International Journal of Research and Scientific Innovation (IJRSI) | Volume IX, Issue VI, June 2022 | ISSN 2321–2705

Techniques for extracting pure water by solar still with Fresnel lens and phase change materials

Abbas Sahi Shareef 1, Haider Nadhom Azziz2, Ameer Abdul-Salam3
1, 3Mechanical Engineering Department/ University of Kerbala-Iraq
2Petroleum Engineering Department/ University of Kerbala-Iraq
Corresponding Author

Abstract: The effect of adding Fresnel lens and phase change materials on water yield in Solar Desalination was studied. because of the massive demand for clean water and its limited supply in comparison to the amount of water on the Earth’s surface, providing safe drinking water is one of the most important concerns facing the world. It was also confirmed that the system was affected by Fresnel lens and phase change materials Led to increased evaporation rates, the amount of water increased. The innovative design of the solar still cascade, which includes a slanted absorber plate and baffles, allows for a shallower water depth and improved solar radiation direction, resulting in increased production.

Keywords: Fresnel lens, Phase Change Material, Solar Desalination.


Aside from population expansion, progress in all aspects of life has resulted in an increase in clean water use, which accounts for just 2.5 percent of the water on the planet’s surface [1]. Finding practical technologies for desalinating salty water has become vital. People utilize energy for all types of water desalination, whether electrical or thermal, and this energy may be expensive and harmful to the environment. Figure 1 depicts energy usage from 1985 to 2020, leading researchers to look for plentiful and sustainable energy [2]. Solar energy is the most important source of renewable energy because of its abundance. Because it has been used to desalinate water in solar distillation systems, it has no negative environmental impact [2] [3].