Nonflammable, Nonozone Depleting, Refrigerant Mixtures Suitable for Use in Mineral Oil
نویسندگان
چکیده
In many cases, polyol ester (POE) and polyalkylene glycol (PAG) lubricants used with HFC refrigerants, may cause long-term reliability and stability problems. Mineral oil lubricants are much more stable in the long run and do not suffer from stability problems nearly as much as POE and PAG lubricants. HFC based refrigerants and blends are, in general, nonmiscible in mineral oils, and will not return the lubricant to the compressor, making mineral oil lubricants unsuitable for HFC refrigerants. This paper discusses a family of nonflammable, nonozone depleting, mixtures of refrigerants that may be substituted for HCFC-22, R-407C, R-417A, R-502, R-500, CFC-12, R-404A, HFC-134a, and others, as working fluids in airconditioning and refrigeration systems allowing mineral oil to be used as the lubricant.
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