Experimental analysis of the local heat transfer coefficient of falling film evaporation with and without co-current air flow velocity |
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Authors: | H. Louahlia-Gualous L. El. Omari P. K. Panday E Artioukhine |
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Affiliation: | (1) CREST, FEMTO ST, CNRS UMR 6174, UTBM-UFC, 2 avenue Jean Moulin, 90000 Belfort, France |
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Abstract: | This paper presents the experimental results of the local heat transfer for falling film evaporation of water sheet by solving the inverse heat conduction problem. It is shown that the local heat transfer coefficients increase by increasing the air flow velocity, the film liquid flow rate or decreasing the inlet bulk film temperature. Correlations for the mean heat transfer coefficients in the absence of superimposed flow for the stagnation region, the thermally developed region and the bottom of the heated cylinder are proposed. |
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Keywords: | Evaporation Falling films Inverse heat conduction Local heat transfer |
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