Optical fibres for a mini-dish/Stirling system: thermodynamic optimization

A thermodynamic optimization of a solar mini-dish/stirling system is presented. The solar collector heat losses by convection and radiation are diminished by using optical fibres to transport concentrated solar energy. We analyse an absorber-heater for the solar heat engine to ensure the reduction of the heat losses using the first law and the second law. Taking into account internal and external irreversibilities for the solar heat engine, the optimal operating temperature and the overall efficiency of the system are established.

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