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Compatibility of R1234yf and R134a and lubricants used in automotive compressors.

Number: pap. 2645

Author(s) : CAMPO C., SOLANO C., KENT S., et al.

Summary

Understanding the compatibility of system materials with HFO-1234yf and corresponding compressor lubricants is critical to long term operation of mobile air conditioning systems. Today's regulatory climate of reporting and eliminating system leaks leaves very little margin of error when approving elastomeric materials to seal compressor and tube connection joints over the lifetime of the system. Polymeric O-ring materials and metals used in several automotive compressor manufacturers have been tested in accelerated conditions to determine volume change, strength change, extraction of plasticizers or dyes, and chemical compatibility of the lubricant and refrigerant. Additionally, information on the effects of water and air contamination on system lifetime are critical to allow OEs and service techs to design proper construction and service methodologies. This study focuses on the use of polymers with PAG lubricants with HFC-134a and HFO-1234yf, and with the effects of air and water on POE in HFC-134a and HFO-1234yf with standard metal catalysts. Results and conclusions are presented in graphical and tabular format along with conclusions on polymeric types and metals that are suited for continued development as long-term system sealing and functional life.

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Pages: 8

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Details

  • Original title: Compatibility of R1234yf and R134a and lubricants used in automotive compressors.
  • Record ID : 30024702
  • Languages: English
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

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