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Correlations for estimating solar radiation using sunshine hours and temperature measurement in Osogbo, Osun State, Nigeria 被引量:1
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作者 O. S. OHUNAKIN M. S. ADARAMOLA +1 位作者 O. M. OYEWOLA R. O. FAGBENLE 《Frontiers in Energy》 SCIE CSCD 2013年第2期214-222,共9页
In this study, the global solar radiation on horizontal surface in Osogbo, Osun state, Nigeria was analyzed using ll-year data (1997-2007). Correlations using linear and quadratic expressions were developed to relat... In this study, the global solar radiation on horizontal surface in Osogbo, Osun state, Nigeria was analyzed using ll-year data (1997-2007). Correlations using linear and quadratic expressions were developed to relate the global solar radiation on horizontal surface based on relative sunshine hours and temperature measurements for evaluating the monthly average daily global solar radiation. The calculated monthly clearness index values indicate that the prevailing weather condition in Osogbo is heavily overcast. All the developed quadratic correlations gave better correlation coefficients (0.834, 0.872 and 0.823 respectively) than the linear models. However, the Hargreaves and Samani related based quadratic model gave the best among the three developed quadratic expressions and is therefore suggested for estimating the monthly global radiation in this site and its surroundings. 展开更多
关键词 global solar radiation hargreaves model sunshine hour ambient temperatures Osogbo
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