Browsing by Author "Adediran, Y.A."
Now showing 1 - 5 of 5
Results Per Page
Sort Options
Item Effects of PV and Battery Storage Technologies on the Optimal Sizing of Renewable Energy Microgrid(Universiti Teknologi Malaysia (UTM), 2018-04-16) Abdulkarim, Abubakar; Abdelkaderer, S.M.; Morrow, D. J.; Amuda, S. A. Y.; Madugu, I.S.; Falade, A.J.; Saminu, Sani; Adediran, Y.A.This paper presents analyses of the model for the optimum design of standalone hybrid microgrid. The model is developed with the aim of optimizing system component sizing that can reliably satisfy isolated loads. The objective function is to minimize the annual cost of the plant while taking all constraints into consideration. Mixed integer linear programming technique is used to solve the optimization problem. By applying some approximations, the output power of the wind energy conversion system is expressed as a linear function of wind speed. Effects of different PV technologies and the rated power of each unit have been investigated. The results have shown the ability of the proposed model by reducing the cost of energy by 89.35%, 90.26%, 88.3530%, and 89.99% for AP120, ASE 300, KC120 and SAPC165 respectively. In the same way the carbon dioxide emission is reduced by 83%, 82.82%, 82.51% and 73.48 in the same order of the PV modules. Also, the optimal design is sensitive to the rated power of the WECS and SECS, while the benefit-to-cost ratio and payback period are sensitive to the storage technology.Item On issues and challenges of rural telecommunications access in Nigeria(University of Eldoret, Kenya, Kyambogo University, Uganda, and Anambra State University of Technology, Nigeria, 2016) Adediran, Y.A.; Opadiji, J.F.; Faruk, N.; Olayiwola, W.B.Rural telecommunication access has to do with provision of telecommunication infrastructure in rural communities for the purpose of connectivity within communities and with the rest of the world. There has been growing interest in how to provide universal telecommunication access in developing countries. The trend in digital divide between the rural and urban areas for developing countries reveals a growing gap. Efforts are being made by developed nations to close the gap; hence, there is the need for reversal of this trend by developing nations in their pursuit of sustainable development. The rural communities in Africa, particularly in Nigeria, are strongly faced with many challenges which include extreme poverty, lack of social services and infrastructures, low level of education and health status, as well as unequal access to income opportunities. Despite the fact that telecommunications services in Nigeria could be traced back to 1851, the aforementioned factors, coupled with the difficult physical terrain in some cases, have made them lack behind the urban areas with regard to provision of telecommunications access. In this paper, issues and challenges of providing telecommunications access in the rural areas are provided. The work looks in-depth into the socio-cultural, literacy, security, infrastructure, regulatory and financial sustainability issues. Furthermore, the paper proffers some technological options/solutions to meeting the telecommunications needs of the rural communities in Nigeria within a very short, but reasonable, time.Item Opportunities for Universal Telecommunication Access in Rural Communities(Wits LINK Centre, University of The Witwatersrand, Johannesburg, South Africa., 2016) Olayiwola, W.B.; Opadiji, J.F.; Faruk, N.; Adediran, Y.A.The goal of universal telecommunication access is to make telecommunication infrastructure available to everyone irrespective of their geographical location, income level, age, gender or other discriminatory parameters. Despite substantial efforts to close the digital divide, developing countries still encounter daunting challenges in making access truly universal. In this article, the authors report on an exploratory field survey of 15 rural communities in Nigeria’s Kwara State to document their perception of the effects of rural telecoms access on their livelihoods. Results revealed mostly positive effects in respect of economic growth, poverty alleviation, health education, primary healthcare delivery, and reporting of epidemic outbreaks such as the recent Ebola crisis. However, little impact on quality of government service was recorded, as awareness of participation in governance and socio-political issues was found to be very low. The article discusses some areas in which universal telecommunications access can be expected, going forward, to address the needs of communities in rural and remote communities.Item Replacement Model for Street Lighting Systems(Nigerian Journal of Technology, 2021) Otuoze, Abdulrahaman; Usman, A.M.; Adediran, Y.A.; Mohammed, OO; Zakariyya, O.S.Replacing failed bulbs of streetlights in a location can be very tasking and expensive if the optimal time for replacement is not determined. In this paper, a model has been developed that helps to establish the optimal time for the replacement of streetlight bulbs. Burnt-out bulbs are replaced individually when they fail, and group replacement is carried out on all bulbs after a specified time. The costs for both individual replacement and group replacement are determined. The developed model was applied to locally sourced data from a field survey of a streetlight installation at the University of Ilorin, Ilorin, North-central Nigeria. The model gave the optimum replacement time of burnt-out bulbs as the eighteenth week when applied to the data used in this work. The optimum replacement time will be dependent on the dataset used. This makes the developed model useful in establishing the optimal replacement time of any stochastically failing items that are in large quantities. The model will help to reduce maintenance costs for facility managers.Item Socio-economic challenges of rural telecommunication access schemes in Nigeria(Department of Library and Information Technology Federal University of Technology Minna Nigeria, 2017) Faruk, N.; Olayiwola, W.B.; Opadiji, J.F.; Adediran, Y.A.There has been growing interest on how to provide universal telecommunication access in developing countries. The trend in digital divide between the rural and urban areas for developing countries reveals a growing gap. In this paper, we discussed from a socioeconomic perspective, the various challenges facing the deployment of rural telecommunication access in Nigeria. Successes and failures of existing universal access models in developing countries are highlighted. Exploratory field survey from fifteen rural communities in Nigeria was conducted. The investigation included characterization of rural communities; impact assessment of universal telecommunication access on rural Nigeria and sustainability analysis of possible universal access models vis-à-vis models that have been tested in other parts of the world. The paper provides guidelines to the service providers and regulators in choosing appropriate universal access model to achieve the telecommunication access in rural communities efficiently and effectively considering the peculiarities of Nigeria‟s rural socio-economic landscape.