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Assessment of Potential for Solar Pond Development at Chott el Djerid, Tunisia through Multi-criteria Analysis

Khan, Mohammad Omer Faruk (2021) Assessment of Potential for Solar Pond Development at Chott el Djerid, Tunisia through Multi-criteria Analysis.

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Abstract:The potential for developing artificial solar pond in Chott el Djerid, Tunisia has been investigated. Solar pond is a simple technology to harness the solar energy. The three layers in a the most common type of solar pond or Salinity Gradient Solar Pond (SGSP)- a relatively fresh water layer at the top, a gradient zone at the middle with increasing salinity and density, and a brine layer at the bottom consist a solar pond. The solar energy upon entering into the pond is absorbed in these three layers. Convection cells generate in the top and bottom layers called the Upper and Lower convective zones respectively, but is prevented by the gradient middle layer hence called the Non-Convective Zone. Thus, heat is prevented from transported to the top and made to be trapped in the bottom layer. The bottom layer is thus heated and the temperature may rise up to 100 °C, which may be used for different purposes along with generating electricity. Natural occurrences of solar ponds are rare and may not be optimal for commercial use. Thus, artificial solar ponds may be developed in suitable locations where remote sensing and GIS come into play. Certain geo-environmental criteria may be favorable for the artificial development of solar pond such as solar irradiation, flat land and low wind speed. Suitable location should also be near settlement areas and water bodies. However, solar pond may not be developed in already developed areas such as settlements, roads, vegetated areas and natural water bodies and should be at a suitable distance. Thus, the problem of identifying a suitable location for solar pond is a multi-criteria geospatial decision problem and hence a multi-criteria analysis has been performed for identifying suitable locations for solar pond. It has been found that three areas are most suitable for solar pond development in the chott- northwest, south and northeast. The best locations has been chosen with considerable areal extent where all the suitability criteria has been fulfilled.
Item Type:Essay (Master)
Faculty:ITC: Faculty of Geo-information Science and Earth Observation
Programme:Geoinformation Science and Earth Observation MSc (75014)
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