Three high conductance Loop Heat Pipes (LHPs) for the Geostationary Imaging Fourier Transform Spectrometer (GIFTS) were designed, fabricated and thermal vacuum tested. One LHP with ammonia working fluid was designed for heat removal from a cryocooler cold head. Two ethane LHPs were designed to reject heat from the aft and fore optics to space. Thermal performance tests were performed in a vacuum chamber with attached masses simulating actual components. Thermal tests were also conducted on the bench and in an environmental chamber. The following features of the GIFTS LHPs were observed: (a) reliable startup and steady state operation with conductance as high as 83W/°C at various temperatures; (b) precision temperature control using compensation chamber heater during thermal cycling. Heat input power and condenser temperatures were varied periodically, while evaporator was maintained at a constant temperature. Temperature of the evaporator heat input surface fluctuated only by a fraction of a degree; (c) in addition there was no thermal performance degradation after 16 month of storage. The LHPs are installed on the instrument and waiting for a launch platform.


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    Titel :

    High Conductance Loop Heat Pipes for Space Application


    Beteiligte:
    Semenov, Sergey Y. (Autor:in) / Cho, Wei‐Lin (Autor:in) / Jensen, Scott M. (Autor:in) / El-Genk, Mohamed S. (Herausgeber:in)

    Kongress:

    SPACE TECH.& APPLIC.INT.FORUM-STAIF 2006: 10th Conf Thermophys Applic Microgravity; 23rd Symp Space Nucl Pwr & Propulsion; 4th Conf Human/Robotic Tech & Nat'l Vision for Space Explor.; 4th Symp Space Coloniz.; 3rd Symp on New Frontiers & Future Concepts ; 2006 ; Albuquerque, New Mexico (USA)


    Erschienen in:

    Erscheinungsdatum :

    20.01.2006


    Format / Umfang :

    7 pages





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    High Conductance Loop Heat Pipes for Space Application

    Semenov, S. Y. / Cho, W.-L. / Jensen, S. M. et al. | British Library Conference Proceedings | 2006


    Variable-Conductance Heat Pipes

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    High heat flux loop heat pipes

    North, M. T. | British Library Online Contents | 1997


    High heat flux loop heat pipes

    North, M. T. / European Space Agency | British Library Conference Proceedings | 1997


    High Heat Flux Loop Heat Pipes

    North, M. T. / Sarraf, D. B. / Rosenfeld, J. H. et al. | British Library Conference Proceedings | 1997