THE SOLAR FIELD,
THE BEATING HEART OF THE CSP SYSTEM
The solar field usually consists of a series of base modules (100m long) called SCA (Solar Collector Assembly) connected together for the circulation of the heat transfer fluid.
Each SCA is made up primarily of parabolic cylinder collectors comprising:
– REFLECTIVE PANELS
– SUPPORTING STRUCTURES
– SYSTEM FOR HANDLING THE STRUCTURES WITH MIRRORS
– RECEIVER TUBES
Solar radiation is reflected in the focus position by the mirrors where the receiver tube is, with a concentration comparable to 100 times the power of the Sun.
The heat transfer fluid that goes through receiver tubes heats up to 550 °C. Each SCA can rotate following the motion of the sun. The axis of rotation is positioned, preferably, from North to South. Therefore the SCA “follows” the sun during the day in its route from the East to the West. The handling system is hydraulic.
The collectors, with a motor every 24 m, can have unlimited length. The rigidity and strength of the metal structure allows for full operation in winds up to 13 m/s (in traditional systems, the limit is 10 m/s).
– interlocking system to fit the supporting structures with an accuracy
of up to 0.1 mm.