Effect of basin water depth on the performance of vertical discs’ solar still—experimental investigation

Abstract

The ability to get clean water is the most urgent birthright for human beings. The scarcity of safe drinking water is a major challenge in both developed and developing countries. Due to overpopulation, industrial revolution advancements, and agricultural evolution, this challenge has become crucially influential. Several studies on solar desalination are being conducted to create novel models that will improve the efficiency and production of these units. Because of their higher evaporation, condensing, exposure, and output rates than traditional stills, vertical distillers have lately piqued the interest of numerous academics. In this study, the scholars investigated the impact of varying water depth at the best rotating speed of discs from their earlier work (1.5 rpm) on the thermal productivity of vertical distillers. Numerous water depths (5, 8, 11, and 14 cm) were studied at 1.5 rpm to specify the best depth. The results indicated that utilizing moving discs enhanced the distillers' productivity. Besides, the peak distiller performance was obtained at 1.5 rpm and 5 cm. Furthermore, the yield of the modified single-stage vertical distiller (MSSVD) and modified double-stage vertical distiller (MDSVD) was increased by 350 and 617.4%, respectively, over the conventional tilted distiller (CTD) productivity of 2.3 L/m2 day. MSSVD and MDSVD had the highest efficacy rates of 48.4 and 77.2%. Lastly, for CTD, CVD, MSSVD, and MDSVD, the pure water cost was 0.025, 0.0477, 0.0180, and 0.0193 $/L, respectively.

Exergy Analysis of a Simple Solar Still Augmented with a Flat-Plate Solar Collector

“…Moreover, at 5 cm depth and 1.5 rpm, the distiller's best performance was attained. Additionally, modified single-stage vertical distillers and modified doublestage vertical distillers both saw 350 and 617.4% increases in output, respectively, in comparison to the productivity of the standard tilting distiller, which was 2.3 L/m 2 day [7].…”

“…A modified double-stage vertical distiller with a moving disc was used by Diab et al [7] to test the effects of altering water depth at the optimal disc rotation speed on vertical distillers' thermal productivity. To determine the ideal depth, several water depths were examined at 1.5 rpm.…”