IMPROVING THE PRODUCTIVITY OF SOLAR STILL BY USING TILTED WICK

Document Type : Original Article

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Assoc. Prof. of Agric. Eng., Fac. of Agric., Ain Shams Univ., Egypt.

Abstract

The objective of this study was to increase the performance and productivity of the solar still to use the distillate water for drinking and hydroponic.Fresh water shortages are rapidly becoming a critical problem in many areas of the world. Such a crisis seriously affects both the industrial and agricultural sectors and adversely affects human life. Therefore, the desalination water that uses solar energy is considered the best solution for solving this problem. Solar still was designed as a rectangular basin with dimensions of 100, 100, and 7.5 cm for length, width, and height respectively. This still was locally made up of 3 mm thick galvanized iron (GI) steels.Research experiment was statistically designed and practically applied at the Solar Energy Laboratory, Dept. of Agric. Eng., Fac. of Agric., Ain Shams University, Cairo (φ=30°N). The results explained that the maximum amount of distillate water rate was 5210 mL/h at water salinity at 15000 ppm in April. While the minimum value of distillate water rate was 2468 mL/h at salinity 35000 ppm in January.  The average of distillate water in April was 5044 mL while, the average of distillate water in January was 2595. It is recommended that use a solar still with tilted wick because it is cheap, easy to maintain and gives high efficiency.

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