Energy-saving and environment-friendly mixed refrigerant with temperature application range of -17 to -42 DEG C

A technology of mixed refrigerant and application range, applied in the field of heat pump and refrigeration, can solve the problems of waste of resources, elimination, and high cost, and achieve the effect of improving efficiency, low cost of transformation, and reducing irreversible loss of heat transfer.

Active Publication Date: 2020-04-17
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] (2) R134a is a substitute for R12 (excellent thermal performance, but relatively poor environmental protection performance, which has been eliminated), but the cost of R134a product itself is high, and when using this product to replace R12, it is necessary to vigorously transform the original R12 equipment, resulting in an increase in the cost of the entire refrigeration equipment, a great waste of resources, and the future

Method used

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  • Energy-saving and environment-friendly mixed refrigerant with temperature application range of -17 to -42 DEG C
  • Energy-saving and environment-friendly mixed refrigerant with temperature application range of -17 to -42 DEG C
  • Energy-saving and environment-friendly mixed refrigerant with temperature application range of -17 to -42 DEG C

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Embodiment Construction

[0023] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0024] The mixed refrigerant provided by the invention uses octafluoropropane (R218) and sulfur hexafluoride (R846) as raw materials, both of which have an ODP value of 0. Generally, fluorocarbons are not compatible with lubricating oils, and the amount of oil needs to be strictly adjusted when selecting them as working fluids. After we add R846 to R218, the oil solubility of R218 can be increased, which reduces the mixed refrigerant in the equipment to a certain extent. possibility of leakage.

[0025] In the present invention, the mixing ratio of R218 and R846 is selected by the experimental data analysis method, specifically:

[0026] Weigh R218 and R846, do 36 sets of experiments in the regenerative mixed working fluid throttling heat pump system with different mass ratios, and then combine the experimental data with the refrigerant ...

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Abstract

The invention discloses an energy-saving and environment-friendly mixed refrigerant with a temperature application range of -17 to -42 DEG C. The mixed refrigerant is formed by mixing 91.83 wt% of R218 and 8.17 wt% of R846. The mixed refrigerant has the following advantages: (1) when the mixed refrigerant is used for replacing CFC, the heating performance of a system can be remarkably improved, and the structure of existing equipment does not need to be substantially changed; (2) the mixed refrigerant is a non-azeotropic mixed refrigerant, temperature slippage exists in the phase change process, the efficiency of heat pump circulation and refrigeration circulation can be improved, and the mixed refrigerant is very suitable for being applied to a variable-temperature heat source; (3) the R846 is added, so the oil solubility of the R218 can be improved, and the possibility of leakage of the mixed refrigerant in equipment is reduced to a certain extent; (4) the ODP value of the mixed refrigerant is 0, and the mixed refrigerant has no destructive effect on the ozone layer of the atmosphere; and (5) the mixed refrigerant can be widely applied to heat pumps, air conditioners and refrigeration equipment.

Description

technical field [0001] The invention relates to a refrigerant, in particular to an energy-saving and environment-friendly mixed refrigerant with a temperature application range of -17°C to -42°C, belonging to the technical field of heat pumps and refrigeration. Background technique [0002] In the field of heat pumps and refrigeration, refrigerants are essential. With the increasing demand for air conditioners, refrigerators and other equipment, the demand for refrigerants is also growing rapidly. There are various types of refrigerants with their own characteristics, and their selection has an important impact on the environment. Both the Montreal Protocol and the Kyoto Protocol have specified the destructive effect of Freon on the ozone layer and its impact on the greenhouse effect, and have made corresponding regulations on the emissions of ozone-depleting substances (such as chlorofluorocarbons) and carbon dioxide emissions. . Internationally, more and more attention h...

Claims

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Application Information

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IPC IPC(8): C09K5/04
CPCC09K5/045C09K5/047C09K2205/22C09K2205/34Y02P20/10
Inventor 李俊峰额热艾汗任玉成李洁汪秋刚刘生宝江煜魏震陈翠忠李靖杜可清
Owner SHIHEZI UNIVERSITY
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