Attributed to its high heat transfer coefficient, evaporating cooling involving the use of micro heat exchangers is considered a possible thermal management solution for cooling of high heat flux electronic devices. The present work desires to develop high-performance micro heat exchangers operating in the evaporation regime. The pool boiling heat transfer performance on one plain plate and one micro porous coated plate were tested in a vertical open and a 1-mm confined spaces. The test results show that the heat transfer was enhanced by the confined space at low and moderate heat fluxes but degraded at high flux condition on plain surface. The micro porous coating may significantly enhance the pool boiling performance. However, the heat transfer characteristic in confined space is not exactly the same as that on open surfaces. Owing to the interaction of forced removal of the superheated liquid due to the bubble departure and retard the departure of bubbles by the confined plate, there is no much difference for pool boiling heat transfer on micro porous coated surface in confined and unconfined spaces at low and moderate heat fluxes. At high heat flux, large amount of bubbles were confined by the cover plate. This caused the partial dry out and significant degrade on heat transfer performance.
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ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels
June 23–25, 2008
Darmstadt, Germany
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4834-5
PROCEEDINGS PAPER
Pool Boiling Heat Transfer on Vertical Micro Porous Coated Surface in Confined Space
Chien-Yuh Yang,
Chien-Yuh Yang
National Central University, Chung-Li, Taiwan
Search for other works by this author on:
Chien-Fu Liu
Chien-Fu Liu
National Central University, Chung-Li, Taiwan
Search for other works by this author on:
Chien-Yuh Yang
National Central University, Chung-Li, Taiwan
Chien-Fu Liu
National Central University, Chung-Li, Taiwan
Paper No:
ICNMM2008-62241, pp. 621-626; 6 pages
Published Online:
June 11, 2009
Citation
Yang, C, & Liu, C. "Pool Boiling Heat Transfer on Vertical Micro Porous Coated Surface in Confined Space." Proceedings of the ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. Darmstadt, Germany. June 23–25, 2008. pp. 621-626. ASME. https://doi.org/10.1115/ICNMM2008-62241
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