Condensation Heat Transfer on Laminar, Falling Film

[+] Author and Article Information
V. D. Rao

Department of Chemical Engineering, Andhra University, Visakhapatnam-530003, India

P. K. Sarma

Department of Mechanical Engineering, Andhra University, Visakhapatnam-530003, India

J. Heat Transfer 106(3), 518-523 (Aug 01, 1984) (6 pages) doi:10.1115/1.3246709 History: Received June 02, 1983; Online October 20, 2009


The process of condensation of vapors on a laminar, falling film of immiscible liquid is formulated within the framework of certain assumptions for a laminar, two-film model. The numerical solutions are presented for a wide range of parameters, and it is observed that the dynamics of the falling film has a profound influence on the condensation heat transfer rates. The condensation heat transfer coefficient is found to be a function of the modified Graetz number, subcooling parameter, and the heat capacity ratio of coolant-to-condensate. Further, shorter liquid film lengths would yield considerably high condensation heat transfer rates in comparison with the Nusselt analysis.

Copyright © 1984 by ASME
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