International Journal of Technology Enhancements and Emerging Engineering Research (ISSN 2347-4289)

IJTEEE >> Volume 3 - Issue 12, December 2015 Edition

International Journal of Technology Enhancements and Emerging Engineering Research  
International Journal of Technology Enhancements and Emerging Engineering Research

Website: http://www.ijteee.org

ISSN 2347-4289

A Comparative Study Of Various Sunshine Based Models For Estimating Global Solar Radiation In Zaria, North-Western, Nigeria

[Full Text]



D. O. Akpootu, H. T. Sulu



Keywords: global solar radiation, sunshine hours, statistical test, Angstrom model, Zaria-Nigeria.



ABSTRACT: Solar radiation is a primary driver of many physical, chemical and biological processes on the earth’s surface. In solar applications, one of the most important parameters needed is the long- term average daily global solar radiation. For locations where no actual measured values are available, a common practice is to estimate average daily global solar radiation using appropriate empirical correlations based on available measured meteorological data at that location. In this regard, twelve (12) different empirical models based on Angstrom-Prescott model were selected to estimate the monthly average daily global solar radiation on a horizontal surface for Zaria, Kaduna State, North-Western, Nigeria (Latitude 11.060N, Longitude 07.410E and altitude 110.9 m above sea level) during the period of thirty one years (1980 – 2010) using the measured global solar radiation and sunshine hour. The twelve (12) selected models were compared on the basis of the statistical error tests; Mean Bias Error (MBE), Root Mean Square Error (RMSE), Mean Percentage Error (MPE), t – test, and coefficient of correlation (R). Based on the MBE and t – test equation 16 is extremely recommended. Based on RMSE equation 15 is extremely recommended and based on MPE equation 13 is extremely recommended. The newly developed regression equations (16, 15 and 13) for estimating global solar radiation in Zaria-Nigeria are based on the modified sunshine based models of the Ampratwum and Dorvlo, Newland and Ogelman et al. models and are also applicable in estimating global solar radiation in regions with similar climatic information where solar radiation data are not available.



[1] J. Almorox and C. Hontoria. (2004). Global solar radiation estimation using sunshine duration in Spain, Energy Conversion and Management., 45, 1529 – 1535.

[2] J. Almorox., M. Benito and C. Hontoria. (2005). Estimation of monthly Angstrom-Prescott Equation coefficients from measured daily data in Toledo, Spain. Renewable Energy., 30, 931-936.

[3] H. Alsamamra., J. Ruiz-Arias., D. Pozo-Vazquez and J. A. Tovar-Pescador. (2009). A comparative study of ordinary and residual kriging for mapping solar radiation over Southern Spain, Agriculture and Forest Meteorology., 3, 1343 – 1357.

[4] D. B. Ampratwum and A. S. S. Dorvlo. (1999). Estimation of solar radiation from the number sunshine hours, Applied Energy., 63, 161 – 167.

[5] A. Angstrom. (1924). Solar and terrestrial radiation, Quarterly Journal of the Royal Meteorological Society., 50, 121-125.

[6] K. Bakirci. (2009). Correlations for estimation of daily global solar radiation with hours of bright sunshine in Turkey, Energy., 34, 485 – 501.

[7] F. Besharat., A. A. Dehghan and A. R. Faghih. (2013). Empirical models for estimating global radiation: A review and case study, Renewable and Sustainable Energy Reviews., 21, 798 – 821.

[8] P. R. Bevington. (1969). Data reduction and error analysis for the physical sciences, first ed. McGraw Hill Book Co., New York.

[9] R. Chen., K. Ersi., J. Yang., S. Lu, and W. Zhao. (2004). Validation of five global radiation Models with measured daily data in China. Energy Conversion and Management, 45, 1759-1769.

[10] A. El-Sebaii and A. Trabea. (2005). Estimation of Global Solar Radiation on Horizontal Surfaces Over Egypt, Egypt. J. Solids, 28(1), 163-175.

[11] E. O. Falayi., A. B. Rabiu and R. O. Teliat. (2011). Correlations to estimate monthly mean of daily diffuse solar radiation in some selected cities in Nigeria, Pelagia Research Library., 2(4): 480-490.

[12] J. Glover and J. S. McCulloch. (1958). The empirical relation between solar radiation and hours of sunshine, Journal of Royal Meteorological Society.,84, 172 – 175.

[13] N. Halouani., C. T. Nguyen, and Vo-Ngoc, D. Vo-Ngoc. (1993). Calculation of monthly average solar radiation on horizontal surfaces using daily hours of bright sunshine. Solar Energy.,50, 247-248.

[14] M. Iqbal. (1983). An introduction to solar radiation, first ed. Academic Press, New York.

[15] A. K. Katiyar and C. K. Pandey. (2010). Simple correlation for estimating the global solar radiation on horizontal surfaces in India, Energy., 1 – 6.

[16] A. K. Katiyar and C. K. Pandey. (2013). A review of solar radiation Models-Part 1, Journal of Renewable Energy., 2, 1 – 11.

[17] A. Louche., G. Notton., P. Poggi, and G. Simonnot. (1991). Correlations for direct and global horizontal irradiation on a French Mediterranean site, Solar Energy., 46, 261 – 266.

[18] M. Mahmoud and I. Ibrik. (2003). Field experience on solar electric power systems and their Potential in Palestine, Renewable and Sustainable Energy Reviews., 7, 531 – 543.

[19] H. O. Merges., C. Ertekin and M. H. Sonmete. (2006). Evaluation of global solar radiation Models for Konya, Turkey. Energy Conversion and Management., 47, 3149-3173.

[20] F. J. Newland. (1988). A study of solar radiation models for the coastal regions of South China, Solar Energy., 31, 227 – 235.

[21] H. Ogelman., A. Ecevit and E. Tasdemiroglu. (1984). A new method for estimating solar radiation from bright sunshine data, Solar Energy., 33, 619 – 625.

[22] J. K. Page. (1961). The estimation of monthly mean values of daily total short wave radiation on vertical and inclined surface from sunshine records of latitudes 400N – 400S. Proceeding of the UN Conference on New Sources of Energy., vol. 4, no. 598, pp 378-390.

[23] J. A. Prescott. (1940). Evaporation from water surface in relation to solar radiation Transactions of the Royal Society of Australia, 46: 114-118.

[24] M. R. Rietveld. (1978). A new method for estimating the regression coefficients in the formula relating solar radiation to sunshine, Agricultural Meteorology., 9, 243 – 252.

[25] R. Saidur., H. H. Masjuki and M. Hassanuzzaman. (2009). Performance of an Improved Solar car Ventila-tor,International Journal of Mechanical and Materials Engineering., 4(1), 24-34.

[26] T. D. M. A. Samuel. (1991). Estimation of global radiation for Sri Lanka, Solar Energy., 47, 333-337.

[27] S. Zekai. (2008). Solar energy fundamentals and modeling techniques: atmosphere, Environment, climate change and renewable energy, first ed. Springer, London.