Boiling stability characteristics of porous surface

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)287-293
Journal / PublicationJournal of the Chinese Institute of Chemical Engineers
Volume29
Issue number4
Publication statusPublished - Jul 1998
Externally publishedYes

Abstract

This study numerically investigates the stability characteristics of methanol boiling on a smooth or a porous-layer coated heated surface. 'Equilibrium heat flux' describes the relative stability between nucleate and film boiling modes over a nonuniformly heated surface with or without a porous layer. In addition, the equal-area criterion is extended from a surface covered entirely by the same boiling curve to a surface having two different boiling curves. Nucleate boiling mode is relatively more stable than that on a smooth surface. Moreover, coating a porous layer on boiling surface not only enhances nucleate boiling, but also introduces a safer operation.

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