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Corresponding Author

Mosaad, M.

Subject Area

Mechanical Power Engineering

Article Type

Original Study

Abstract

In this study, the performance of two different types of solar stills has been investigated during a period of fifteen days from 30.80 to 18.9.1997, under the climatic conditions of Cairo city. One of the two stills is from the conventional basin type, while the other is porous-basin still. Both stills are of equal basin area=0.85 m3 and covered by single glass inclined with an angle of 20 degrees to the horizontal basin base. Ten daily tests have been performed during this time period, the daily test starts at 9 A.M. and ends at 6 P.M. During the test, measurements were made in terms of the solar flux, ambient glass cover and basin water temperatures and distillate productivity, in these tests, the effect of basin water depth on the still performance has been investigated for both still types. The results showed that the porous-basin still with 1.6.cm basin water depth has better performance than the conventional still. Daily distillate productivity of about 2.3 liter/m3 could be obtained from the porous still. On other side, a best performance of the conventional still could be achieved for 5.CM basin water depth, with daily distillate productivity of about 2.1 liter/m2

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