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Performance of HC and HFC refrigerants in a finned-tube evaporator and its effect on system efficiency.

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

Summary

The paper presents a comparable evaluation of isobutane (R600a), propane (R290), R134a, R22, R410A, and R32 in an optimized finned-tube evaporator, and analyzes 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. 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 within approximately a 2% COP band of the R22 baseline for the two condensing temperatures considered.

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Pages: 2004-2

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Details

  • Original title: Performance of HC and HFC refrigerants in a finned-tube evaporator and its effect on system efficiency.
  • Record ID : 2005-2453
  • Languages: English
  • Source: Natural Working Fluids 2004: 6th IIR-Gustav Lorentzen Conference
  • Publication date: 2004/08/01

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