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Performance analysis of a jet cooling system using refrigerant mixtures.

Author(s) : BOUMARAF L., LALLEMAND A.

Type of article: Article, IJR article

Summary

A steady-state simulation program, for given temperatures of the sources, integrating simple models of each component has been developed. A Peng-Robinson equation of state assuming equality of the fugacities of the two phases was used to model the thermodynamic properties of the vapour and liquid-vapour equilibrium. The refrigerants investigated in this study are: the pure refrigerants R142b, R152a, RC318, R124, R134a, R22 and the binary refrigerants R22/RC318/, R22/R142b, R22/R124, R22/R152a, R22/R134a, R134a/R142b, R152a/R142b and R134a/R152a. Results show that the use of a binary mixture does not always increase the performance of system. Generally, when the mixture is mildly zeotropic (e.g. R22/RC318), the cooling efficiency of the system decreases. However, when the mixture is midly zeotropic (e.g. R134a/R142b) or almost azeotropic (e.g. R134a/R152a), efficiency and energetic efficiency increase.

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Pages: 580-589

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Details

  • Original title: Performance analysis of a jet cooling system using refrigerant mixtures.
  • Record ID : 2000-0076
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 22 - n. 7
  • Publication date: 1999/11

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