The impact of the corrugated absorber shape on the performance of a hemispherical solar still for water desalination: an experimental study

Abstract Solar stills utilization has received great interest in arid isolated regions. In this study, experimental approaches have been investigated to prove the impact of corrugated absorber shape on hemispherical solar still performance. Four geometric shapes including present flat, triangular, semi-circular, square forms were tested for absorber. Five distillers fabricated and tested. The first distiller includes flat (HSD-FA), second (HSDSA), third semi-circular (HSD-SCA), fourth triangular (HSDTA), fifth is conventional (CHSD). compared with CHSD day. On day, as well. Experimental results obtained showed that, total freshwater yield HSD-FA, HSDSA, HSDSCA HSDTA improved by 16.67, 27.08, 39.58 48.96%, respectively, over that CHSD. These use shaped provides highest thermal efficiency, optimum shape.