In this communication an attempt has been made to analyse the effect of water flow over the condensing cover of an inverted absorber solar still on the internal heat transfer coefficients. It has been observed that, for a particular flow rate, the evaporative heat transfer coefficient decreases as we increase the water depth in the basin. The radiative and convective heat transfer coefficients, though, do not vary much. Numerical computations have been performed for a typical day of Delhi weather. The results obtained have been compared with those of a conventional still.