Evaluation of Solar Still Depending on Air Velocity Conditions
Abstract
In solar distillation, the production of distilled water is a function of the efficient design involving evaporation-condensation processes under variable operating conditions, such as solar irradiance, temperature, speed, and direction of the wind, as well as the thermodynamic parameters characteristic of the solar still type. The experimental results of the effect of the air velocity in different modifications made to the double slope solar still are presented, such as the productivity of distilled water under controlled conditions. The study was carried out in Temixco, Morelos, Mexico, located at 18º 54 'north latitude and 99º 13' west longitude, with an average daily solar irradiance of 750 W / m2. It was observed that under conditions of average daily irradiation of 5.1 kWh / m2, the still, cool with a wind speed of 5.5 m / s, can produce 0.76 l in the case of confinement, or 0.66 l in the case of no confinement of ambient air.