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TECHNICAL PAPERS: Phase Change and Multiphase Heat Transfer

Falling Film and Spray Evaporation Enhancement Using an Applied Electric Field

[+] Author and Article Information
J. Darabi, M. M. Ohadi, S. V. Desiatoun

Thermal Miniaturization/Enhanced Heat Transfer Laboratory, Department of Mechanical Engineering, University of Maryland, College Park, MD 20742

J. Heat Transfer 122(4), 741-748 (Apr 10, 2000) (8 pages) doi:10.1115/1.1288932 History: Received July 03, 1999; Revised April 10, 2000
Copyright © 2000 by ASME
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References

Minton, P. E., 1986, Handbook of Evaporation Technology, Noyes Publications, Park Ridge, NJ.
Bochirol,  L., Bonjour,  E., and Weil,  L., 1960, A Echanges thermiques “Etude de l’Action de Champs Electriques sur les Transferts de Chaleur dans les Liquides Bouillants,” C. R. Hebd. Seances Acad. Sci., Paris 250, pp. 76–78.
Choi, H. Y., 1962, “Electrohydrodynamic Boiling Heat Transfer,” Ph.D. thesis, Massachusetts Institute of Technology, Cambridge, MA.
Winer, M., 1967, “An Experimental Study of the Influence of Nonuniform Electric Field on Heat Transfer in a Dielectric Fluid,” TRW Systems Report, Report No. EM17-14.
Zhorzholiani,  A. G., and Shekriladze,  I. G., 1972, “Study of the Effect of an Electrostatic Field on Heat Transfer With Boiling Dielectric Fluids,” Heat Transfer-Sov. Res., 4, No. 4, pp. 81–98.
Jones,  T. B., 1978, “Electrohydrodynamically Enhanced Heat Transfer in Liquids—A Review,” Adv. Heat Transfer, 14, pp. 107–148.
Ohadi,  M. M., 1991, “Heat Transfer Enhancement in Heat Exchangers,” ASHRAE J., 3, No. 12, pp. 42–50.
Yabe, A., 1991, “Active Heat Transfer Enhancement by Applying Electric Fields,” Proceedings of the Third ASME/JSME Thermal Engineering Conference, Vol. 3, ASME, New York, pp. xv–xxiii.
Panofsky, W. K. H., and Phillips, M., 1962. Classical Electricity and Magnetism, Addison-Wesley, Reading, MA, p. 110.
Kline,  S. J., and McClinock,  F. A., 1953, “Describing Uncertainties in Single Sample Experiments,” Mech. Eng. (Am. Soc. Mech. Eng.), 75, No. 1, pp. 3–8.
Moffat,  R. J., 1988, “Describing the Uncertainties in Experimental Results,” ASME J. Fluids Eng., 107, pp. 250–260.
Yamashita,  K., and Yabe,  A., 1997, “Electrohydrodynamic Enhancement of Falling Film Evaporation Heat Transfer and its Long Term Effect on Heat Exchanger,” ASME J. Heat Transfer, 119, pp. 339–347.
Darabi J., Ohadi, M. M., and Dessiatoun, S. V., 1998, “Heat Transfer Enhancement With Falling Film Evaporation on Vertical Tubes Using Electric Fields,” Proceedings of the ASME Heat Transfer Division, Vol. 1, ASME, New York, pp. 331–38.

Figures

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The effect of electric field on the film distribution
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Schematic of the experimental setup
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Schematic of the test chamber
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Schematic of the vertical plate test section
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Schematic of the vertical tube test section
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Schematic of the electrodes tested
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Schematic illustration indicating the falling film and spraying modes
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Effect of heat flux on heat transfer coefficient for the falling film case
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Effect of electrode spacing on heat transfer coefficient for the falling film case
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Effect of heat flux on heat transfer coefficient for the spraying case
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Effect of flow rate on heat transfer coefficient for the spraying case
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Heat transfer coefficient versus applied voltage on a smooth tube and a slitted electrode
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Enhancement factor versus applied voltage on a smooth tube and a tubular electrode
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Enhancement factor versus applied voltage on a Turbo Bill tube and a slitted electrode
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Enhancement factor versus applied voltage on a 19 fpi tube and an IWF electrode

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