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Performance of a finned-tube evaporator optimized for different refrigerants and its effect on system efficiency.

Author(s) : DOMANSKI P. A., YASHAR D., KIM M.

Type of article: Article, IJR article

Summary

This paper presents a comparable evaluation of R600a (isobutane), R290 (propane), R134a, R22, R410A, and R32 in an optimized finned-tube evaporator, and analyses the impact of evaporator effects on the system COP. The study relied on a detailed evaporator model derived from NIST's EVAP-COND simulation package and used the ISHED1 scheme employing a non-Darwinian learnable evolution model for circuitry optimization. In the process, 4500 circuitry designs were generated and evaluated for each refrigerant. The obtained evaporator optimization results were incorporated in a conventional analysis of the vapour compression cycle. For a theoretical cycle analysis without accounting for evaporator effects, the COP spread for the studied refrigerants was as high as 11.7%. For cycle simulations including evaporator effects, the COP of R290 was better than that of R22 by up to 3.5%, while the remaining refrigerants performed approximately within a 2% COP band of the R22 baseline for the two condensing temperatures considered.

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Pages: 820-827

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Details

  • Original title: Performance of a finned-tube evaporator optimized for different refrigerants and its effect on system efficiency.
  • Record ID : 2005-2536
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 28 - n. 6
  • Publication date: 2005/09

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