Evaporation of macrolayer in nucleate boiling near burnout

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The mechanism of nucleate boiling heat transfer near burnout has been investigated by studying the evaporation of the liquid macrolayer underneath the vapor mass. It is proved that heat conduction across the macrolayer and evaporation at the free surface is not a mode efficient enough to account for the major portion of heat transfer. The alternative model proposed is a macrolayer primarily consumed through evaporation of much thinner microlayers at the bottom of vapor stems penetrating the macrolayer. Analysis based upon the proposed mechanism shows that the macrolayer does not totally dry out in a vapor-mass cycle before boiling crisis. Other mechanisms accountable for the consumption of the macrolayer are also discussed.

Original languageEnglish
Pages (from-to)1531-1538
Number of pages8
JournalInternational Journal of Heat and Mass Transfer
Volume30
Issue number7
DOIs
StatePublished - Jul 1987

Fingerprint Dive into the research topics of 'Evaporation of macrolayer in nucleate boiling near burnout'. Together they form a unique fingerprint.

Cite this