Improving the productivity of solar still by using water fan and wind turbine

This investigation explores the potential benefits of using water fan inside a conventional solar still (CSS) to solve the problems in our previous work (Kabeel et al., 2012) under different conditions. Two stills, CSS and fan solar still (FSS), were constructed and tested under environmental conditions. The fan fixed inside the FSS was operated using a wind turbine. Different water depths of FSS (1, 2, 3 and 4 cm) were investigated. It was found that the distillate of still increments with integrating the fan. During experimentations, the maximum productivity of FSS is achieved at water depth of 1 cm for fan rotational speeds less than 22 rpm, and at 3 cm for speeds greater than 22 rpm. Using water fan in CSS enhanced the daily productivity by about 17% at 3 cm and 30 rpm. Whilst, the daily efficiency of fan still was approximately 39.8% compared to 36.7% in our previous work at the same conditions.