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Updating Methods for Real Time Flood Forecasting： A Comparison through Senegal River Basin Upstream Bakel

Journal of Environmental Science and Engineering(A) 2012年第1期1卷 58-72页

作者： Soussou Sambou Seni Tamba Clement Diatta cheikh Mohamed fadel kebe Department of Physics Faculty of Science and TechnicsThe University of Cheikh Anta DIOPDakar 99000Senegal Department of Civil Engineering The Polytechnical School of ThibsDakar 99004Senegal The Polytechnical High School Dakar 99000Senegal

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Economic Study of the Wind Energy Potential in Sahel

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Journal of Energy and Power Engineering 2013年第1期7卷 41-57页

作者： Madougou Saidou Said Frederique Campistron Bernard cheikh fadel kebe Department of Physics ENS -University Abdou Moumouni of Niamey Niamey BP 10 963 Niger Laboratory of Aerology University of Toulouse Toulouse 31400 France ESP--University cheikh Anta Diop of Dakar Dakar Fann BP 5085 Senegal

The wind pattern in Sahel is marked by a strong diurnal cycle as well as a strong seasonal cycle. The low level jet is blowing above the near-surface layer during nighttime and is decoupled from the surface. Nowadays, some studies showed the possibility to use the sub-jet wind at levels higher than 90 m as a source of energy in this area. In the present work, the wind turbines, with hub heights situated at 150 m and blade extremities at 150 ± 60 m, were used to make an economic study of wind energy potential in Sahel. Thus, monthly wind power was determined by two methods. The first involved the wind distributions directly observed. The second was based on the Weibull distributions which were fitted to the data. Day and night were compared. Results showed that this jet was an attractive source of energy provided if huge-capacity energy storage was used. So, the energy stored at night could be restored during the daytime, when the demand is highest. An economic study was done to estimate the number of wind turbines needed to satisfy the Niamey demand. The cost was found reasonably cheap relative to that of other renewable energy sources.

关键词：萨赫勒地区经济风能风力涡轮机能量来源威布尔分布可再生能源近地面层

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