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Abstrakt

Evaluation of monthly total global and diffuse solar radiation in Ibi, Taraba state, Nigeria

Abdullahi M. and Nasir M. A.

This study utilized monthly average daily values of global solar radiation and sunshine hour for Ibi, Taraba State, North-Eastern Nigeria to assess the applicability of solar energy utilization for this area. The clearness index KT values indicate the clear sky in the months of February to July and October to December for Ibi (lat.8.110N). The result obtained shows the variation of direct and diffuse component of solar radiation in summer and winter months. In this area the diffuse radiations is maximum during the month of July and August and minimum during the months of November, December and January. The regression constants “a” and “b” for the location were also calculated to 0.31 and 0.50 respectively. From the studies it has been found that with the exception of monsoon months August and September, solar energy can be utilized throughout the year in Ibi