1990-09-01

Lubricant Screening for HFC-134a Car Air Conditioning Compressor Reliability 901735

Certain important factors must be considered when the current refrigerant for automotive air conditioning systems, (A/C), is changed from CFC12 to the ozone safe HFC134a. This paper will focus on lubricant compatibility by presenting a screening process which will cover:
  • a screening table of essential physical properties
  • general information on types of available lubricants
  • tests of chemical stability
  • lubricity
  • compatibility with elastomers
  • methods for testing compressor durability
  • service engineering

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