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A cost-based method for comparing alternative refrigerants applied to R22 systems.

Author(s) : DOUGLAS J. D., BRAUN J. E., GROLL E. A., TREE D. R.

Type of article: Article, IJR article

Summary

This paper describes the development and application of a general purpose method for comparing alternative refrigerants. The method utilizes a single performance index based upon minimum cost for a simplified system operating with a given cooling capacity and efficiency. The cost-based method is an improvement over other methods for evaluating refrigerants in that it more appropriately considers the influence of both thermodynamic and transport properties on refrigerant choice and it allows consideration of additional cost associated with some replacements (e.g. safety features for flammable refrigerants). A computer model based upon this method was used to evaluate the performance of several leading R22 replacement candidates for window air conditioners. Primarily, the cost differences between alternative refrigerants are associated with the heat exchangers and the refrigerant/oil requirements. The cost differences associated with different compressor displacement requirements were found to have a minor influence on overall cost differences. For the optimized systems, all of the alternatives had systems costs that were within about 4% of those for R22. Further, the differences between most of the alternative refrigerants were smaller than the uncertainties in the analysis.

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Pages: 107-125

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Details

  • Original title: A cost-based method for comparing alternative refrigerants applied to R22 systems.
  • Record ID : 1999-2131
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 22 - n. 2
  • Publication date: 1999/03

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