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Comparison investigation on the heat transfer characteristics for supercritical CO2 fluid and conventional refrigerants.

Author(s) : YANG J. L., MA Y. T., LIU S. C., et al.

Summary

The obvious characteristics of transcritical CO2 cycle are that the heat rejection process takes place in the supercritical region. The thermophysical properties of supercritical CO2 change dramatically with the temperature and pressure near the critical region. According to the characteristics of CO2 specific heat, the correlation of the pseudocritical temperature is obtained and the pseudocritical region is defined. The special properties variation of supercritical CO2 fluid makes its heat transfer performance different from the conventional fluids. From the view of properties analysis and quantitative comparison, it can be seen that the heat transfer performance of supercritical CO2 is equivalent to the condensation heat transfer of conventional refrigerants.

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Pages: 2006-2

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Details

  • Original title: Comparison investigation on the heat transfer characteristics for supercritical CO2 fluid and conventional refrigerants.
  • Record ID : 2008-0034
  • Languages: English
  • Source: 7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006). Proceedings
  • Publication date: 2006/05/29

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