Theoretical and Experimental Heat and Mass Transfer Analysis for a Falling Film Outside a Grooved Tube |
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| Authors: | C Onan DB Ozkan |
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| Institution: | 1. Department of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkeyconan@yildiz.edu.tr;3. Department of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkey |
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| Abstract: | The heat and mass transfer from a grooved tube is investigated experimentally for a falling-film flow. The experiments are conducted on a helical trapezoidal grooved tube at three temperatures of the feeding water: 30°C, 35°C, and 40°C. The Reynolds number (Re) of the air ranges between 1,500 and 3,500. Nusselt number (Nu) is expressed as a function of the Prandtl number (Pr), Re for air (Rea), Re for water (Rew); Sherwood number (Sh) is expressed as a function of the Schmidt number (Sc), Rea, and Rew, and the correlation coefficients are determined. |
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| Keywords: | heat transfer mass transfer evaporation horizontal tube falling film groove |
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