Development and performance evaluation of a solar water still

J. I. Orisaleye, S. O. Ismail, M. Ogbonnaya, A. A. Ogundare

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Abstract

The availability of potable water is a necessity for human existence. A simple laboratory scale solar water still capable of holding 75 litres of water has been developed and evaluated. The highest temperature in the solar still occurred at the vapour region and reached up to 66°C. The productivity of the solar still varies with the depth of water in the still. The results of the
productivity were 67.4 ml/m2h, 54.2 ml/m2h and 43.4 ml/m2h for depths of 20 mm, 40 mm and 60 mm respectively. The efficiency of the solar still was found to vary with the depth of water in the basin. The highest efficiency obtained for the solar still was 29.1% at a depth of 20 mm. Characterization of water quality before and after distillation in the solar still showed a reduction in chemical
and microbiological constituents after distillation which was comparable to standard drinking water. The solar still could be
developed at a small-scale workshop at reasonably cheap costs. Further work to improve the productivity of the solar water still is
proposed.
Original languageEnglish
Pages (from-to)91-96
JournalActa Technica Corviniensis-Bulletin of Engineering
Volume11
Issue number1
Publication statusPublished - 1 Jan 2018

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