R422A refrigerant is an HFC mixture that serves as a substitute for R22, R502 and HCFC-containing refrigerant mixtures (R402A, R402B, R409A) in low temperature commercial and industrial refrigeration systems with direct evaporation. It is also used in medium temperature systems.
According to the F-gas Regulation, the high GWP value 3134 (> 2500) means that R422A can no longer be used after the year 2020.
R422A refrigerant applications and use
R422A has still served as a replacement in older R22 plants – primarily refrigeration and freezer systems in commercial outlets. R422A and f.ex. R290 can be used to convert R502 systems without the need to change out the mineral oil (The Linde Group, 2016).
R422A refrigerant price
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Read/load publication from academia.edu /Applied Thermal Engineering: