Numerical Modeling Of The Steady-State 2-Phase Closed Thermosiphon

    Authors

    Z. J. Zuo;F. S. Gunnerson

    Comments

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    Abbreviated Journal Title

    Int. J. Heat Mass Transf.

    Keywords

    Thermodynamics; Engineering, Mechanical; Mechanics

    Abstract

    The steady-state performance of the gravity-assisted, two-phase, closed thermosyphon was modeled from first principles. Liquid-film momentum advection and axial normal stress, typically neglected by previous investigators, were included and shown to be important to the thermosyphon performance. The model presented also expanded previous analyses to include both temperature and heat-flux controlled thermosyphons and thermosyphons with mixed or other external boundary conditions. Numerical techniques were incorporated to solve the nonlinear governing equations and respective boundary conditions. A series of thermosyphon experiments were conducted. Predictions from the model agree well with experimental results. The parametric effects of operating temperatures, geometry, working fluid inventory and condenser thermal capacity were studied. The model presented could be used for optimization studies and design of thermosyphons.

    Journal Title

    International Journal of Heat and Mass Transfer

    Volume

    37

    Issue/Number

    17

    Publication Date

    1-1-1995

    Document Type

    Article

    Language

    English

    First Page

    2715

    Last Page

    2722

    WOS Identifier

    WOS:A1994PM81400011

    ISSN

    0017-9310

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