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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 23, No. 2, 2019, pp. 345-349
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Bioline Code: ja19051
Full paper language: English
Document type: Research Article
Document available free of charge
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Journal of Applied Sciences and Environmental Management, Vol. 23, No. 2, 2019, pp. 345-349
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Estimation of Global Solar Radiation, Sunshine Hour Distribution and Clearness Index in Enugu, Nigeria
ADENIJI, NO; AKINPELU, JA; ADEOLA, SO & ADENIJI, JO
Abstract
The concept of solar energy and its applications in this present day world would come to be one of the
solutions to our present Nigerian problem of instability and epileptic power supply. In the study, the baseline data for
mean monthly sunshine hours (S ) and global solar radiation (H ) for Enugu (6.70N, 7.60E) were obtained from the
Nigeria Metrological Agency (NIMET), Oshodi Lagos Nigeria and spanned 1996 to 2010. The data for global solar
radiation were measured with a Gunn-Bellani radiometer. The average sunshine hour for the period of study was
estimated to be 5.67 hours; the Angstrom constants
a
and
b
of Angstrom-type correlation used in estimating monthly
average global solar radiation was estimated to be 0.27 and 0.58 respectively; a linear regression correlation model was
developed for Enugu. The result of global solar radiation was found to be 14.44 MJm−2 day−1 thereafter subjected to
statistical tests [MBE , RMSE ,MPE ] and proved to be good estimates with previous literatures reviewed. The value
of clearness index (K T ) was estimated to range from 0.43 to 0.61 showing Enugu as so a partly clear sky city.
Keywords
Global solar radiation; Sunshine hour distribution; Clearness Index Enugu.
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© Copyright 2019 - Adeniji et al.
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