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RESEARCH PAPERS

Measurement of Condensation Curves for Dropwise Condensation of Steam at Atmospheric Pressure

[+] Author and Article Information
I. Tanasawa

Institute of Industrial Science, University of Tokyo, Minato-ku, Tokyo, Japan 106

Y. Utaka

Department of Mechanical Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan 152

J. Heat Transfer 105(3), 633-638 (Aug 01, 1983) (6 pages) doi:10.1115/1.3245632 History: Received June 21, 1982; Online October 20, 2009

Abstract

Condensation curves for dropwise condensation of steam at atmospheric pressure were measured for the range of surface subcooling between 0.5 and 180 K using a heat transfer block having a concave spherical condensing surface. The heat transfer coefficient remained constant with the increase of surface subcooling up to about 10 K, and then it decreased. The maximum heat fluxes were found to be between 9.3 and 12.2 MW/m2 . Dropwise condensation could be observed at a surface subcooling larger than the one corresponding to the peak heat flux, but shortly the mode of condensation shifted to pseudo-film or on-ice condensation.

Copyright © 1983 by ASME
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