S.Sh. Soulayman (Syria)
Solar tracking; Solar radiation measurements; Mechanicalsystem.
A mechanical system for solar tracking was designed and constructed. The idea, which lays behind this system, is based on the determination of the position of sun during its apparent movement relative to the equatorial system of coordinates. This system allows to determining the position of the sun, in relation to any given point at the surface of the planet, using a solar hour angle, the angle of solar declination and the latitude angle of the mentioned point. Two independent methods were used in order to evaluate the performance of the proposed tracking system. The first one is based on measuring the shadow of a pole vertically mounted on plate surface of the tracking unit while the second method is based on the measuring the output current of a standard solar cell mounted on a tracking unit. Experiment has demonstrated the accuracy of the tracking system.
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