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Dorin Approves New Refrigerants
2017/06/22
Dorin has conducted internal and external tests on four hydrofluoroolefin (HFO) blends, R449A, R448A, R513A, and R450A, in order to verify efficiency, economy, and retrofit capabilities on existing plants, and has now approved all four refrigerants. These refrigerants are non-flammable and non-toxic, and are classified in safety group A1.
 
The refrigerant R449A has been authorized as a substitute for R404A and R507A. It is a mixture of R32 (24. 3%), R125 (24.7%), R1234yf (25.3%), and R134a (25.7%), with a global warming potential (GWP) of 1,397.
 
The refrigerant R448A is de-signed to replace R404A and R22. It has the same components as R449A with the addition of a small amount of R1234ze: R32 (26%), R125 (26%), R1234yf (20%), R134a (21%), and R1234ze (7%). It has a GWP of 1,273.
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