Experimental analysis of stepped basin pyramid solar still integrated with mini solar pond

Many research works were carried out in the proper selection of design and operational parameters which plays an important role in the performance of a basin-type solar still. This experimental analysis was conducted to improve the design parameters such as condensing glass surface area, inlet brine water temperature, incident solar intensity rate, the gap between the basin water and glass. The pyramid glass cover increased the condensation area of the solar still. The mini solar pond was used to preheat the inlet brine water and the two external mirrors reflect more solar radiation into the still. The gap between the basin water and glass was less in the stepped basin. The results indicated that the daily productivity increased in mini solar pond integrated with the stepped basin solar still having mirrors. The productivity of the modified solar still was 4,920 mL per day, which was 66.2% higher than the conventional solar still.