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Natural convection condensation heat transfer of carbon dioxide on a vertical surface in the subcritical region.

Author(s) : ISHIHARA I., MATSUMOTO R.

Summary

A very low difference of density between vapour and liquid causes that the buoyancy becomes comparable to the gravity force, so that the flow velocity of condensate decreases. A small value of latent heat makes the amount of condensate very large. This results in a thick layer of condensate film and a decrease of heat transfer coefficient. On the contrary, as the temperature approaches the critical temperature, the surface tension decreases sharply and becomes zero. This restrains the above decrease of the heat transfer coefficient. The paper describes the experimental results of heat transfer in connection with the condensation phenomena and discusses the effect of the length of the condensing surface on condensation heat transfer.

Details

  • Original title: Natural convection condensation heat transfer of carbon dioxide on a vertical surface in the subcritical region.
  • Record ID : 1997-0144
  • Languages: English
  • Source: Proceedings of the 2nd European Thermal-Sciences (EUROTHERM) and 14th UIT National Heat Transfer Conference 1996.
  • Publication date: 1996/05/29
  • Document available for consultation in the library of the IIR headquarters only.

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