The Alternative way to estimate the global solar radiation in Sabha city in southern Libya
Abstract
In Libya some climatic parameters without solar radiation data are measured at meteorological stations. In south of Libya where the most solar energy available, there is no recorder data any more. Because of equipment installation, repair costs, poor maintenance culture and recent events in Libya. This study aims to estimate the global solar radiation in the city of Sabha in southern Libya. Data used in this purpose is the average monthly daily values of sunshine hours for previous years (2000 - 2010). The data were obtained from the archive of the meteorological station at Sabha airport. A model based on the hours of sunshine is used to calculate the horizontal solar radiation in the city. Calculated values are compared with other measurement data from NASA website. The comparisons are made using standard statistical tests, namely root mean square error (RMSE), mean bias error (MBE) and the correlation coefficient R. Statistical analysis: the RMSE average value in all years is positive and small (0.42), which make it desirable. The MBE average value in all years has negative value (-0.10), which is under estimation. Finally, the correlation coefficient R, the correlation between the estimated values and the measured values from NASA is a positive correlation in all years, reaching (0.9) and the correlation strength is strong. It may almost reach complete correlation.
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References
Adeniji, N. O., Akinpelu, J. A., Adeola, S. O., & Adeniji, J. O. (2019). Estimation of global solar radiation, sunshine hour distribution and clearness index in Enugu, Nigeria. Journal of Applied Sciences and Environmental Management, 23(2), 345. https://doi.org/10.4314/jasem.v23i2.22
Angstrom, A. (1924). Solar and Terrestrial Radiation. J. Meteor. Soc., 50: Pp121-126.
Archive of the meteorological station (2000-2010). (n.d.). Sebha International Airport, Unpublished Data, Sebha.
El-Sebaii, A. A., Al-Hazmi, F. S., Al-Ghamdi, A. A., & Yaghmour, S. J. (2010). Global, direct and diffuse solar radiation on horizontal and tilted surfaces in Jeddah, Saudi Arabia. Applied Energy, 87(2), 568–576. https://doi.org/10.1016/j.apenergy.2009.06.032
El-Sebaii, A. A., & Trabea, A. A. (2005). Estimation of Global Solar Radiation on Horizontal Surfaces Over Egypt. In Egypt. J. Solids (Issue 28).
Falayi, *, & Rabiu, A. B. (2011). Estimation of global solar radiation using cloud cover and surface temperature in some selected cities in Nigeria. Archives of Physics Research, 2(3), 99–109. http://scholarsresearchlibrary.com/archive.html
Frere E. T. (1980). Estimation and prediction of global solar radiation over Greece. Solar Energy, 24: Pp 63-70.
Gana, N. N., & Akpootu, D. (2013). Angstrom Type Empirical Correlation for Estimating Global Solar Radiation in North-Eastern Nigeria. In The International Journal Of Engineering And Science. www.theijes.com
Muhammad, A., & Darma, T. H. (n.d.). Estimation of Global Solar Radiation for Kano State Nigeria Based on Meteorological Data. In IOSR Journal of Applied Physics (IOSR-JAP (Vol. 6, Issue 6). www.iosrjournals.org
Mustafa A. Al-Refai. (2014). Optimal Design and Simulation of a Grid-Connected Photovoltaic (PV) Power System for an Electrical Department in University of Tripoli-Libya.
Page, J. K. ,. (1964). The estimation of monthly mean valuesof daily total short – wave radiation on vertical and inclined surfaces from sunshine records. Proceeding of the UN Conference on New Sources of Energy, Page 98.
Tiwari, G. N. and S. eta, S. S. (1977). Solar Thermal Engineering System. Narosa Publishing House, New Delhi, India.
Authors
Copyright (c) 2024 Ali Abdalraheem, Baba Omar
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