One-third of the Earth is covered
by seawater, yet there is a constant lack of water in many places. A total of
97% of the water is present in the sea as salt water, and only 3% of water is
potable, out of which only 1% of clean water reaches the people. Therefore, a
device is needed that can convert salt water into clean water. Solar still is a
sustainable device through which dirty and salt water can be converted into
clear water. Due to the low productivity of conventional solar still; it is not
popular in the market. Increasing the productivity of conventional solar still
is a major challenge for researchers. Researchers are continuously working on
the performance of solar still to increase its productivity. The modifications
and designs made by researchers in solar still over the last ten years are
encapsulated in this chapter. Solar still with PCM, nanoparticles, reflectors,
collectors, external condenser, wick materials, and different angles are
studied, and applications of distilled water have also been covered in this
chapter.
Keywords: Active solar still, Distilled water, Passive solar still, Solar still.
