Performance study of an improved basin type vertical multiple effect diffusion solar still

摘要

Performance testing of floating wick basin type vertical multiple effect diffusion solar still with waste heat recovery (FW-BVMED-HR) was done, under outdoor conditions. The cumulative efficiency of the four effect FW-BVMED-HR increases by 33%, when the gap between partition plates is decreased from 16 mm to 10 mm. The cumulative efficiency decreases by 27% as the feed rate increases from 0.27 g/m(2)/s to 0.38 g/m(2)/s. Increase of basin water depth had little effect on the cumulative efficiency of the still. The cumulative efficiency increased by 58% when the number of effects was increased from 2 to 7.