Performance assessment of a modified stepped solar still in the climate of libya

Due to the huge surface, it is challenging to maintain the minimum depth in a traditional basin-type solar still. However, a basin-type stepped solar still, which minimizes the basin's area by using small trays, can try to boost production per unit area by reducing the thermal inertia of the water mass. A novel kind of stepped solar still was created and constructed for this study. Furthermore, theoretical analysis has been done to forecast the output of distilled water. The majority of the numerical models of basin-type solar stills use the temperature and vapor pressure on the water's surface and the still's cover to determine the connections between evaporative heat and mass transfer. The energy balance equations for the absorber plate, saline water, and solar still glass cover are solved in order to obtain the results of the energy balance equations. According to the results, the modified stepped still's production is roughly 83% and 103% higher than that of the conventional solar still and the stepped solar still without modification. Additionally, the modified stepped still's daily efficiency is roughly 23% higher than that of the conventional solar still and 57% higher than that of the stepped solar still without modification.