1-Parabolic Trough collector
Several hundred mirrors are positioned around a tower.
These mirrors are called « heliostats » are Located on the ground are adjustable. The sun’s rays are thus permanently reflected towards a single point at the top of the tower. Solar radiation is directly focused on an absorber that transforms radiation into heat at high temperatures.
Generally, a heat transfer fluid (molten salts) circulates at the top of the tower. Heated by the rays, this one transfers its energy to a circuit of water. The steam then produced drives a turbine that produces electricity.
3-Linear Fresnel Reflectors
Similar to a parabolic trough CSP system, a Linear concentrating collector field consists of a large number of collectors in parallel rows. These are typically aligned in a north-south orientation to maximize annual and summer energy collection. The mirrors are laid flat on the ground and reflect the solar radiation to the pipe above. Like trough and tower, Fresnel can also incorporate storage in a power block, or generate steam for direct use.