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International Heat Transfer Conference 3

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)


A. P. Hatton
Faculty of Technology, University of Manchester Institute of Science and Technoiogy, ENGLAND

I. S. Hall
Faculty of Technology, University of Manchester, England

DOI: 10.1615/IHTC3.1130
pages 24-37


The results of experiments described in Section I on the influence of surface roughness and reduced pressure on nucleate pool boiling show that bubble departure size and frequency are strongly influenced by the nucleating cavity size. A row of cavities was therefore produced along a stainless steel rod and the diameters were measured. Sections II and III describe theoretical predictions and measurements using 0 cine photography of the bubble departure sizes and frequencies with nucleate boiling at different pressures from these artificial cavities. The theoretical models which are proposed include the cavity size as an important variable and give good agreement with the experimental values of the boiling parameters.

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