SOLAR THERMODYNAMIC Solar Thermodynamic transforms solar energy into electrical power using the same operating principle as a normal solar thermal panel, by converting solar energy indirectly into

Electrical energy through two distinct phases of energy transformation:
The first phase consists of transforming solar energy into the thermal energy (heat) of a thermo-vector fluid; the second phase consists of transforming thermal energy into electricity using a conventional thermodynamic cycle.

The difference is that the thermo-vector fluid in a solar thermodynamic system reaches temperatures in the order of 600°C, compared to 110°C for a thermal panel. A solar thermodynamic installation uses a series of parabolic mirrors to concentrate the sun’s rays on a tube which crosses its focal plane. The thermal fluid circulates in this tube. The effect of the concentration of solar rays allows the temperature in the tube to reach approximately 600 °C. The fluid is allowed to circulate and accumulate in a boiler, where a coil exchanges heat with water. The high temperature generates saturated steam, which powers a turbine that drives an alternator, which in turn produces electricity.

Various systems exist for capturing solar energy.

Currently, technologies developed to collect and concentrate solar radiation in a thermo-vector fluid are classified based on the system of direct solar energy gain:
  • Parabolic Trough linear solar collectors;
  • Solar Dish Stirling circular collectors;
  • Solar Tower mirror field installations;
  • Linear Fresnel Reflector solar installations.

To build a thermodynamic solar installation, a request must be sent to the GSE authority in order to verify the definitive project’s conformity beforehand, even if it is a hybrid installation.
Within 90 days of receiving this request, the GSE authority carries out a preliminary inspection of conformity for the project, in compliance with the legislative decree dated April 11, 2008, subsequently notifying the applicant of the installation’s admissibility to the incentive system.