The Heat Engine Technology Development Program was awared to Sundstrand Energy Systems by NASA-Lewis Research Center as part of the Space Station Advanced Development Program. Task Order 1 covered the design, fabrication, instrumentation, calibration, assembly, checkout, and endurance operation of a dynamic test loop to evaluate the thermal stability of an organic Rankine cycle (ORC) working fluid, toluene, for potential application to the Space Station power conversion unit (PCU). Samples of the noncondensible gases and the liquid toluene were taken periodically during the 3410 hour test at 750 F peak temperature. These were analyzed to determine what degradation products were formed and the quantity of these products. The results obtained from the toluene stability loop verify that toluene dgradation will not lead to a loss of performance over the 30-year Space Station mission life requirement. The identity of the degradation products and the low rates of formation were as expected from toluene capsule test data. Toluene was also shown to be tolerant to limited overtemperature exposure. This paper describes the experiment and presents the test results.


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    Title :

    Toluene stability space station Rankine power system


    Additional title:

    Stabilitaet des Toluens fuer das Rankine-Kraftsystem der Raumstation


    Contributors:
    Havens, V.N. (author) / Ragaller, D.R. (author) / Sibert, L. (author) / Miller, D. (author)


    Publication date :

    1987


    Size :

    6 Seiten, 7 Bilder, 5 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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