Enhancing the performance of conventional solar still using the Nano-doped paint (NDP) coating

Authors

Hagar Alm-Eldin Bastawissi Prof.Dr, Faculty of Engineering, Tanta UniversityFollow
Nermin Elgendy Engineer, Tanta UniversityFollow
Ayman R. El-Tohamy, Faculty of Engineering, Tanta UniversityFollow

Abstract

Nations are throughout the entire globe continuously confronting the problem of potable water shortage. Recently, it has been thought that using solar energy to desalinate brackish water offers a practical answer to the world's water crises. The output of these stills, is meager, and academics haven't done much to boost it in any way. Solar distillers have been proposed as an efficient method to produce potable water. In recent years, saltwater has produced drinking water by various ways. The efficiency of a solar distiller is significantly influenced by various factors, most important factor of them is the absorber surface. In this research, an effort is made to increase the efficiency of a traditional solar distiller by applying a thin coating of Nano-black paint to increase the thermal conductivity of the absorber surface. The absorber significantly affects how effectively the solar still functions. In the experiment described in this article, a layer of Nano-doped black paint (NDBP) was applied on that which absorbs a standard solar still in an effort to improve the device's performance. The results showed that the nanocoating changed the condensation mechanism of all materials from film-wise to droplet-wise.It was also concluded that drip condensation at larger surface inclination angles leads to increased condensate water production.For example, the formation of condensation on the glass surface was increased by the 23rd nanocoating at a surface tilt angle of 50°. Additionally, an additional collector was used to estimate the droplet volume before and after the coating process. Also, The results indicated that, the productivity of the conventional solar still has been increased with about 25-32% when use the nano thermal coated. While the modification in design produces an average 18% improvement in fresh water productivity

Recommended Citation

Bastawissi, Hagar Alm-Eldin Prof.Dr; Elgendy, Nermin Engineer; and El-Tohamy, Ayman R. (2023) "Enhancing the performance of conventional solar still using the Nano-doped paint (NDP) coating," Journal of Engineering Research: Vol. 7: Iss. 6, Article 12.
Available at: https://digitalcommons.aaru.edu.jo/erjeng/vol7/iss6/12