Mathematical modeling of the geometrical sizing and thermal performance of a Dish/Stirling system for power generation

The results obtained for a concentrator with a diameter of 10.5 [m] and solar irradiation of 1000 W/m2 are: theoretical maximum working temperature in the receiver surface of 1596 K and a maximum thermal efficiency of 68%. It is observed that for collectors between 10 and 20 m of diameter, the overall efficiency variation is not significant (23-25%), since the variation of the temperature of the receiver and the thermal losses in the cavity are minimal for the evaluated conditions.