Call For Paper Volume:5 Issue:10 Oct'2018 |

Projecting the Solar Radiation in Nasarawa-Nigeria using Reitveld Equation

Publication Date : 30/01/2018


DOI : 10.21884/IJMTER.2018.5016.D8PR3

Author(s) :

Benedicta Chidinma Njoku , Musibau Adedeji Adesina , Eshipemi Wilson Lukman , Bankole Omojola.


Volume/Issue :
Volume 5
,
Issue 1
(01 - 2018)



Abstract :

A model to project the solar radiation of Nasarawa (Latitude of 8° 31' 45" N, Longitude of 7° 43' 27" E) was developed using Reitveld equation. The parameters measured were solar radiation intensity (W/m2) and hours of bright sunshine from 06.00 H to 18.00 H daily for the months of January to December, 2013. Other data collected were maximum and minimum temperatures values and relative humidity of the study area on daily basis for a year. The regression constants ‘a’ and ‘b’ were obtained to be 0.28 and 0.49 respectively. The performance of ‘a’ and ‘b’ was tested using Root mean square error (RMSE), Normalized root mean square error (NRMSE) and Nash-Sutcliffe coefficient (E).The developed empirical model for determining the solar radiation for Nasarawa was H_m= H_0 [0.28+0.49(n/N)] with a coefficient of correlation of 0.55. The measured solar radiation (Hm) was compared to the solar radiation predicted by the model using F-LSD at p≤ 0.064. The low Normalized Root Mean Square Error (NRMSE) of 0.09 % showed a good agreement between the measured and predicted global solar radiation. The model therefore, can also be used to predict the solar radiation of Nasarawa.


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Projecting the Solar Radiation in Nasarawa-Nigeria using Reitveld Equation

January 23, 2018