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Ouagued M.,University of Hassiba Ben Bouali Chlef | Khellaf A.,Renewable Energy Development Center Algeria | Loukarfi L.,University of Hassiba Ben Bouali Chlef
Energy Conversion and Management | Year: 2013

Algeria is blessed with a very important renewable, and more particularly solar, energy potential. This potential opens for Algeria reel opportunities to cope with the increasing energy demand and the growing environmental problems link to the use of fossil fuel. In order to develop and to promote concrete actions in the areas of renewable energy and energy efficiency, Algeria has introduced a national daring program for the period 2011-2030. In this program, solar energy, and more particularly solar thermal energy plays an important role. In this paper, the potential of direct solar irradiance in Algeria and the performance of solar parabolic trough collector (PTC) are estimated under the climate conditions of the country. These two factors are treated as they play an important role in the design of solar thermal plant. In order to determine the most promising solar sites in Algeria, monthly mean daily direct solar radiation have been estimated and compared for different locations corresponding to different climatic region. Different tilted and tracking collectors are considered so as to determine the most efficient system for the PTC. In order to evaluate the performance of a tracking solar parabolic trough collector, a heat transfer model is developed. The receiver, heat collector element (HCE), is divided into several segments and heat balance is applied in each segment over a section of the solar receiver. Different oils are considered to determine the thermal performances of the heat transfer fluid (HTF). Then, the HTF temperature and heat gain evolutions are compared under the topographical and climatic conditions. © 2013 Elsevier B.V. All rights reserved.

Bouzidi B.,Renewable Energy Development Center Algeria
Sustainable Energy Technologies and Assessments | Year: 2013

The pumping for drinking water in the desert and remote areas in developing countries must be regarded as a priority and useful application. The use of photovoltaic as the power source for pumping water is one of the most promising areas in photovoltaic applications. The design of the pumping system is based upon two important elements: the PV array and the storage tank. In fact, a poor design of the PV array and/or the storage tank could affect system reliability and create a deficit of daily water demand for the population.To characterize the system design, we use a new method based on the determination of Loss of Power Supply Probability (LPSP) during the year around a cycle of operation. It is possible that the volume of water required by the load is higher than that delivered by the pump. In these conditions, the consumption is not satisfied and there is a water deficit. We showed that the size of the storage tank has an influence on the reliability and the system sizing and must be treated with particular attention.The life cycle cost (LCC) method is used to estimate the cost of the optimal configuration. © 2013 Elsevier Ltd.

Boudries R.,Renewable Energy Development Center Algeria
International Journal of Hydrogen Energy | Year: 2013

The use of renewable energy and more particularly solar energy in hydrogen production is considered the most viable and the most environment protective. Electricity is required for water electrolysis to produce hydrogen. As photovoltaic modules enable the direct conversion of solar energy into electricity, photovoltaic systems are then the most indicated systems for this task. Algeria is richly endowed with renewable energy resources particularly solar energy. This situation makes Algeria an excellent place for the production of hydrogen using renewable energy. In the present work, particular attention is paid to the production of hydrogen from solar energy. The aim is to evaluate the potential of hydrogen energy production using an electrolyzer-concentrating photovoltaic system for different sites in Algeria. First the perspective of solar energy development, in light of the present energy situation in Algeria is discussed. Taking into consideration the availability of resources, the meteorological and radiation conditions, the advances in PV, tracking and electrolyzer technologies, different parameters are then used to determine the potential of hydrogen production in different sites. The results are reported and discussed. The potential at different locations in Algeria is determined. An inter-comparison between different technologies is carried out. For the system with the Fresnel reflector, the results show that the mean value over the country of the hydrogen production potential per unit cell area is about 0.14 kg H2/m2 day for the least favorable month; while this value is about 0.19 kg H2/m2 day for the most favorable month. For the system with the parabolic trough reflector, these values are about 0.10 kg H2/m2 day for the least favorable month and about 0.17 kg H2/m2 day for the most favorable month. Results show that electrolyzer-concentrating photovoltaic system is more appropriate for large scale production of hydrogen. Copyright © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Kaabeche A.,Renewable Energy Development Center Algeria | Ibtiouen R.,Polytechnic School of Algiers
Solar Energy | Year: 2014

This paper focuses on development of optimal sizing model based on an iterative approach to optimize the capacity sizes of various stand-alone PV/wind/diesel/battery hybrid system components for zero load energy deficit. The suggested model takes into consideration the hybrid system submodels, the Total Energy Deficit (TED), the Total Net Present Cost (TNPC) and the Energy Cost (EC). The flow diagram of the hybrid optimal sizing model is also demonstrated. Exploiting the developed model, all configurations giving the rate of 0% of Total Energy Deficit (TED) are retained. Afterward, the optimal configuration is predicted on the basis of the minimum cost. Using solar radiation, ambient temperature and wind velocity data collected on the site of Ghardaïa (Algeria), the optimized system is compared to other energy source choices. The optimization results show that a PV/wind/diesel/battery option is more economically viable compared to PV/wind/battery system or diesel generator (DG) only. © 2014 Elsevier Ltd.

Diaf S.,Renewable Energy Development Center Algeria | Notton G.,CNRS Environmental Sciences
Renewable and Sustainable Energy Reviews | Year: 2013

In this study, the wind energy potential and economic analysis in 13 locations are investigated using wind speed data measured at 10 m height. From the collected data which are the daily, monthly and frequency profiles of the wind speed at these sites, the southern region of Algeria is found to have the relatively highest wind potential. Technical and economic evaluations of electricity generation from different commercial wind turbines are examined. The yearly energy output, capacity factor and electrical energy cost of kWh produced by the selected wind turbines are calculated. In term of energy production, the results show that Adrar is the best location for harnessing the wind power and generating electricity. The capacity factors are found to vary from 6% at Skikda to 48% at Adrar. In addition, it was found that the minimum cost per kWh of electricity generated is about 0.0179 $/kWh at Adrar for the southern region, 0.0431 $/kWh at Oran for the coastal region and 0.0518 $/kWh at Setif for the highland region. Among all the considered models, the Suzlon S82-1500 wind turbine is found to be the most attractive in terms of cost per kWh. Based on the obtained results, the wind resource appears to be suitable for power production in the southern region, which makes it a viable substitute to diesel oil for electricity generation. © 2012 Elsevier Ltd.

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