Volume No. 3 Issue No.: 4 Page No.: 1223-1237 April-June 2009




B. Selvakumar1, R. Jayaprakash2, T. Arun Kumar and Sanjay Kumar3*

1. Department of Science and Humanities, RVS College of Engineering and Technology, Coimbatore, Tamilnadu, (INDIA)
2. Department of Physics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore, Tamilnadu, (INDIA)
3. Department of Physics, BR Ambedkar Bihar University, Muzaffarpur, Bihar, (INDIA)


Received on : March 25, 2009




An attempt has been made to study the effect of coupling of flat plate collector with the pyramid acrylic solar still. The top cover of the still is made up of transparent acrylic sheet of 3mm thickness. The objective of the present paper is to study the behavior of the still performance coupled with flat plate collector by analysing the internal heat transfer coefficients and thermophysical properties of the pyramid solar still.
The study incorporates the influence of different environmental and operational parameters on the still productivity. Environmental parameters include solar intensity, ambient temperature and wind speed. Operational parameters include inner and outer cover temperature, basin water temperature, basin air temperature and basin water depth. The maximum distillate output of 2 L/m2/day was obtained for pyramid solar still and 2.66 L/m2/day for solar flat plate collector coupled with the pyramid solar still. The efficiency of the experimental still varies from 7% to 29% and the variation for flat plate collector coupled with pyramid solar still in the range of 2 % to 8%. These results indicated that there is decrease in efficiency, even though the increase in still productivity is observed as the added advantage for this study.


Keywords : Solar Still, Water Collection, Efficiency, Flat Plate Collector.