Experimentally Investigating the Effect of Basin Water Depth in Passive Pyramid type Solar Still

This study is aiming to investigate experimentally the effect of basin water depth on the productivity of passive pyramid type solar still at Indore city of M.P(INDIA) with latitude and longitude (22.7196°,75.8577°). Solar still is very promising solution to address the scarcity of fresh water globally. So, understanding the role of parameter that affects its performance is very important in order to increase its productivity and efficiency, for that we construct a passive pyramid type solar still with square base and tested under varying depth from 2 cm to 10 cm. To evaluate its internal heat transfer and productivity. Temperature profile of ambient air, basin water, basin liner and glass cover also recorded to understand the heat transfer. While operating it with 2cm basin water depth the output distillate is (1020ml). While with 4 cm,6cm,8cm and 10 cm are 860,695,565 and 490ml. Which shows that its productivity is inversely proportional to the basin water depth. Because shallower water depth improves its productivity by faster evaporation. Whereas deeper basin water depth has lower efficiency due to its high thermal inertia. The conclusion of this experiment shows significant statement into the optimal design of the passive pyramid type solar still. This study highlights the importance of basin water depth as a critical parameter of passive solar still, which lay practical recommendation for future research work in solar base desalination system.