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Film condensation in horizontal microchannels: effect of channel shape.

Author(s) : WANG H. S., ROSE J. W.

Type of article: Article

Summary

The paper gives a progress report on a theoretical study of film condensation in microchannels. The model takes account of surface tension, vapour shear stress and gravity. The effect of channel shape is investigated for condensation of R-134a in channels with cross sections: square, triangle, inverted triangle, rectangle with longer side vertical, rectangle with longer side horizontal and circle. The case considered is where the channel wall temperature is uniform and the vapour is saturated at the inlet. For a given mass flux, the local condensate film profile around the cross section is calculated together with the mean heat-transfer coefficient at different distances along the channel. Results are presented here for one vapour mass flux, one vapour temperature and one wall temperature. [Reprinted with permission from Elsevier. Copyright, 2006].

Details

  • Original title: Film condensation in horizontal microchannels: effect of channel shape.
  • Record ID : 2007-0557
  • Languages: English
  • Source: International Journal of thermal Sciences - vol. 45 - n. 12
  • Publication date: 2006/12

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