Four new refrigerant awaiting approval from ASHRAE

in the face of the trend of global cuts in higher GWP value HFCs, seeking safe alternative refrigerants has become a high-stakes game.

more low GWP value refrigerants are increasingly emerging, ANSI/ASHRAE 34 - the United States Of the 2013 standard put forward four kinds of new refrigerants. They are mixed refrigerants R459A, R459B, R460A and R460B.

　　ANSI/ASHRAE 34- 2013 'standard of refrigerant naming and classification of safety' are introduced according to the toxicity and flammability data for rapid naming and refrigerant distribution security category.

R459A and R459B R32 two refrigerant contains different components and HFOs refrigerant R1234yf and R1234ze ( E) 。 These two kinds of refrigerants for specific application field has not been mentioned, but similar mixture has been as a substitute for R410A refrigerant. The two mixtures are A2L class 'micro combustible material. R459A mixture R32, R1234yf and R1234ze ( E) Respectively is 68%, 26% and 6%. R459B refrigerants including the same material, but the proportion is different, the R32:21%, R1234yf: 69%, R1234ze ( E) : 10%.

R460A and R460B, belongs to the class A1, non-toxic and nonflammable. Their components including R32, R125, everything and R1234 ze ( E) 。 R460B more similar to LTR4X refrigerants development, future plans for r404a and R22 refrigerant replacement. R460B components including R32:28%, R125:25%, 20% and R1234ze everything: ( E) : 27%. R460A refrigerant components is different: R32:12%, R125:52%, everything: 14%, R1234ze ( E) : 22%.

in the face of the trend of global cuts in higher GWP value HFCs, seeking safe alternative refrigerants has become a high-stakes game. In early 2016, at least 80 species of high GWP value has been put into use or alternative refrigerants are testing, at the same time, there are more new products are in research and development. Surprisingly, ASHRAE records show that since 1993, the different classification of refrigerants application application has more than 200. Although not all products are successful or final applications, some of them have been abolished at the same time, but the total number is still growing.

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