ANALYSIS OF DOUBLE EFFECT ACTIVE SOLAR DISTILLATION

In this communication, an analysis of a double effect, active solar di stillation unit has been presented by incorporating the effect of clim atic and design parameters. Based on an energy balance in a quasi-stea dy condition, an analytical expression for hourly yield for each effec t has been derived. Numerical computations have been carried out for a typical day in Delhi, and the results have also been compared with si ngle effect, active solar distillation unit. It has been observed that there is a significant improvement in the performance for a minimum h ow rate of water in the upper basin. (C) 1996 Published by Elsevier Sc ience Ltd.