Thermal solar systems can also be used to generate electricity. For this purpose, relatively high temperatures need to be achieved, which is achieved by collecting solar radiation in a small area or part of the collecting surface. The radiation is concentrated using special mirrors. In recent years, solar-powered systems with the technologies available in parabolic mirrors, solar power towers and solar discs have been able to make substantial contributions to the production of electricity from the sun. In all three of the above technologies, solar energy is concentrated at a specific point through a heating medium (water, oil, etc.), which is heated by a steam generator, which is then used for power generation by steam generators. These technologies are now mature and for the most part they are suitable for exploiting the very high solar potential of the Mediterranean countries.
Parabolic Mirrors
Parabolic tubular mirrors to gather sunlight into a transparent tube running through each vessel. The boat rotates during the day to keep the mirror focused, following the orbit of the sun. The liquid (oil) circulating in the pipe is heated and vaporized by means of a heat exchanger. Steam, in turn, supplies a steam turbine, which generates electricity. Power is supplied directly to the electricity grid, but its surplus is either stored in the form of heat to continue supply at night, or channeled to a nearby seawater desalination plant.
Solar disk
It uses a set of mirrors to reflect and concentrate sunlight on the receiver to achieve the temperature required for efficient heat conversion to work. This requires the disk to follow the sun on two axes. Concentrated radiation is absorbed by the receiver and transferred to a machine (usually a Stirling machine) converting heat directly into electricity.
