozone layer and greenhouse effect similar to CO2. The green refrigerant has simple mixing process, low consumption, low cost only 1 / 20 that of R134a, easily detected leakage and safety for use in small refrigerator.

Description

technical field [0001] The invention relates to a medicament in the technical field of refrigeration, in particular to an environmentally friendly refrigerant used in small commercial refrigeration devices. Background technique [0002] CFCs and HCFCs refrigerants have a destructive effect on the ozone layer. The commonly used refrigerants R12 (Freon CFC12) and R22 (Freon HCFC22) have been eliminated or will soon be eliminated from the field of refrigeration and air conditioning. Now the refrigerants widely used in the field of refrigeration and air conditioning There are R134a (freon HFC134a), and HFC mixture refrigerants R404A (HFC125 / HFC143a / HFC134a), R407C (HFC32 / HFC125 / HCF134a), R410A (HFC32 / HFC125), etc. Although these refrigerants have no damage to the ozone layer, they All have a high greenhouse effect. With the increasing trend of global warming, these alternative refrigerants, which are considered long-term alternatives, are also facing the situation of being phase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
Inventor 陈江平刘敬辉
Owner SHANGHAI JIAO TONG UNIV
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