1.1. Description of an STSC
An STSC is the result of the interception of the open circular area with a small side section of a parabola, and this directs the solar radiation to a fixed focal point where a Stirling engine is installed and secured by a fixed support structure. It used a 2-axis tracking system, which consists of a daily tracking mechanism that moves the reflector mounted on a carriage in proportion to solar and other time-tracking mechanisms, which provides for rotation of the reflector that is synchronised with the movement of the sun during the day. This angular movement of the reflector is made around an axis oriented to maintain a fixed focal point normal to the incidence of the aperture opening area of the reflector, thus concentrating the solar radiation in the cavity that receives and heats a gas (helium, hydrogen or air) at high temperatures [23]. Later, the Stirling engine converts the heat into electricity, as observed in Fig. 1.