Thermal asymmetry model of single slope single basin solar still with sponge liner

Abstract

An attempt has been made to propose a thermal asymmetry model for single slope basin type solar still with sponge liner of different thickness (3 cm, 5 cm, and 10 cm) in the basin. Two different color sponge liners have been used i. e., yellow and black. In the proposed design, a suitable dripping arrangement has been designed and used to pour water drop by drop over the sponge liner instead of sponge liner in stagnant saline water in the basin. The special arrangement overcomes the dryness of the sponge during peak sunny hours. The performance of the system with black color sponge of 3 cm thickness shows better result with an output of 5.3 kg/m2 day and the proposed model have used to find the thermal asymmetries during the working hours of the still.