Performance enhancement of a conical solar still by optimizing inclination angle

Conical solar stills have the benefit over simple solar stills in that all of the top portions are exposed to the same solar radiation at all times and in all locations, eliminating the need to specify the direction of the sun's rays. Additionally, unlike the walls of the basic distillation system, the walls of the conical distiller do not induce shadowing inside the basin. The goal of the present investigation is to develop and build new distillers with a transparent conical cover inclined from the horizon at various degrees in order to attain the best cumulative yield of Conical Solar Stills (CoSS). An experimental test is conducted on three conical solar stills with varied incli-nation angles (30, 45, and 60 degrees with the horizon) in order to determine the ideal angle of CoSS that provides the maximum performance. According to experimental findings, employing a conical solar still at a 30 degrees inclination angle results in a maximum cumulative production of 5.90 L/m2, which is an improvement of 16.83 and 55.26% over CoSS at 45 and 60 degrees, respectively. When utilising the CoSS, however, yields of 5.05 and 3.80 L/m2 are obtained at inclination angles of 45 and 60 degrees, respectively. In order to get the maximum performance conical solar stills, CoSS with a 30 degrees inclination angle is advised based on cumulative yield data and daily efficiency.