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Effect of Inclination of Condensing Cover and Water Depth in Solar Still for Maximum Yield: In Winter Climatic Condition

[+] Author Affiliations
Anil Kr Tiwari, G. N. Tiwari

Indian Institute of Technology-New Delhi

Paper No. IMECE2005-82690, pp. 395-407; 13 pages
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Energy Conversion and Resources
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Power Division
  • ISBN: 0-7918-4218-5 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME


In this communication, an effect of inclination of condensing cover and water depth in still, on convective mass transfer coefficient in passive solar still has been studied. Three solar stills with effective basin area of 1 m2 for three inclinations of condensing cover namely 15°, 30° and 45° have been considered. Another still with same effective area but fixed cover inclination of 30° is considered to see the effect of water depths on still performance for water depths 0.04m, 0.08m, 0.12m, 0.16m and 0.18m. Outdoor experiments have been conducted for Delhi climatic condition. Hourly variations of water, vapor, and cover temperatures along with yield have been measured. Regression analysis is used to determine the convective heat and mass transfer coefficient for outdoor condition. The 45° condensing cover is found giving maximum yield and lower water depth responded for higher yield in winter climatic condition.

Copyright © 2005 by ASME
Topics: Solar stills , Water



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