Volume No. 7 Issue No.: 2 Page No.: 756-761 Oct. - Dec. 2012




Suneesh P.U.1 and Jayaprakash R.*2

1. Research and Development Centre, Bharathiyar University, Coimbatore (INDIA)
2. Solar Energy Laboratory, Department of Physics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore, Tamilnadu (INDIA)


Received on : July 15, 2012




A very simple and economical solar still is discussed in this paper. A two segment V–type solar still of 1.5 m2 has been constructed. The solar still experimentally tested on typical summer days in Coimbatore (11°.00 N, 77°.00 E), in particular and India’s climatic conditions. Hourly inner as well as the outer glass temperature, ambient air temperature and solar radiations were recorded during the sunny days. Experimental investigations on productivity, efficiency, internal heat transfer have been analyzed. The overall efficiency of the still has been calculated as 28%. Internal heat transfer studies shows that still design is good enough to reduce convective and radiative heat loss and thus ensures maximum evaporation.


Keywords : Solar still, Fresh water, Glass, Evaporation, Productivity