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World Journal of Engineering
Research and Technology

An International Peer Reviewed Journal for Engineering Research and Technology

ISSN 2454-695X

Impact Factor : 5.218

ICV : 79.45

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*F. S. Omotayo and M. O. Lasisi


This research focus mainly on five sunshine based models for the estimation of monthly mean daily global solar radiation using 36 years solar radiation and sunshine hour data for Ibadan. The Data used for this study was obtained from the archive of the International Institute of Tropical Agriculture (IITA) meteorological station located in Ibadan, Nigeria. The model evaluated includes Akinoglu-Eceit, Blacket al, Glover Mc- Culloch, Rietveld and Stone models. A new sunshine based regression model was developed using two-third (?) of the data collected from the station and were tested with the remaining one-third (?) of the data. The results showed that all the models provided estimates that were significantly different from the measured values. The decreasing order of predict ive accuracy was as follows order: Stone, Black et al., Rietveld, Akinoglu-Eceit and Glover-McCulloch respectively. The results also showed that model for estimates R values of 0.5 with P<0.0001 for Ibadan when compared with observed values. For the quadratic function Ibadan has 51.3% level of performance at P<0.0001. The model equations 0.274 + 0.322( . The model was then validated with the statistical parameters. The model is recommended for use in Ibadan.

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