Long-term experimental theoretical study on several single-basin solar stills

摘要

In this paper, the long-term (12 month) behavior and productivity of four reinforced fiberglass solar stills (RFSSs) and one concrete solar still (CSS) are reported. They presented good performance with a few issues in the yield and at the inlet and outlet conduits of the stills. The mean yield and the efficiency were 2401 ml/m(2) day and 26% for the RSS, and 1296 ml/m(2) day and 18% for the CSS, respectively. The initial salinity of the water decreased from 35,000 to 12 mg/l in both types of stills. The Dunkle and Kumar-Tiwari models were employed for the comparative theoretical analysis. The Dunkle model yield was 27% higher than that of the experimental for the RFSSs and 42.5% higher for the CSS, whereas the Kumar-Tiwari model results were 17.4% and 36.9% higher, respectively. The thermal model was implemented and regression analysis was performed using the professional Engineering Equation Solver (EES) V10.240 software.