Effect of flat plate collectors in series on performance of active solar still for Indian coastal climatic condition

The results show that solar still, with two FPCs connected in series, provides 41% more distillate yield when compared to still with single FPC and the still efficiency is 0.47% more with two FPCs connected in series. The still with three FPCs connected in series has produced 89% more distillate yield when compared to still with single FPC. However, the still efficiency is 0.48% less with three collectors in series due to increase in area for radiation. The increase in distillate yield for the still with FPCs in series is due to the attainment of high water temperature.