Estimation of Monthly Average Daily Solar Radiation from Meteorological Parameters: Sunshine Hours and Measured Temperature in Tepi, Ethiopia
International Journal of Energy and Environmental Science
Volume 3, Issue 1, January 2018, Pages: 19-26
Received: Oct. 14, 2017;
Accepted: Nov. 1, 2017;
Published: Feb. 28, 2018
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Girma Dejene Nage, Department of Physics, College of Natural and Computational Sciences, Mizan-Tepi University, Tepi, Ethiopia
In this study, several equations were considered to estimate monthly average daily solar radiation from meteorological parameters: Sunshine hours and measured Temperature in Tepi, Ethiopia. These equations include the original Angstrom-Prescott linear regression and modified models (quadratic, polynomial, logarithmic and exponential functions) and temperature based models. The performance of the models was evaluated using the methods of statistical analysis. This study shows that from sunshine hours based models Samuel and Newland models are appropriate for Tepi due to their better statistical model performance analysis. From temperature based models, Chen et al., models fitted the data adequately and can be used to estimate solar radiation from temperature measurement. However, the developed correlation models give better statistical model performance analysis and therefore, it can be recommended that these models are used reasonably well for estimating the solar radiation in Tepi and possibly in its surroundings sites with similar climatic conditions if empirical coefficients are correctly calibrated.
Girma Dejene Nage,
Estimation of Monthly Average Daily Solar Radiation from Meteorological Parameters: Sunshine Hours and Measured Temperature in Tepi, Ethiopia, International Journal of Energy and Environmental Science.
Vol. 3, No. 1,
2018, pp. 19-26.
Badescu V., 2008. Modeling Solar Radiation at the Earth’s Surface: Recent Advances; Berlin Heidelberg, Springer-Verlag.
Asress M. B., Aleksandar S, Dragan K., Slobodan S., 2013. Wind energy resource development in Ethiopia as an alternative energy future beyond the dominant hydropower. Renewable and Sustainable Energy Reviews 23: 366–378.
Ministry of Water & Energy (MoWE), 2011. Energy Sector Mapping & Database Development. First phase report.
Norton B., 2014. Harnessing Solar Heat; Springer, Dordrecht Heidelberg.
Lunde P. J., 1980. Solar thermal engineering. Wiley, New York.
Sen Z., 2008. Solar energy fundamentals and modeling techniques: atmosphere, environment, climate change and renewable energy; London, Springer-Verlag.
Ertekin C., Yaldiz O., 1999. Estimation of monthly average daily global radiation on horizontal surface for Antalya, Turkey. Renewable Energy; 17: 95–102.
Duffie J. A., Beckman W. A., 2013. Solar engineering of thermal processes. 4th ed, New York: Wiley.
Spencer J. W., 1971. Fourier series representation of the position of the Sun. Search; 2: 172.
Almorox J., Hontoria C., Benito M., 2011. Models for obtaining daily global solar radiation with measured air temperature data in Madrid (Spain). Applied Energy; 88: 1703-9.
Prescott J. A., 1940. Evaporation from water surface in relation to solar radiation. Transactions of the Royal Society of Australia; 46: 114–8.
Ogelman H., Ecevit A., Tasdemiroglu E., 1984. A new method for estimating solar radiation from bright sunshine data. Solar Energy; 33: 619–25.
Samuel TDMA., 1991. Estimation of global radiation for Sri Lanka. Solar Energy; 47: 333–7.
Newland F. J., 1988. A study of solar radiation models for the coastal region of South China. Solar Energy; 31: 227–35.
Bakirci K., 2009. Correlations for estimation of daily global solar radiation with hours of bright sunshine in Turkey. Energy 2009; 34: 485–501.
Elagib N., Mansell M., 2000. New approaches for estimating global solar radiation across Sudan. Energy Conversion and Management; 41: 419–34.
Hargreaves G. H., Samani Z. A., 1982. Estimating potential evapo-transpiration. Journal of Irrigation and Drainage Engineering; 108 (IR3): 223–30.
Meza F., Varas E., 2000. Estimation of mean monthly solar global radiation as a function of temperature. Agricultural and Forest Meteorology; 100: 231–241.
Chen R., Ersi K., Yang J., Lu S., Zhao W., 2004. Validation of five global radiation models with measured daily data in China. Energy Conversion and Management; 45: 1759–69.
Yorukoglu M., Celik A., 2006. A critical review on the estimation of daily global solar radiation from sunshine duration. Energy Conversion and Management; 47: 2441–50.
Annandale J. G., Jovanic N. Z., Benade N., Allen R. G., 2002. Software for missing data error analysis of Penman-Monteith reference evapo-transpiration. Irrigation Science; 21: 57-67.
Muneer T., 2004. Solar Radiation and Daylight Models, 2nd ed., Elsevier Butterworth-Heinemann.
Bristow K. L., Campbell G. S., 1984. On the relationship between incoming solar radiation and daily maximum and minimum temperature. Agric Forest Meteorology; 31: 59–166.
World Meteorological Organization; 2008. Guide to meteorological instruments and methods of observation. 7th ed. Geneva.
Adaramola M. S., 2012. Estimating global solar radiation using common meteorological data in Akure, Nigeria; Renewable Energy 47: 38-44.
Jiang Y., 2009. Correlation for diffuse radiation from global solar radiation and sunshine data at Beijing China. Journal of Energy Engineering; 135: 107-111.
Iqbal M., 1980. Prediction of hourly diffuse solar radiation from measured hourly global radiation on a horizontal surface. Solar Energy; 24: 491-503.
Mahmood R., Hubbar K. G., 2002. Effect of time of temperature observation and estimation of daily solar radiation for the Northern Great Plains, USA. Agronomy Journal; 94: 723–33.
Hunt L. A., Kucharb L., Swanton C. J., 1998. Estimation of solar radiation for use in crop modeling. Agricultural and Forest Meteorology; 91: 293–300.