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

    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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