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Evaluation of Solar Potential at Niamey: Study Data of Insolation from 2015 and 2016

Smart Grid and Renewable Energy 2017年第12期8卷 394-411页

作者： Maigargue Dankassoua Saï dou Madougou saleye yahaya Laboratory of Energetic Electronics Electrotechnics Automation and Industrial Computing (LEA2EI) University Abdou Moumouni of Niamey Niamey Niger National Center of Solar Energy (CNES) Niamey Niger

Solar energy is a very abundant renewable energy source during the day. The solar energy received in a given point of the Earth is function of the time, the season and the latitude of the point. It has been proven that the solar energy received in one day by our planet is thirty times higher than the annual global energy consumption. Africa is one of the sunniest continents of the world. Nowadays, solar energy is attracting particular attention in the implementation of the energy policies. This renewable source is a key solution to world energy problems, especially in the context of global warming. Niger is identified as among the sunniest zones of the World. Knowledge of solar potential is one of the crucial parameters to master for energy applications. In this study, continuous measurements (at intervals of 5 minutes over 24 hours) of solar radiation have been carried out on the site of the National Center of Solar Energy of Niamey. These measurements were taken using the pyranometers, allowed us to collect the values of the daily global sunshine on a horizontal plane and on an inclined plane of the years 2015 and 2016. The treatment and the exploitation of these data allowed us to determine the daily and monthly duration of sunshine, then the impact of the clouds and dust on the solar radiation, to evaluate the solar potential of the site and determine the variations of this solar potential as a function of time. The results showed that the solar potential was very favorable for many solar applications.

关键词： Solar Energy Sunning Solar Potential Energy Application Solar Photovoltaic Solar Thermals

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Sensitivity of Solar Photovoltaic Panel Efficiency to Weather and Dust over West Africa: Comparative Experimental Study between Niamey (Niger) and Abidjan (Côte d’Ivoire)

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Computational Water, Energy, and Environmental Engineering 2016年第4期5卷 123-147页

作者： Alima Dajuma saleye yahaya Siaka Touré Arona Diedhiou Rabani Adamou Abdourahamane Konaré Mariama Sido Michel Golba WASCAL MRP Climate Change and Energy Université Abdou Moumouni Niamey Niger Centre National d’Energie Solaire CNES Niamey Niger Laboratoire d’Energie Solaire Université Félix Houphouet Boigny Abidjan Cote d’Ivoire LTHE-IRD Université Grenoble-Alpes Grenoble France Faculté des Sciences et Techniques Université Abdou Moumouni Niamey Niger Centre d’Excellence Africain en Changement Climatique Biodiversité et Agriculture Durable (CCBAD) Université Félix Houphouet Boigny Abidjan Cote d’Ivoire Energy and Semiconductor Research Laboratory Carl von Ossietzky University Oldenburg Oldenburg Germany

Energy demand is increasing while we are facing a depletion of fossils fuels, the main source of energy production in the world. These last years, photovoltaic (PV) system technologies are growing rapidly among alternative sources of energy to contribute to mitigation of climate change. However, PV system efficiency researches operating under West African weather conditions are nascent. The first objective of this study is to investigate the sensitivity of common monocrystalline PV efficiency to local meteorological parameters (temperature, humidity, solar radiation) in two contrasted cities over West Africa: Niamey (Niger) in a Sahelian arid area and Abidjan (Cote d’Ivoire) in atropical humid area. The second objective is to quantify the effect of dust accumulation on PV efficiency in Niamey (Niger). The preliminary results show that PV efficiency is more sensitive to high temperature change especially under Niamey climate conditions (warmer than Abidjan) where high ambient temperatures above 33°C lead to an important decrease of PV efficiency. Increase of relative humidity induces a decrease of PV efficiency in both areas (Niamey and Abidjan). A power loss up to 12.46% is observed in Niamey after 21 days of dust accumulation.

关键词： Solar Energy PV Efficiency Temperature Dust Humidity Niamey Abidjan

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