PERFORMANCE EVALUATION OF AN INVERTED ABSORBER SOLAR-STILL

In this communication, an analysis of an inverted absorber solar still has been presented. Analytical expressions for water temperature, con densing cover temperature, hourly yield and instantaneous thermal effi ciency have been derived in terms of design and climatic parameters. N umerical computation has been performed for a typical day of Delhi wea ther for a normal as well as an inverted absorber solar still. It is f ound that the inverted absorber solar still gives about double the out put of the conventional solar still. (C) 1997 Elsevier Science Ltd.