Heat Loss and Evaporation Rate from an Agitated Water Tank

Publisher:
AGH University of Science and Technology Press
Publication Type:
Conference Proceeding
Citation:
Proceedings of the 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, 2009, pp. 1207 - 1214
Issue Date:
2009-01
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ABSTRACT. Experiments have been performed to investigate the heat loss and evaporation rate from an open-top tank of heated water that is also agitated vigorously by air bubbling through it. High consumption of electrical energy in heating the solutions for an electroplating process prompted this study; and the experimental set-up thus serves as a model for an electroplating tank in this process. Air is injected from the tanks floor, and an electrical heater is used to maintain water at a constant, elevated temperature, compensating the heat being lost to the surroundings. A heat transfer model is developed for the process and is seen to agree well with measurements. Waters evaporation rate is found to be proportional to the injected air flow rate, and that most of the supplied energy goes into evaporating the water.
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