Solar thermal power plant
A solar thermal power plant or thermosolar power plant is an industrial facility in which solar radiation is used to generate electricity. Solar radiation is used to heat a fluid. Using fluid, taking advantage of the laws of thermodynamics, the necessary power is produced to move an alternator to generate electrical energy as in a classic thermoelectric power station.
Operation of a solar thermal power station
In order to raise the water temperature to the desired high levels, the maximum solar radiation must be concentrated at one point. In this way, temperatures of 300 ° C to 1000 ° C can be obtained. The higher the temperature, the higher the thermodynamic performance of the solar thermal power plant.
The capture and concentration of solar rays are made by means of automatically oriented mirrors that point to a central tower where the fluid is heated, or with smaller parabolic geometry mechanisms. The set of the reflective surface and its orientation device is called a heliostat.
There are several fluids and thermodynamic cycles used in the experimental configurations. The cycles used range from the Rankine cycle (used in nuclear power plants, coal thermal power plants) to the Brayton cycle (natural gas power plants). It has also made many other varieties such as the Stirling engine. The most used cycles are those that combine solar thermal energy with natural gas.
Last review: June 22, 2017