Solar distillation under climatic conditions of Egypt

Samy M. ElSherbiny and Hassan E.S. Fath

Renewable Energy, 1993, vol. 3, issue 1, 61-65

Abstract: Solar distillation in a single basin was studied theoretically under the climatic conditions of Alexandria, Egypt. The unsteady energy equations for the glass cover, water and basin were simultaneously solved. The effects of saline water depth, insulation thickness and wind speed on the still productivity were evaluated. A year-round study showed that the productivity of the still strongly depends on the solar radiation and ambient temperature. The daily still productivity varies from 1.1 to 5.2 kg/m2 of basin area with an annual average of 3.16 kg/m2. The solar still efficiency variesfrom 0.34 to 0.49 with an annual average of 0.42. The daily total still production increased with decreasing the water depth and increasing the insulation thickness. Increasing the wind speed resulted in a relatively small reduction in still productivity. The maximum production rate occurred after the peak in solar radiation and the time lag increases with the increase in water depth.

Date: 1993
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:3:y:1993:i:1:p:61-65

DOI: 10.1016/0960-1481(93)90131-Y

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