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ISRN Renewable Energy
Volume 2012 (2012), Article ID 569381, 10 pages
Research Article

Experimental Study on Various Solar Still Designs

1Solar Energy Laboratory, Department of Physics, Sri Ramakrishna Mission Vidyalaya, College of Arts and Science, Coimbatore 641020, India
2Research and Development (Renewable Energy), NSP Green Energy Technologies, Pvt. Ltd. Chennai 603 209, India
3Department of Civil Engineering, Faculty of Engineering, Green Engineering and Sustainable Technology Lab, Institute of Advanced Technology, University Putra, 43400 Serdang, Malaysia
4Centre for Renewable Energy and Environmental Research, P.O. Box-5, Muzaffarpur 842001, India

Received 4 April 2012; Accepted 3 May 2012

Academic Editors: S. P. Ahrenkiel and S. Senthilarasu

Copyright © 2012 T. Arunkumar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Humankind has depended for ages on underground water reservoirs for its fresh water needs. But these sources do not always prove to be useful due to the presence of excessive salinity in the water. In this paper, the fabrication of seven solar still designs such as spherical solar still, pyramid solar still, hemispherical solar still, double basin glass solar still, concentrator coupled single slope solar still, tubular solar still and tubular solar still coupled with pyramid solar still and their performance evaluation in converting brackish water into fresh water for drinking are presented. The experiment was constructed and tested during January to May 2011. All the solar stills were operated in the same climatic conditions to analyze the influence of the modifications on the productivity. From the observations, the compound parabolic concentrator-assisted tubular solar still shows the maximum yield.