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A unified model for the prediction of bubble detachment diameters in boiling systems— I. Pool boiling

✍ Scribed by L.Z. Zeng; J.F. Klausner; R. Mei

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
780 KB
Volume
36
Category
Article
ISSN
0017-9310

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✦ Synopsis

A

new model is proposed for the prediction of vapor bubble departure diameters in saturated pool boiling. The model utilizes a force balance which follows a similar form as that used by Klausner et al. (ht. J. Heat Mass Transfir 36, 651-662 (1993)) for flow boiling. The vapor bubble growth rate is a necessary input to the model, and its reliable estimation is required to predict accurately departure diameters. The model has been tested over the following range of conditions : pressure, 0.02-2.8 bar ; Jakob number, 4-869; and gravity, la.014 g. It is demonstrated that over the wide range of boiling data considered the departure diameter predicted using the present model is significantly improved over existing correlations.

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