Effect of Climate Parameter on Solar Still: A Concise Review

Conventional solar still have poor efficiency and low distillate output. Climate parameter play important role in efficiency of solar still. Many investigators have investigated the effect of climate parameter to improve the performance of solar still. This review paper evaluates the effect of several climate parameters like wind velocity, ambient temperature, location and vapour pressure. Review was to be done to minimize adverse effect of climate parameter to improve the performance solar still. From this review, it is found that productivity of still increase with increasing wind speed but performance of still little bit decrease with higher wind velocity approximately more than 9 m/s. There is direct relationship between the solar radiation and ambient temperature. The daily productivity increased as ambient temperature increased and directly promotional to the solar radiation. The productivity remains intact during the variation in vapour pressure of surrounding air on solar still. Further, it is found that at low latitude station in India, yearly total radiation and seasonally radiation are approximately equal irrespective of E-W or N-S orientation for double slop single basin solar still. At high latitude, the east-west orientation receives more radiation than the south-north orientation, taking the year as a whole, while there is no effect of orientation in case of lower latitude for double slope single basin solar still.  The single slope solar still single basin facing south collects greater amount of solar radiation as compared to the dual slope single basin solar still at lower and higher latitude locations. Solar still would be kept south facing for northern latitude and north facing for southern latitude.