A Constrained Vapor Bubble (CVB) formed in a 3×3×40  mm fused silica cell of square cross section was studied. This small-scale device is capable of transferring high heat flux using the latent heat of vaporization of liquid. Capillarity is the driving force to recirculate the working fluid. Experiments were conducted at different operating conditions to obtain the temperature profiles of the cell. The effect of low-level impurities was analyzed from a thermodynamic point of view. A two-dimensional model was developed to describe the temperature distribution in the evaporator of the CVB. An area averaged heat transfer coefficient was used to account for the complicated heat transfer mode on the inside wall of the cell. The results demonstrated that small amounts of a second component drastically affects the temperature distribution and heat transfer characteristics of the evaporation process due to distillation.


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    Titel :

    Experimental study and modeling of the effect of low-level impurities on the operation of the constrained vapor bubble


    Beteiligte:
    Huang, J. (Autor:in) / Karthikeyan, M. (Autor:in) / Plawsky, J. (Autor:in) / Wayner, P. C. (Autor:in) / El-Genk, Mohamed S. (Herausgeber:in) / Bragg, Mary J. (Herausgeber:in)

    Kongress:

    Space technology and applications international forum - 1998 ; 1998 ; Albuquerque,New Mexico (USA)


    Erschienen in:

    AIP Conference Proceedings ; 420 , 1 ; 446-451


    Erscheinungsdatum :

    15.01.1998


    Format / Umfang :

    6 pages





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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