Theoretical and Experimental Investigation of a Novel Multistage Evacuated Solar Still

[+] Author and Article Information
Yousif A. Abakr

School of Engineering, Taylor’s College Subang Jaya, No. 1 Jalan SS15/8 47500 Subang Jaya, Selangor, Malaysia

Ahmad F. Ismail

Department of Mechanical Engineering, International Islamic University, Malaysia, Jalan Gombak, 53100 Kuala Lumpur, Malaysia

J. Sol. Energy Eng 127(3), 381-385 (Jul 20, 2005) (5 pages) doi:10.1115/1.1866145 History: Received September 18, 2003; Revised July 21, 2004; Online July 20, 2005
Copyright © 2005 by ASME
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Abakr, Y. A., Jubran, B. A., Ismail, A. F., and Ahmed, M. I., 1999, “Prediction of the performance of a compact-evacuated solar still,” International Renewable Energy Congress99, Kuala Lumpur, pp. 95–99.
Uda, K., Sato, H., and Watanabe, K., 1994, “Development of advanced evacuated solar still,” Joint Solar Engineering Conference, ASME, pp. 513–519.
Fernandez,  J. L., and Chargoy,  N., 1990, “Multi-stage, indirectly heated solar still,” Sol. Energy, 44, pp. 215–223.
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Jubran,  B. A., Ahmed,  M. I., Ismail,  A. F., and Abakr,  Y. A., 2000, “Numerical modeling of a multi-stage solar still,” Energy Convers. Manage., 41(11), pp. 1107–1121.
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The total and individual stages daily yield at different internal pressures
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Daily yield of the multistage evacuated solar still (0.7 bar)
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Temperature variation at the different stages of the solar still
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Variation of temperature difference between the solar still stages
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Temperature difference between the first two stages versus the rate of heat input
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Variation of the still productivity versus internal pressure
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Variation of the estimated still productivity with the still height
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Schematic diagram of the evacuated multistage solar still
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Stress contours on the cylindrical type model of the solar still
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Contours of the liquid volume fraction
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The complete assembly of the multistage evacuated solar still
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Average global radiation at the testing site for July–August 2003
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Average ambient temperature during the test period




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