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Effect of orientation of solar still on the productivity of fresh water

S. Karroute and A. Chaker

Laboratoire de Physique Energétique, Université des Frères Mentouri, Route de Ain El Bey, Constantine, Algeria.

Abstract

It is very clear that the world head for investment in renewable and clean energy. Especially because the industrial development in the previous years is producing a big destruction in the fossil energetic resources ; moreover it leaves negative traces on the environment and climate. The use of the solar energy is raising hopes. The qualities of this source of renewable energy are known, free and inexhaustible. It’s moreover the most abounding energy on earth. The solar distillation is the excellent example of economical and ecological use of the solar energy, especially as their design does not present technical difficulties. However their output of fresh water remains insufficient. With a view to ameliorate the yield of the solar still, our study aims at the effect of changing the glass cover geometry on the quantity of absorbed solar energy, we have to compare between three types of solar stills, a single slope, a double slope and a spherical still, in order to select the perfect geometry. After having established the thermal balances of the various solar stills (single slope, double slope and spherical) at in stationary regime, the equations are solved by using 4th order Runge–Kutta method. The numerical results obtained allow showing unambiguously that the yield of the spherical solar still is the more important than that of the double slope and the plat solar stills.

Keywords

Single slope still, double slope still, Spherical still, Productivity.

Effect of orientation of solar still on the productivity of fresh water
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