TITLE:
Determination of a Suitable Solar Radiation Model for the Sites of Chad
AUTHORS:
Marcel Hamda Soulouknga, Ruben Zieba Falama, Oluseyi Olanrewaju Ajayi, Serge Yamigno Doka, Timoleon Crepin Kofane
KEYWORDS:
Global Solar Radiation, Sabbagh, Allen, Angstrom-Prescott, Meteorological Data
JOURNAL NAME:
Energy and Power Engineering,
Vol.9 No.12,
November
3,
2017
ABSTRACT: The aim of this study is the determination of a
suitable solar radiation model for the twelve cities of Chad based on meteorological data. Three appropriate models are used to estimate the solar radiation of each site. The choice of these
models is based on statistical tests such as
the Root Mean Square Error (RMSE), the Mean Bias Error (MBE), the Mean Percentage Error (MPE), and the Nash-Sutcliffe Equation (NSE). The obtained results show that the Angstrom-Prescott model is the most suitable for the calculation of
global solar radiation in the sites of Bongor, Pala, Am-timan and Mongo. For
the sites of Moundou, Sarh and Bokoro the Allen model is the most adapted for
the calculation of global solar radiation. On the other hand the Sabbagh model
is the most appropriate for the sites of Faya-Largeau, Abeche, N’Djamena, Ati and Moussoro. It has been revealed that Abeche is the site
with the highest solar radiation value equal to 6.354 kWh/m2 and Ati
is the site where the solar radiation has the lowest value around 5.523 kWh/m2. Based on the obtained results, it is
demonstrated that the three climatic zones of Chad have a good solar potential
and consequently suitable for the exploitation of the solar energy systems.