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  • Analysis of loop heat pipe performance under varying wick load
    Reis, A.H. ; Miguel, António F. ; Aydin, Murat
    Loop heat pipes (LHP) are heat transfer devices used to enhance cooling of small spaces and basically consist of sealed tubes connecting a heat source, the evaporator, whose major part is a porous ... wick, with a condenser that operates as heat sink. In this paper we analyse the effect of curvature of theliquid vapor interface upon the vapor pressure within wick pores. We show how this effect affects start-up by requiring a difference between wick and condenser temperatures as higher as wick pore width becomes smaller. We analysed also transient operation and found that idealy LHP are self-adjustingsystems that tend to stable operation. We present a formula to describe the transient regime. The analysis provides also optimization of wickpore width for maximum heat transfer. Optimal pore width is shown to vary with temperature difference between wick and condenser. It is envisaged how this feature may help in LHP design.
    Vir: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Letn. 51, št. 7/8, 2005, str. 451-455)
    Vrsta gradiva - članek, sestavni del
    Leto - 2005
    Jezik - angleški
    COBISS.SI-ID - 8653339

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    Digitalna knjižnica Slovenije - dLib.si

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