A general mathematical modelling for heat and mass transfer in unsaturated porous media: an application to free evaporative cooling |
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| Authors: | Associate Professor W Liu Dr S W Peng Professor K Mizukami |
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| Institution: | 1. Department of Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, PR China
2. Department of Mechanical Engineering, Ehime University, 790, Matsuyama, Japan
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| Abstract: | The present paper develops a general mathematical model with some improvements in mass, momentum and energy equations, which introduce more transport mechanisms to simulate simultaneous transfer of heat and mass in the porous media unsaturated with liquid. Numerical calculation results in two-dimension are obtained for the vertical packed bed with its right opening surface exposing to atmospherical environment. The calculating data can demonstrate the cooling effect of the water evaporation for the bed if it is used as a cooling wall of building for room air-conditioning in the hot and dry climate. |
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