World Journal of Engineering Research and Technology (WJERT) has indexed with various reputed international bodies like : Google Scholar , Index Copernicus , Indian Science Publications , SOCOLAR, China , International Institute of Organized Research (I2OR) , Cosmos Impact Factor , Research Bible, Fuchu, Tokyo. JAPAN , Scientific Indexing Services (SIS) , Jour Informatics (Under Process) , UDLedge Science Citation Index , International Impact Factor Services , International Scientific Indexing, UAE , International Society for Research Activity (ISRA) Journal Impact Factor (JIF) , International Innovative Journal Impact Factor (IIJIF) , Science Library Index, Dubai, United Arab Emirates , Scientific Journal Impact Factor (SJIF) , Science Library Index, Dubai, United Arab Emirates , Eurasian Scientific Journal Index (ESJI) , Global Impact Factor (0.342) , 

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

News & Updation

  • Article Invited for Publication

    Article are invited for publication in WJERT Coming Issue

  • New Issue Published

    Its Our pleasure to inform you that, WJERT 1 July 2018 Issue has been Published, Kindly check it on http://wjert.org/home/current_issues

  • WJERT MAY ISSUE PUBLISHED

    JULY 2018 Issue has been successfully launched on 1 July 2018

  • WJERT New Impact Factor

    Its our Pleasure to Inform you that WJERT Impact Factor has been increased from 4.236 to 5.218 due to high quality Publication at International Level

  • ICV

    WJERT Rank with Index Copernicus Value 79.45 due to high reputation at International Level

Indexing

Abstract

DEVELOPMENT OF A NEW SUNSHINE-BASED GLOBAL SOLAR RADIATION ESTIMATION MODEL FOR IBADAN, NIGERIA

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

ABSTRACT

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.

[Full Text Article]