HORIZONTAL GLOBAL SOLAR RADIATION BASED ON SUNSHINE HOURS OVER ENUGU, NIGERIA Page No: 1553-1557

Udosen E Akpan and Mfon David Umoh

Keywords: Global solar radiation, sunshine hours, Enugu, Nigeria.

Abstract: In this study statistical model of estimating global solar radiation over Enugu, Nigeria is presented. The study employed multiple regression analysis to estimate the monthly sunshine hours using four meteorological parameters for a period of eleven years (1997 to 2007). The parameters used included relative humility, temperature, rainfall and wind speed. The results showed the correlation coefficient of 0.849. Statistical test RMSE, MBE and MPE were employed to test accuracy the models used. The values of sunshine hours obtained were used to fit the Armstrong-Prescott equation to obtain the global solar radiation for Enugu.



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