Abstract
This paper investigates the use of planar reflectors which substantially improve the performance of flat-plate solar collectors. The experimental setup includes a collector panel and collector-reflector system with maximum useful heat gain. A computer simulation of the analytical and experimental recordings was made to study the comparative features of the systems. The performance study is illustrated as a function of solar altitude, azimuth angles, hour angle and the relative sizes and tilt angles of both the collector and reflector. The use of a booster mirror produces an increase of 10–15°C in water temperature. The shading effect due to the presence of the reflector has also been considered in the present analysis.
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