期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2015
卷号：4
期号：10
页码：14677-14685
DOI：10.18535/ijecs/v4i10.23
出版社：IJECS
摘要：The performance of both temperature and Sunshine dependent models were evaluated forthe estimation of global solar radiation over Nigeria using relative sunshine duration, mean monthlyminimum and maximum air temperature and extraterrestrial solar radiation (Ro). The monthly global solarradiation was estimated for 10 years (2001-2010). The Angstrom-Prescott (1924), Hargreaves and Sammani(1982) and Garcia (1994) models were used. Sokoto, Enugu, Port Harcourt and Oyo were chosen for thestudy. New Armstrong –type equations were formulated for each city with new coefficient constants.From the models compared, the improved Angstrom-Type models performed best with a RMSE of0.00000241, 0.00028, 0.0127, and 0.000935 for Enugu, Oyo, Port Harcourt and Sokoto respectively. Thiswas closely followed by the Hargreaves and Sammani Model and the Angstrom-Prescott model. The Garciamodel performed least.Sokoto recorded the highest global solar radiation in Nigeria with the month of April having 21.598MJ/M2/day, While Oyo has the least with 8.630 MJ/M2/ day during the month of August. Consequently thedeveloped Angstrom-type models can be used with confidence for each of the cities in Nigeria and otherlocations with similar latitudinal variations
关键词：temperature; sunshine duration; global solar radiation
