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Modelling and performance simulation of gas cooler for CO2 heat pump system.

Author(s) : CHANG Y. S., KIM M. S.

Summary

The outlet temperature of the gas cooler has a great effect on the efficiency of a carbon dioxide heat pump system. In order to obtain a small approach temperature difference at gas cooler, a near-counterflow type heat exchanger has been proposed, and larger heat transfer area is demanded. The optimum design of the gas cooler involving the analysis of trade-offs between the heat transfer performance and cost is desirable. In this study, a simulation model has been developed for the fin-tube type gas cooler, and the air-side heat transfer correlation has been proposed. A developed model was confirmed by experimental results. The effects of geometric parameters, such as the tube arrangement, transverse tube spacing, longitudinal tube spacing and the number of tube rows and fin spacing on the performance of heat transfer were investigated using the developed model. This study suggested various simulation results for the optimum design of a gas cooler.

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Details

  • Original title: Modelling and performance simulation of gas cooler for CO2 heat pump system.
  • Record ID : 2007-1741
  • Languages: English
  • Source: 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2006/07/17

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