Productivity enhancement of solar still by solar irradiation collecting techniques: Review study

Water distillation techniques are good ways to deal with shortage of freshwater. One of these techniques is solar water still which can be used to remove harmful substances from contaminated water by using free solar energy to make it safe to drink before using it. The most important obstacle to using a solar still is the modest amount of water that is produced. Therefore,there is a need to improve the performance of solar stills so that more water productivity can be made. In most rural areas, there aren't enough safe and clean places to get water to drink. Water comes mostly from shallow wells and rivers in these places. However, this water could be contaminated with harmful substances, like pathogenic bacteria, and therefore not safe to drink. Thus it is appropriate to use this technique in such areas. Several researchers focused them work on enhancing the productivity and efficiency of Single Slope Solar Still (SSSS) through adopting a wide range of modifications. This review reports various techniques that have been investigated to improve SSSS efficiency and clean water productivity.