The Benefits Of Solar Distillation

1178 Words 5 Pages
Water is an essential part of all living creature – human, Animals, plants etc. in olden days humans are depend on revers and ponds for fresh waters, but as industrialization goes on they are no more drinkable and fresh. So getting fresh water is a challenging job now a days in developing countries. As population is going on increasing, need for fresh water is keeps on increasing day by day. The available water on earth is limited to 79%, out of which only 2% water is directly available [1], from which only 0.36% is drinkable water [2]. Ocean is the main source of water but it contains highly salinity, so it need to first desalinate before use. There are many techniques to convert brackish water in to potable water [3].
Other methods for desalinations
…show more content…
Kumar and Tiwari [17] reported that the cost of distilled water produced by a passive solar still was $0.014/kg for a 30-year life time system. It is also suggested that a solar distillation plant with a capacity less than 200 kg/d was more economical than other types of plants. Solar distillation presents a promising alternative for saline and brackish water desalination that can partially support humanity 's needs for fresh water with free energy, simple technology and a clean and green environment. Hassan E.S. Fath [18] reported that The development of solar distillation systems suits best for the desalination process when the weather conditions are favourable and the demand of fresh water is not too high, i.e., less than 200 m3/d. The problem of low daily productivity of fresh water with the solar stills triggered scientists to investigate various means to improve still productivity and thermal efficiency in order to reduce water production cost. Desalination is the process to produce fresh water for drinking and other useful purpose from the salted and brackish water, since desalination followed by evaporation and condensation which occurs very slowly hence produces high quality pure water. The present work shows the effect of water depth and Sensible Heat Storage Material (SHSM) on production of …show more content…
Tabrizi et al. [13] carried out experiment on solar still integrated with sandy reservoir. Result shows that in a Fourteen hour test, the productivity was 3 kg/m2, while productivity of conventional solar still was only 1.7 kg/m2. Hitesh Panchal [14] investigates the effects of various heat storage material on the productivity of solar still using blue metal stones and cow dung cakes. The experimental results shows that blue metal stones have the highest yield output at daytime, followed by cow dung cakes solar still. The overall yield of blue metal stones and cow dung cakes during daytime as well as at night time were 35% and 20% respectively compared to conventional solar still. Murugavel et al. [15] also investigates the effect of various materials on solar still productivity using quartzite rock, washed stones, red brick pieces, cement concrete pieces and iron scraps as a heat storing material. By experiments he found that among all material quartzite rock was the most effective, with a productivity of 2.1 kg/m2/day with an enhancement of 6.2% compared to conventional

Related Documents