This investigation is concerned with the performance analysis of a con
ventional hybrid photovoltaic/thermal air heating collector. A simulat
ion model is developed and various performance parameters are calculat
ed for single-glass and double-glass configurations. Results are prese
nted to show the effect of various design and operational parameters o
n the performance of a system. These results are useful for designing
such systems more scientifically. However, final selection of design a
nd operational variables must be based on the cost-effectiveness of th
e system. (C) 1997 Elsevier Science Ltd.