Experimental assessment of square fin number variation on energy and exergy performance in double-slope solar stills under Tunisia weather conditions

This experimental study examines the effect of incorporating different numbers of fins in solar distillers for enhancing the evaporation rate and boosting productivity. A series of experiments were developed and tested to investigate the impact of varying number of fins. Four configurations were designed: a conventional double slope solar still (CDSSS) used as a reference, and three modified stills equipped with 6 fins (DSSS-6F), 12 fins (DSSS-12F), and 15 fins (DSSS-15F), respectively. The results demonstrated a significant increase in productivity for the fin-enhanced systems, particularly the DSSS-12F, which achieved the highest daily water output of 3.01 kg/m 2 , representing a 54.50 % improvement over the…