Heat Pipe Technology: Volume 1. Fundamentals and Experimental Studies

ISBN Print: 0-8493-9921-1

EFFECTS OF HIGH INTERFACIAL SHEAR STRESS DUE TO COUNTERCURRENT VAPOR FLOW ON FILM CONDENSATION HEAT TRANSFER

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DOI: 10.1615/IHPC1990v1.270
pages 263-270

Frank M. Gerner Microscale Heat Transfer Laboratory, 692 Rhodes, Department of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati, Ohio 45221, USA

Chang-Lin Tien NEC Distinguished Professor of Engineering, Department of Mechanical Engineering, University of California, Berkeley, CA 94706, U.S.A.

Sinopsis

The heat transfer characteristics of a two-phase closed thermosyphon are experimentally investigated. Results indicate that, in the condenser, a large countercurrent vapor flow exerts a high interfacial shear stress upon the liquid film, which thickens the film and inhibits heat transfer. Both flat-plate and control-volume analyses predict similar results.

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