The Organic Rankine Cycle Solar Dynamic Power System (ORC SDPS) is an attractive candidate for power generation on the Space Station. The ORC SDPS consists of a concentrator, a power conversion unit, and a receiver with a thermal energy storage system. Excess thermal energy must be stored during the period of solar insolation to power the ORC engine during orbital eclipse. Various thermal energy storage materials were considered and Lithium Hydroxide (LiOH) was selected as a primary material. Its melting point is in the range desirable for the ORC SDPS working fluid (toluene) and it has one of the highest specific thermal energy storage capacities and a low volume change upon fusion. Alternate phase change materials are also being evaluated. The criteria used in designing the thermal energy storage system is presented and discussed. Salts generally have poor thermal conductivities which result in poor heat transfer within the thermal energy storage system. Therefore, potential heat transfer enhancement schemes were identified and evaluated. A brief discussion of a material compatibility study is presented. Conclusions and recommendations are made, identifying the need of future work.


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    Title :

    Thermal energy storage for an organic rankine cycle solar dynamic powered space station


    Additional title:

    Thermische Energiespeicherung fuer eine solardynamisch versorgte Raumstation mit organischem Rankine-Zyklus


    Contributors:


    Publication date :

    1985


    Size :

    13 Seiten, 10 Bilder, 3 Tabellen, 9 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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