Volumetric Heat-Transfer Coefficients for Direct-Contact Evaporation

[+] Author and Article Information
R. C. Smith, W. M. Rohsenow, M. S. Kazimi

Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, Mass. 02139

J. Heat Transfer 104(2), 264-270 (May 01, 1982) (7 pages) doi:10.1115/1.3245082 History: Received June 29, 1981; Online October 20, 2009


An analytical model has been developed for calculating volumetric heat-transfer coefficients for direct-contact evaporation. Heat transfer is modeled using single droplet correlations for the Nusselt number, while the fluid dynamics are described by a drift-flux model. The analysis is divided into a preagglomerative and a postagglomerative stage on the basis of an assumed maximum value for the dispersed phase volume fraction. The analytical results showed good agreement with data obtained from an experimental direct-contact evaporator using cyclopentane and water.

Copyright © 1982 by ASME
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