Title

Subcooled flow boiling in a microchannel with a pin fin and a liquid jet in crossflow

Authors

Authors

Y. Y. Wang;Y. Peles

Comments

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Abbreviated Journal Title

Int. J. Heat Mass Transf.

Keywords

Flow boiling; Pin fin; Microchannel; ONB; Nucleate boiling dominated; Jet in crossflow; Heat transfer enhancement; CRITICAL HEAT-FLUX; PRESSURE-DROP; CONVECTIVE FLOW; ARRAY; WATER; TUBE; Thermodynamics; Engineering, Mechanical; Mechanics

Abstract

This experimental study presents subcooled flow boiling of an engineering fluid - HFE-7000 - downstream a single pin fin in a microchannel. A liquid secondary jet was introduced into the flow to examine its merits pertinent to heat transfer enhancement. It was found that for HFE-7000 high wall superheats (Delta T-(sat,T-ONB) similar to 40 degrees C) were required for the onset of nucleate boiling (ONB). Once boiling started, nucleate boiling dominated. Heat transfer coefficient increased monotonically with heat flux, independent of mass flux and jet injections. Secondary flow injection, which was previously found to be an affective single phase heat transfer enhancement technique, showed limited potential for fully developed nucleate boiling. (C) 2015 Elsevier Ltd. All rights reserved.

Journal Title

International Journal of Heat and Mass Transfer

Volume

86

Publication Date

1-1-2015

Document Type

Article

Language

English

First Page

165

Last Page

173

WOS Identifier

WOS:000355029900018

ISSN

0017-9310

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