The combined cycle efficiency is more sensitive to maximum and minimum temperatures of the system than to the temperature at which heat is transferred from the mercury cycle to the organic cycle. The sensitivity of the binary cycle efficiency to the component efficiency of the turbines is also important. A mass sensitivity analysis done for solar dynamic systems indicates that specific mass depends primarily on the solar receiver and heat rejection radiator masses and has a minimum for a given heat rejection temperature. The minimum specific masses are estimated at 62 and 40 kg/kW(e) depending whether a heavy or light solar receiver concept is used. The light solar receiver concept presented herein relies on the geomery of the cavity and the configuration of the boiler tubes instead of heat pipes for proper heat flux distribution and it therefore has less mass. Boiling is done in the region of high heat flux, while superheating and charging the thermal energy storage is done on the region of reflected, diffuse solar radiation, where the heat flux is low.


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    Title :

    Binary mercury/organic Rankine cycle power systems


    Additional title:

    Binaere Quecksilber/organische Rankine-Kreislauf-Kraftsysteme


    Contributors:
    Fox, A. (author) / Louis, J.F. (author) / Greenlee, W.J. (author) / Parker, G.H. (author)


    Publication date :

    1987


    Size :

    6 Seiten, 6 Bilder, 8 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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