A preliminary design and analysis study has been conducted to compare three different solar dynamic power cycles for application to expected missions beyond the Initial Operational Capability (IOC) Space Station. The Solar Dynamic Power System Definition (SDPSD) Study Contract, sponsored by the NASA Lewis Research Center (LeRC), compared Closed Brayton Cycle (CBC), Stirling cycle, and alkali-metal Rankine cycle dynamic power systems. Results of the study indicate that stirling cycle power systems wil have higher performance and will be smaller than the CBC power system. At a power level of 35 kWe, the concentrator is 13 percent smaller, the radiator is 40 percent smaller, and total weight is 18 percent less than for the CBC power system. Also, LiF salt, which establishes peak cycle temperatures for both dynamic cycles at about 1090 K (1500 F), was found to be a superior material for Thermal Energy Storage (TES). The Rankine cycle, operated with alkali metals at 1375 K (2015 F) and higher, was not found to be competitive with either the Brayton cycle or the Stirling cycle.


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    Title :

    Advanced space solar dynamic power systems beyond IOC space station


    Additional title:

    Fortgeschrittene solardynamische Raumfahrt-Kraftsysteme fuer die IOC-Raumstation


    Contributors:
    Wallin, W.E. (author) / Dustin, M.O. (author)


    Publication date :

    1987


    Size :

    11 Seiten, 17 Bilder, 2 Tabellen, 6 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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