Proposed Method for Measuring Local Heat Transfer Coefficients of Isothermal Surfaces

[+] Author and Article Information
T. Kumada

Department of Nuclear Engineering, Hokkaido University, Sapporo 060, Japan

J. Heat Transfer 111(4), 858-863 (Nov 01, 1989) (6 pages) doi:10.1115/1.3250797 History: Received September 29, 1987; Online October 20, 2009


A method has been proposed for measuring local heat transfer coefficients. The method uses the change of a wet surface temperature by radiation heating and can be applied to isothermal conditions and with large variations of the local heat transfer coefficients along the surface of a body. The present method is based on the heat balance equation, which expresses a simple relationship between humidity and wet-bulb temperatures. An experiment was devised to measure the local heat transfer coefficient along a flat plate. The results confirmed the effectiveness of the present method to measure local and overall heat and mass transfer coefficients with reasonable accuracy.

Copyright © 1989 by ASME
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