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Parametric studies on a double-exposure single-basin solar still

SYNOPSIS A parametric study on a double-exposure single-basin solar still is presented. Explicit expressions have been derived for water and condensing surface temperature, temperature differential between water and condensing surface, instantaneous distillate output and instantaneous efficiency together with the overall distillate output and overall efficiency of the system. The effects of water mass, absorptivity, reflectivity and bottom heat loss coefficient on the performance of the system have been investigated comprehensively. Numerical calculations were made for quantitative assessment of the analytical results. Performance of the system has been compared with a conventional single-basin solar still. The productivity of the double-exposure single-basin solar still is found to be enhanced significantly over the conventional single basin solar still.