Theoretical analyses on boiling critical heat flux with porous media |
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| Authors: | L. H. Chai D. S. Wen |
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| Affiliation: | (1) School of Environmental Science and Engineering Tianjin University, Tianjin, 300072, China;(2) Department of Engineering Science, Oxford University, Parks Load, OX1 3PJ UK |
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| Abstract: | Porous media has been widely applied to enhance boiling heat transfer in industry, especially for increasing the value of critical heat flux (CHF). Two cases were considered in the paper: boiling within porous bed and boiling above on porous coatings. For boiling within porous bed, simplified Rayleigh–Taylor stability was analyzed and parametric effects of porous media on boiling critical heat flux were revealed. For boiling above on porous coatings, a simple new critical heat flux model was proposed basing on the analysis of liquid film stability and parametric effect of porous coatings on CHF was elaborated. |
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| Keywords: | Critical heat flux Porous media Boiling heat transfer |
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