Loop Heat Pipes (LHPs) have been base-lined for thermal management in the next generation of large communication satellites due to their ability to effectively transport energy using two-phase heat transfer. To incorporate LHPs in thermal design, a subroutine was developed to work with a nodal thermal analyzer for transient predictions of LHP operating temperatures. The thermal analyzer (e.g., SINDA or IDEAS/TMG) is used to advance the thermal solution in time, while the subroutine provides the time-varying fluid boundary conditions and adjusts thermal couplings by solving the conservation equations of mass, momentum and energy.The subroutine was exercised in conjunction with a nodal thermal analyzer to predict the fluid temperatures in a loop heat pipe during transient changes in power and sink temperature. A laboratory test was performed with an ammonia LHP to collect data for verifying the model. Presented in this paper is a description of the model and the test data used to examine the model’s prediction capability.


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    Title :

    Verification of a Transient Loop Heat Pipe Model


    Additional title:

    Sae Technical Papers


    Contributors:
    Wrenn, K. R. (author) / Allen, R. D. (author) / Krein, S. J. (author) / Hoang, T. T. (author)

    Conference:

    International Conference On Environmental Systems ; 1999



    Publication date :

    1999-07-12




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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