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Heat transfer characteristics of CO2 in spirally grooved tubes.

Author(s) : KOYAMA S., KUWAHARA K.

Summary

Recently, from the viewpoint of grovel environmental protection, the development of high-performance heat pump and refrigeration systems using naturally occurring substances, such as CO2, NH3, i-C(4)H(10), as working fluids has become the most important challenge. Therefore, the authors have investigated the heat transfer characteristics of CO2 in spirally grooved tubes experimentally. This paper deals with ow group's experimental research concerning the forced convection cooling heat transfer of CO2 in the supercritical pressure range and the flow boiling heat transfer of CO2 in the subcritical pressure range inside several microfin tubes.

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Pages: pp. 60-68

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Details

  • Original title: Heat transfer characteristics of CO2 in spirally grooved tubes.
  • Record ID : 2010-0729
  • Languages: English
  • Source: ACRA-2009. The proceedings of the 4th Asian conference on refrigeration and air conditioning: May 20-22, 2009, Taipei, R.O.C.
  • Publication date: 2009/05/20

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