Browsing by Author "Musa, Bilya Abubakar"

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    Global Solar Irradiance over Keffi Town and its Environs, Nasarawa State, Nigeria
    (Department of Physics, Nasarawa State University Keffi, 2020-06-01) Mamman, Andah; Ibrahim, Umar; Dauda, Samson Yusuf; Musa, Bilya Abubakar; Ma'aji, U.M.
    The need to model energy generation has been on the increased, because of the rising needs of the power for use by large and small scale users. In this study, the assessment of global solar irradiance over Keffi and its environs, Nasarawa State, Nigeria was determined. A simple random sampling technique was used to select twelve locations in Keffi and its environs, Nasarawa State Nigeria for the measurement of global solar irradiance. Three 12V, 5W solar panels were used and a measurement interval of three hour daily (12.00pm to 3.00pm) was made using the Secondary Standard Pyranometer placed on the top of the panels. The continuity in the assembled system was measured using an Avometer. A model based on Angstrom-Prescott Regression Equation: ���� = ��0 [�� + �� ( �� �� )]was developed to calculate the solar irradiance for Keffi and its environs. The regression constants ‘a’ and ‘b’ were obtained to be 0.58 and 0.002 respectively by simple arithmetic. The highest value of the measured monthly average daily global solar radiation value was observed in the month of February (26.07 MJ/m2) while the lowest value was observed in the month of August (12.63 MJ/m2) with an average value of 19.24 MJ/m2. The extraterrestrial solar radiation was found to range from 24.43 MJ/m2 in December to 53.60 MJ/m2 MJ/m2 in February with average value of 37.97MJ/m2. The developed model can be used to predict solar radiation in Keffi and its environs, Nasarawa State