Measurement of solar energy radiation at Okigwe using silicon solar cell
2000; Elsevier BV; Volume: 41; Issue: 2 Linguagem: Inglês
10.1016/s0196-8904(99)00088-6
ISSN1879-2227
Autores Tópico(s)Solar Thermal and Photovoltaic Systems
ResumoUtilizing a silicon solar cell with an average power conversion efficiency of ∼10.23%, the global solar radiation at Okigwe, located at latitude 5° 40′ N and longitude 7° 10′ E, and with no known previous record of such data, was evaluated. Readings were taken hourly and daily for a period of four months, January–April, an important part of the dry season in Nigeria outside the harmattan period. It was observed that the insolation was generally high, reaching up to a monthly mean hourly value of ∼1011.85 W m−2 and has a daily time duration of ∼12 h with ∼8 h of noontime sunlight. The diurnal variation was found to be slight within the months. The monthly mean variation was also found to be slight, varying from 10.22 kW m−2 in January to 9.99 kW m−2 in April.
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