Experimental Study of Enhanced Pool Boiling Heat Transfer Using Graphite Foam Inserts

Abstract:

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This paper presents the results of an experimental study of heat transfer in a pool boiling evaporator with porous insert. Different types of graphite foams were tested with the phase change coolant FC-72 in a designed thermosyphon. Comparisons between the graphite foams and a solid copper block show that the porous structure enhances pool boiling significantly. The boiling thermal resistance of the tested graphite foams was found to be about 2 times lower than that of the copper block. The bubble formation recorded by a high speed camera indicates that boiling from a graphite foam is more vigorous than from a copper block. The designed thermosyphon with graphite foam insert can remove heat fluxes of up to 112 W/cm2 with the maximum heater temperature maintained below 100°C.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 312-315)

Edited by:

Andreas Öchsner, Graeme E. Murch and João M.P.Q. Delgado

Pages:

352-357

DOI:

10.4028/www.scientific.net/DDF.312-315.352

Citation:

K.C. Leong et al., "Experimental Study of Enhanced Pool Boiling Heat Transfer Using Graphite Foam Inserts", Defect and Diffusion Forum, Vols. 312-315, pp. 352-357, 2011

Online since:

April 2011

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Price:

$35.00

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