Influence of water mass on the performance of spherical basin solar still integrated with parabolic reflector

Reliability of thermal desalination (solar stills) for water/wastewater treatment in light of COVID-19 (novel coronavirus “SARS-CoV-2”) pandemic: What should consider?

“…active or passive). In some cases researchers uses specific geometry for solar still such as double-slope [ 28 , 29 ], tubular [ 30 , 31 ], pyramid [ 32 , 33 ], hemispherical [ 34 , 35 ], spherical [ 36 , 37 ], stepped [ 38 , 39 ], and asymmetrical [ 40 , 41 ] to make an improvement on system. The most prominent passive techniques can be mentioned such as using energy absorbing/storing materials (sands, cement, and marble pieces) [ [42] , [43] , [44] ], porous media [ 45 , 46 ], utilizing phase change materials (PCMs) [ [47] , [48] , [49] , [50] ], using wicks [ [51] , [52] , [53] ], fins [ 54 , 55 ], internal/external reflectors [ [56] , [57] , [58] ], film cooling [ [59] , [60] , [61] ], increase the rate of heat and mass transfer by utilizing different nanoparticles in absorber/fluid/cover of solar stills [ [62] , [63] , [64] , [65] , [66] , [67] , [68] , [69] , [70] ].…”

Thermal Desalination Systems: From Traditionality to Modernity and Development

“…As a result, numerous investigations focused on improving the performance of solar distillers. Consequently, the solar stills such as stepped type [53-55] (the absorber of the basin takes the steps shape), disk type [56] (the main effective absorber is a rotating disk), vertical type [57] (the distiller horizontal width is very small compared to its vertical height), tubular type [58-60] (the outer shape of the distiller is tubular/cylindrical), drum type [61, 62] (the absorber is a rotating drum inside the basin still), PV/T active type [63, 64] (distiller powered by PV panels), finned type [65] (the absorber of the distiller is a collection of fins), trays type [66-69] (the main effective absorber has trays to enlarge the surface area), inclined type [70] (the absorber is inclined), wick type [10, 71, 72] (the wick material is spread over the absorber of distiller), corrugated type [73,74] (the absorber of the distiller is a collection of corrugated shapes), spherical type [75] (the distiller takes the shape of sphere), double-effect type [76][77][78] (the distiller has two stages of water basins), multistage type [79] (the distiller has multistages of water basins), inverted absorber type [80] (the distiller has inverted absorber inside it), hemispherical type [81] (the distiller takes the shape of sphere), convex type [82,83] (the absorber has a convex shape), and pyramid type [84][85][86] (the distiller takes the form of pyramid) are found in the literature. In addition, numerous modifications were performed to improve the distiller performance.…”

A study on heat and mass transfer analysis of solar distillation system

“…Radiations that are falling outside of the solar still can be transferred inside the basin with the help of reflectors. Reflectors also increase the intensity of solar radiation and at the same time collect the radiation at one place and more radiation transfer to the basin liner [65].…”