Title: Angstrom Constants for Estimating Solar Radiation in Sokoto, North-Western, Nigeria.
Abstract:Detailed information about the availability of solar radiation on horizontal surface is essential for the optimum design and study of solar energy conversion system. For Sokoto (Latitude 13.00oN, Long...Detailed information about the availability of solar radiation on horizontal surface is essential for the optimum design and study of solar energy conversion system. For Sokoto (Latitude 13.00oN, Longitude 5.25oE and altitude 304 meters above sea level), the economical and efficient application of solar energy seems inevitable because of abundant sunshine available throughout the year. In this paper, a new set of constants for Angstrom-type correlation for first, second and third order, to estimate monthly average daily global solar radiation, has been obtained using global solar radiation and sunshine hours data for the period (1990-2005), capable of generating solar radiation at any given location and other surrounding towns of similar meteorological conditions. These results are then compared with other three models and the calculated global solar radiation data. The calculated global solar radiation for Sokoto (1990-2005), North-Western, Nigeria will enable the solar energy researchers to use the estimated data with confidence, because of its good agreement with the three applied models. Moreover, the maximum monthly average sunshine hours and calculated global solar radiation for Sokoto (1990-2005) on a horizontal surface are found to be 8.99 hours and 24.33MJ/m 2 /day respectively, and this occurred in the months of November and June. To test for the performance of statistical significance of the models, mean bias error (MBE), root mean square error (RMSE), mean percentage error (MPE) and t-test values were adopted, however, the MBE, RMSE and MPE gives a fairly good estimates while the results shows that at both confidence level of 95% and 99% for Sokoto, they are significant.Read More
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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Cited By Count: 2
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