Hydrocarbons as Substitutes for Halogenated Refrigerants in Refrigerating Systems

ABSTRACT The paper deals with the use of R-290/600a (50/50) and R-600a, that are now considered as alternative to R-134a to substitute R-12 in domestic refrigeration. A theoretical analysis of the mixture performance shows that both hydrocarbon refrigerants may be used. Tests of certain hermetic compressors confrrm that the mixture can be used both for old and new equipment, while the isobutane must be used for new equipment only.