Parametric studies of passive/active solar stills by using modified convective mass transfer relations

Abstract

SYNOPSIS In the present work, the effects of design parameters—namely water depth, absorptivity of basin liner and water mass, bottom insulation thickness and collector area for passive and active solar still—have been studied by using two sets of values of the constants C and n, by using inner and outer glass cover temperatures of the solar stills for a typical day under Delhi climatic conditions. The studies have been based on the basic energy balance equations of different components of passive and active solar stills taking into account modified values of C and n for convective mass transfer for both the systems. The results obtained in the present case are in accordance with the results reported earlier.