Deprimes occuring in capillary pumped loops (CPLs) with small-diameter evaporator pumps (≤ 16 mm) were examined analytically and experimentally. The proposed deprime mechanism advanced by this paper is nucleation of a pressurized vapor bubble that can blow through the evaporator wick and lead to immediate CPL deprime or unstable operation with a likelihood of deprime at a later time. This failure mechanism is exacerbated by the presence of a non-condensible gas species like hydrogen in the ammonia working fluid. Use of a robust startup evaporator to empty the normal vapor spaces of the remaining CPL evaporators prior to startup is identified as the most effective method for obviating this failure mechanism and ensuring reliable CPL operation.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Deleterious Effects of Non-Condensible Gas During Capillary Pumped Loop Startup


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Antoniuk, D. (Autor:in) / Pohner, J. (Autor:in)

    Kongress:

    International Conference On Environmental Systems ; 1994



    Erscheinungsdatum :

    1994-06-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Capillary Pumped Loop Startup: Effects of the Wick Fit on Boiling Incipience

    Jean L. Joly / Marc Miscevic / Vincent Platel et al. | AIAA | 2003


    Startup Time Reduction in an Electrohydrodynamically Enhanced Capillary Pumped Loop

    B. Mo / M. M. Ohadi / S. V. Dessiatoun et al. | AIAA | 1999



    Experimental Investigation of Reducing Startup Time on Capillary Pumped Loop with EHD Assistance

    Mo, B. / Ohadi, M. M. / Dessiatoun, S. V. et al. | British Library Conference Proceedings | 1998


    Capillary Pumped Loop Modeler

    Ku, Jentung / Itkin, Elliot / Schweickart, Russell B. et al. | NTRS | 1990