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Vehicle Testing: Retrofitting Mobile Air Conditioning Systems with HFC-134a
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Abstract
The air conditioning systems of a fleet of sixteen (16) globally distributed vehicles have been retrofit to HFC-134a and ester-based lubricants. The variables of a generic flush-type retrofit procedure have been systematically changed. The effects of compressor condition (new or pre-conditioned), desiccant type (re-used XH-5 or new XH-7), evacuation times, and charge of mineral oil and HFC-134a were examined, in an attempt to better understand the significance of these specific variables on performance and durability of mobile air conditioning systems under retrofit conditions. Initial performance, measured qualitatively by cooling performance and quantitatively by compressor clutch cycling, is judged to be acceptable. Additional information will be provided, as available, on long-term durability of these systems.
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Citation
Dekleva, T., Colmery, S., Corr, S., Ax, H. et al., "Vehicle Testing: Retrofitting Mobile Air Conditioning Systems with HFC-134a," SAE Technical Paper 930230, 1993, https://doi.org/10.4271/930230.Also In
References
- Dekleva T. W. Colmery S. H. Bresnahan J. D. Corr S. Lindley A. A. “Retrofitting Mobile Air Conditioning Systems with HFC-134a - an Update,” 1992 CFC & Halons Alternatives Conference Washington, D.C. September 30 1992
- Colmery S. H. Corr S. Dekleva T. W. Goodwin E. J. Gregson R. D. Halse A. Lindley A. A. Yost R. W. “Retrofitting Mobile Air Conditioning Systems with HFC-134a,” 1991 International CFC & Halon Alternative Conference Baltimore, MD December 4 1991
- Colmery S. Corr S. Dekleva T. Goodwin E. Gregson R. Halse A. Lindley A. Yost R. “Ester Lubricants for use with HFC-134a Retrofit Applications,” Climate Control Part 2 of 3, Seminar Session PC11B, 1992 SAE International Congress and Exposition Detroit, MI February 25 1992
- Colmery S. Corr S. Dekleva T. Goodwin E. Gregson R. Halse A. Lindley A. Yost R. “Retrofitting Mobile Air Conditioning Systems with HFC-134a,” Climate Control Session, Part 2, 1991 SAE Passenger Car Meeting & Exposition Nashville, TN September 18 1991
- “Emkarate RL Refrigeration Lubricants,” ICI Chemicals & Polymers, Ltd. 1992
- Wheeler Donald J. “Understanding Industrial Experimentation,” Statistical Process Controls, Inc. 7026 Shadylane Drive, Knoxville, TN 1988
- Corr S. Gregson R. D. Halse A. Lindley A. A. Dekleva T. W. “Retrofitting Mobile Air Conditioning Systems: The First Alternative,” Parts 1&2, Climate Control Sessions 1 & 3, 1991 SAE International Congress and Exposition Detroit, Michigan February 26-27 1991
- Watkins C. “Retrofitting Mobile Air Conditioning Systems - a Manufacturer's Perspective,” 1992 CFC & Halons Alternatives Conference Washington, D.C. September 30 1992
- Manz K. “Survey of Residual Refrigerant-12 in Vehicle Air Conditioners Retrofit to R-134a,” 1992 CFC & Halons Alternatives Conference Washington, D.C. September 30 1992
- Azami K. Hosoi H. Takahashi M. Takahashi T. “Possible Compressor Problems in Handling HFC-134a for Car Air Conditioning Systems,” Climate Control Session, 1991 SAE Passenger Car Meeting & Exposition Nashville, TN September 18 1991 SAE Paper 911929
- Powers C. Rosen S. “Compatibility Testing of Various Percentages of R-12 in R-134a and PAG Lubricant,” 1992 CFC & Halons Alternatives Conference Washington, D.C. September 30 1992
- Cohen A. “Update on Molecular Sieve Desiccant Compatibility for Retrofit of Automotive Air-Conditioners with R-134a and Ternary Blend Refrigerants,” 1991 International CFC & Halon Alternative Conference Baltimore, MD December 4 1991
- Cohen A. “Desiccants for Use in Mobile Air Conditioning Systems,” 1992 CFC & Halons Alternatives Conference Washington, D.C. September 30 1992
- Dekleva T. W. Colmery S. H. Bresnahan J. D. Corr S. Lindley A. A. “Retrofitting Mobile Air Conditioning Systems with HFC-134a - an Update,” 1992 SAE Worldwide Passenger Car Conference & Exposition Dearborn, Michigan October 1 1992