In real world applications the nonimaging optics has the advantage of high error tolerance compared to conventional imaging optics. In this paper we present the result of a solar collector constructed with the nonimaging optics principles and the effect of off-positioning its absorbers on its optical efficiency. Thermal analysis of such effects are also presented.
Conventional solar trackers use information of the sun’s position, either by direct sensing or by GPS. Our method uses the shading of the receiver. This, coupled with nonimaging optics design allows us to achieve ultra-high concentration. Incorporating a sensor based shadow tracking method with a two stage concentration solar hybrid parabolic trough allows the system to maintain high concentration with acute accuracy.