Effect of water flow on internal heat transfer solar distillation

In this communication an attempt has been made to analyse the effect of wat er flow over the condensing cover of an inverted absorber solar still on th e internal heat transfer coefficients. It has been observed that, for a par ticular flow rate, the evaporative heat transfer coefficient decreases as w e increase the water depth in the basin. The radiative and convective heat transfer coefficients, though, do not vary much. Numerical computations hav e been performed for a typical day of Delhi weather. The results obtained h ave been compared with those of a conventional still. (C) 1998 Elsevier Sci ence Ltd. All rights reserved.