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Current Development Status of HFC-134a for Automotive Air Conditioning
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English
Abstract
HFC-134a is the refrigerant of choice to replace CFC-12 in automotive air conditioning. The purpose of this bulletin is to communicate the current test status of HFC-134a for use in new automotive air conditioning systems. It expands on the SAE Technical Paper (#890305)-“Performance Comparison of HFC-134a and CFC-12 in an Automotive Air Conditioning System” presented by Du Pont at the 1989 SAE International Congress and Exposition. Topics covered in this paper include:
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Environmental Impact
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Refrigerant Properties
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Heat Transfer
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Refrigeration Performance
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Materials Compatibility
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Hoses
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Elastomers
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Desiccants
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Metals
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Lubricants
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Solubility
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Lubricity
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Based on the test work completed, HFC-134a is not a “drop-in” replacement for CFC-12 in most existing systems. Depending on the system, certain design modifications may be required to achieve optimum performance and durability. The significant conclusions from this study are listed on page 12.
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Citation
Bateman, D., "Current Development Status of HFC-134a for Automotive Air Conditioning," SAE Technical Paper 900213, 1990, https://doi.org/10.4271/900213.Also In
References
- McLinden M. O. et. al “Measurement and Formulation of the Thermodynamic Properties of Refrigerants 134a (1,1,1,2-Tetrafluoroethane) and 123 (1,1-Dichloro-2,2,2-Trifluoroethane)”
- Eckels S. J. Pate M. B. Iowa State University “An Experimental Comparison of Evaporation and Condensation Heat Transfer Coefficients for HFC-134a and CFC-12” International Journal of Refrigeration
- Elbourini Refki Calsonic “Summer 1989 High Temperature Road Evaluation-CFC-12 vs. HFC-134a” International Conference on CFC and Halon Alternatives October 10 11 1989
- Provost Mitchell J. Arrieta Edward M. Sanden International (USA), Inc. “A Thermodynamic Analysis of Alternative Refrigerants in Vapor-Compression Refrigeration Cycles” 1990 SAE Exposition
- Weigand James J. Sanden International (USA), Inc. “Testing of R-134a Compared with R-12 with Vehicle in Environmental Test Chamber” 1989 IMACA Trade Show
- Bateman D. J. E. I. du Pont de Nemours SAE Paper No. 890305 “Performance Comparison of HFC-134a and CFC-12 in an Automobile Air Conditioning System”