Baseline Solar Dynamic System Figure 4 shows a sketch of a solar dynamic system. The solar flux is concentrated by the parabolic mirror into a receiver/storage unit. The working fluid of the engine cycle is heated up by passing the receiver, drives the engine and its connected alternator, and cools down while flowing through the radiator before being recompressed in the compressor. A latent heat storage system where the storage medium is melted during the sunphase and solidified during eclipse turned out to be an optimal solution for this application, e.g. [4], The storage is integrated with the receiver. Size, mass and design of the power conversion unit (engine, alternator, radiator and compressor) is determined solely by its overall efficiency T|pcu and the required electrical power output Pel- If collector and receiver/storage are able to deliver a continuous thermal power of Pel/RPCU t0 the PCU, it is not affected by the changing insolation conditions and consequently PCU mass and design do not depend on the orbit altitude nor inclination. Size and mass of the collector are determined by the relative eclipse time tECL/tORB, because it has to collect the energy
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