The paper gives a progress report on a theoretical study of film condensation in microchannels. The model takes account of surface tension, vapor shear stress and gravity. The effect of channel shape is investigated for condensation of R134a in channels with cross sections: square, triangle, inverted triangle, rectangle with longer side vertical and rectangle with longer side horizontal. The case considered here is where the channel wall temperature is uniform and the vapor is saturated at 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 vapor mass flux, one vapor temperature and one wall temperature.
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ASME 3rd International Conference on Microchannels and Minichannels
June 13–15, 2005
Toronto, Ontario, Canada
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4185-5
PROCEEDINGS PAPER
Film Condensation in Horizontal Microchannels: Effect of Channel Shape Available to Purchase
Huasheng Wang,
Huasheng Wang
Queen Mary University of London, London, UK
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John W. Rose
John W. Rose
Queen Mary University of London, London, UK
Search for other works by this author on:
Huasheng Wang
Queen Mary University of London, London, UK
John W. Rose
Queen Mary University of London, London, UK
Paper No:
ICMM2005-75260, pp. 729-735; 7 pages
Published Online:
November 11, 2008
Citation
Wang, H, & Rose, JW. "Film Condensation in Horizontal Microchannels: Effect of Channel Shape." Proceedings of the ASME 3rd International Conference on Microchannels and Minichannels. ASME 3rd International Conference on Microchannels and Minichannels, Parts A and B. Toronto, Ontario, Canada. June 13–15, 2005. pp. 729-735. ASME. https://doi.org/10.1115/ICMM2005-75260
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