Solar Stills Design and evaluation of: A Comprehensive Review

Abstract

Modifications to the Distiller in the water desalination in desert territories, a set of models was suggested (including simple solar panel with single-slope basin). The improvements were classified into two types. the first was to cool the condenser, and the second was to portray the process of heating the evaporator. Five experiments were carried out in the Ouargla region with a dry desert climate. The study, experimental and theoretical, supported the claim that when a heat pump evaporator was added, production of pure water was increased. It was followed by steam condensation and exposing the condenser to sunlight. This was best installation for the distiller. This improvement was then succeeded by the addition of a black sponge layer to the evaporator and then thin-thick glass application. A powder mix experiment showed that cooling air close to the outer face of the cover increased the quantity of distilled water. Lastly, the experiment with a two layer of glass, which is not a procedure, played a great role on increasing production. Summing up, the study under consideration can be defined as a process that includes condenser cooling and evaporator heating procedure. One of the advantages is the elimination of direct heat exchange between these two components and restriction of the heat exchange between these two components to the one in the distillation cell.