【 The popular science 】 Refrigerant R22 and R410A, which good?

< p> now commonly used in central air conditioning two different refrigerant R22 and R410A. But the average user doesn't know the difference between these two kinds of refrigerants, don't know which one to use good refrigerant. Below to learn about these two kinds of refrigerants. < / p> < p> < / p> < p> a, R22 and R410A is what? < / p> < p> 1, 2 fluorine R22 chemical called a methyl chloride, freon is a member of the family, as part of the hydrogen CFCS. < / p> < p> before the advent of R410A, mostly refrigerants of R22 used in air conditioning. Because of the refrigerant of the ozone layer has a great deal of harm, according to the regulations of the Montreal protocol, to fully eliminated by 2020. < / p> < p> 2, R410A is a kind of new refrigerants. < / p> < p> new refrigerant R410A composed of two kinds of quasi azeotropic mixture, mainly include hydrogen, fluorine and carbon element, has a stable, non-toxic, superior performance, etc. At the same time as a result of not containing chlorine, so will not react with ozone, which does not destroy the ozone layer. < / p> < p> in addition, the use of air conditioners in terms of performance of new refrigerant will also have certain to improve. R410A is by far the most appropriate internationally recognized to replace R22 refrigerant, and in Europe and the United States, Japan and other countries. < / p> < p> < / p> < p> 2, why do you want to replace R22 with R410A? < / p> < p> 1, R410A belongs to low toxicity, display burning transmissibility. < / p> < p> 2, R410A ozone depletion coefficient is 0, the ozone depletion coefficient of R22 to 0. 05. < / p> < p> 3, when using R410A system than the total heat transfer characteristics of R22, so can improve system efficiency, and reduce heat exchanger heat transfer area. < / p> < p> < / p> < p> the different characteristics of the three, R410A and R22 < / p> < p> 1, R410A by HFC - 32 ( R32) And HFC - 125 to 50% lighter than the mixture of cold media, for nearly azeotropic mixture refrigerant. But for a single material refrigerant R22. < / p> < p> 2 working pressure is higher than R22, R410A about 50 ~ 70%. < / p> < p> 3 is larger than that of R22, R410A vapor density. The system of the same capacity, the refrigerant mass flow rate is the same. Because of the gas piping are the same diameter, so R410A steam flow rate compared with about 30% slower R22. < / p> < p> < / p> < p> < / p>
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