Enhancing the Productivity of a Roof-Type Solar Still Utilizing Alumina Nanoparticles and Vacuum Pump

Abstract

Unlike conventional fresh water producing systems, from saline or brackish water, the innovative solar water producing systems are efficient and effective. Experiments were conducted on two identical roof-type solar stills and simultaneously tested under the same weather conditions. One of these stills was modified by integrating a vacuum pump to lower the pressure inside while the other still was used as a reference unit. Different concentrations of Al 2 O 3 nanoparticles were chosen, 0.2%, 0.4%, and 0.6%, and used with water inside the modified still. It was verified that the modified still, without nanoparticles, yields 34.84% more production than the conventional still. In addition, the modified still with a 0.4% of Al 2 O 3 nanoparticles produced the highest percentage of distilled water, 44.42% in comparison to the one without the use of Al 2 O 3 nanoparticles, followed by 37.94% and 24.07% for 0.6% and 0.2% of Al 2 O 3 nanoparticles, respectively.

Management of reverse osmosis concentrate by solar distillation

“…They showed that the use of energy storage increases productivity by 50% in the nocturnal period. In recent years, many researchers have investigated the effects of using various types of nanofluid on the performance of water purification solar still (Sahota & Tiwari 2016;Mutlq et al 2019;Parsa et al 2020;Singh et al 2020). Ajdari & Ameri (2022) evaluated the performance of an inclined stepped solar still integrated with phase-change materials PCM and a CuO/GO nanocomposite as a nanofluid.…”