High Gain Antenna Gimbal (HGAG) for the rover Perseverance of the Mars 2020 mission
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Gemasolar is the first commercial plant in the world to use the high temperature tower receiver technology together with molten salt thermal storage of very long duration.
Gemasolar is a 19.9 MWe thermosolar power plant with 120 MWt molten salt central receiver. Solar field of 310,000 m2 mirror surface. Solar thermal energy collected and stored in molten salts for 15 hours of production, and steam turbine with 3 pressure levels.
The heliostats set up around the tower refl ect and concentrate solar energy onto the molten salt receiver located at the top of the tower. In the receiver, solar energy is transferred to the molten salts circulating inside, which reach a temperature of 565 ºC. By means of a steam generation system, the molten salts produce overheated steam, that runs a turbine/alternator group to generate electrical energy which then is fed into the power grid. The Gemasolar plant design has been optimised using the SENSOL, a programe developed by Sener that defines the heliostats positioning in the solar field.
The 115 m2 heliostats designed by Sener incorporate a mechanism that accurately positions the surface of the reflective glass. The molten salt receiver, one of the most important components of this technology, has been developed by Sener with the collaboration of CIEMAT.
The molten salt system stores the excess thermal energy produced during daylight hours and provides the energy required to ensure the plant can remain operational for up to 15 hours without sunlight.
Gemasolar is able to produce 80 GWh per year, generate enough power to supply 27,500 households and reduce by more than 28,000 tons per year the CO2 emissions.
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