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An environmentally friendly mixed refrigerant

A mixed refrigerant and environmentally friendly technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve the problems of high GWP value, high flammability, poor refrigerant performance, etc., and achieve low temperature glide and good environmental performance , the effect of reducing flammability

Active Publication Date: 2021-05-04
ZHEJIANG XINGTENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The refrigerants disclosed in the above-mentioned patents have disadvantages such as that they cannot be directly filled into tanks and applied to the HCFC-22 system, or the GWP value is relatively high, or the performance of the refrigerant is worse than that of HCFC-22, or they are more flammable. Therefore, it is necessary to develop a better New refrigerants with cooling performance, better compatibility with existing systems, and better environmental performance

Method used

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  • An environmentally friendly mixed refrigerant

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Physically mix difluoromethane, 1,1-difluoroethane, trifluoroiodomethane, and propane at room temperature to obtain a new working fluid. In this mixed refrigerant, the mass ratio is: two Fluoromethane, 13%; 1,1-difluoroethane, 33%; Trifluoroiodomethane, 8%; Propane, 46%.

Embodiment 2

[0039] Physically mix difluoromethane, 1,1-difluoroethane, trifluoroiodomethane, and propane at room temperature to obtain a new working fluid. In this mixed refrigerant, the mass ratio is: two Fluoromethane, 15%; 1,1-difluoroethane, 31%; Trifluoroiodomethane, 8%; Propane, 46%.

Embodiment 3

[0041] Physically mix difluoromethane, 1,1-difluoroethane, trifluoroiodomethane, and propane at room temperature to obtain a new working fluid. In this mixed refrigerant, the mass ratio is: two Fluoromethane, 13%; 1,1-difluoroethane, 36%; Trifluoroiodomethane, 22%; Propane, 29%.

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Abstract

The invention discloses an environmentally friendly mixed refrigerant, comprising: component 1, the component 1 includes difluoromethane, and the mass fraction is 10% to 30%; component 2, the component 2 includes 1,1- Difluoroethane, the mass fraction is 29-40%; component 3, the component 3 includes trifluoroiodomethane, the mass fraction is 8%-38%; component 4, the component 4 includes propane and fluorine The mass fraction of ethane is 12%-47%, and the mass fraction of fluoroethane in component 4 is 0-33%. The environment-friendly mixed refrigerant of the invention has good environmental protection performance and lower flammability than mixed refrigerants of alkanes, olefins and ethers. In addition, the constituent working fluids of the environmentally friendly refrigerant of the present invention have the characteristics of mature production technology, convenience and easy availability, and are conducive to promotion and popularization.

Description

technical field [0001] The invention relates to a novel environment-friendly refrigerant replacing HCFC-22, in particular to a novel environment-friendly refrigerant replacing HCFC-22 in an air-conditioning system. Background technique [0002] From October 10th to 14th, 2016, the 28th Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer was held in Kigali, Rwanda. Carbon dioxide (HFCs) emissions, thereby preventing global warming by 0.5°C by the end of the 21st century. This agreement is another milestone important document after the "Paris Agreement". HCFC-22 is included in the phase-out due to its ODP (Ozone Depletion Potential) value and high GWP (Global Warming Potential) value. [0003] At present, the main substitute refrigerants for HCFC-22 are R410A, R417B and so on. Although their ODP value is 0, their GWP is still high and cannot meet the environmental protection requirements of GWP less than 150. As a single refrigerant, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/04
CPCC09K5/04
Inventor 陈晓军赵景平王章明吴燕涛
Owner ZHEJIANG XINGTENG CHEM