Trifluoroiodomethane-containing mixed refrigerant

A mixed refrigerant, trifluoroiodomethane technology, applied in the field of mixed refrigerants containing trifluoroiodomethane, can solve the problem of high GWP value, achieve the effect of improving safety and reducing flammability

Inactive Publication Date: 2010-09-08
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the widely used mixed alternative working fluids are R410A and R407C. The ODP values ​​of both are zero, which meets the protection requirements for the ozone layer, but the GWP value is very high.

Method used

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  • Trifluoroiodomethane-containing mixed refrigerant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take trifluoromethyl iodide, 1,1,1,2-tetrafluoroethane and propane for physical mixing at room temperature to obtain a safe and environmentally friendly mixed refrigerant. In the mixed refrigerant, the concentration of trifluoromethyl iodide is 1% by weight, the concentration of 1,1,1,2-tetrafluoroethane is 40% by weight, and the concentration of propane is 59% by weight.

Embodiment 2

[0018] Take trifluoromethyl iodide, 1,1,2,2-tetrafluoroethane and propylene to physically mix at room temperature to obtain a safe and environmentally friendly mixed refrigerant. In this mixed refrigerant, the concentration of trifluoromethyl iodide is 1% by weight, the concentration of 1,1,2,2-tetrafluoroethane is 24% by weight, and the concentration of propylene is 75% by weight.

Embodiment 3

[0020] Take trifluoromethyl iodide, 1,1,2,2-tetrafluoroethane and propane for physical mixing at room temperature to obtain a safe and environmentally friendly mixed refrigerant. In the mixed refrigerant, the concentration of trifluoromethyl iodide is 10% by weight, the concentration of 1,1,2,2-tetrafluoroethane is 20% by weight, and the concentration of propane is 70% by weight.

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Abstract

The invention relates to a trifluoroiodomethane-containing mixed refrigerant. The trifluoroiodomethane-containing mixed refrigerant is prepared by mixing component 1, a component 2 and a component 3, wherein the component 1 is trifluoroiodomethane with the combustion and explosion inhibiting effect; the component 2 comprises 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane or mixture of the 1,1,1,2-tetrafluoroethane and 1,1,2,2-tetrafluoroethane; the component 3 comprises propane, propylene or mixture of the propane and propylene; in the mixed refrigerant, the content of the component 1 is between 1 and 10 weight percent; the content of the component 2 is between 20 and 40 weight percent; the content of the component 3 is between 50 and 75 weight percent; the ODP value of the mixed refrigerant is zero; the GWP value is far less than that of a routine HFCs work substance; and the trifluoroiodomethane-containing mixed refrigerant has good lube intersolubility, can directly substitute an R22 working substance without making large alteration on a refrigeration system; and as the mixed refrigerant has the combustion inhibiting component, the combustibility of the refrigerant is greatly reduced or even the refrigerant is completely incombustible so that the safety of the refrigeration system is greatly improved.

Description

Technical field [0001] The invention belongs to the field of refrigerants, and particularly relates to a mixed refrigerant containing trifluoromethyl iodide. Background technique [0002] R22(HCFC22, CHF 2 Cl) is a refrigerant widely used in air-conditioning systems with very good thermal performance and high efficiency. However, with the discovery of the ozone layer destruction mechanism and the greenhouse effect, R22 has been included in the ranks of phase-out due to its ODP (ozone depletion potential) value and higher GWP (global warming potential) value. [0003] There are currently two main types of alternative working fluids for R22: one is natural working fluids, such as hydrocarbons (HCs), with zero ODP and very low GWP, but it has strong flammability; the other is synthetic hydrogen Fluorocarbons (HFCs), such as R134a, etc., have zero ODP and are not as flammable as HCs. Some HFCs have a flame retardant effect, but have high GWP and have problems with lubricant solubility...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
Inventor 吴剑峰公茂琼董学强
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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