Vapor Compression Heat Pumps with Refrigerant Mixtures

Amidst tightening requirements for eliminating CFC�s, HCFC�s, halons, and HFC�s from use in air conditioning and heat pumps, the search began for replacements that are environmentally benign, non-flammable, and similar to the banned refrigerants in system-level behavior. Refrigerant mixtures are increasingly used as working fluids because they demonstrate desirable thermodynamic, feasibility, and safety characteristics.

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