Correlation for Diffuse Radiation from Global Solar Radiation and Sunshine Data at Beijing, China
Publication: Journal of Energy Engineering
Volume 135, Issue 4
Abstract
Solar radiation data are essential for the work of energy planners, engineers, and agricultural scientists. However, most solar radiation recording stations measure only global radiation in China. It is, therefore, necessary to elaborate correlations between the rarely available diffuse radiation and other climatic data. In the present study, 10-year data (1995–2004) of daily global diffuse solar radiation and sunshine duration obtained at Beijing meteorological station of China was analyzed to guide future projects. Nine models correlating the diffuse fraction with both the clearness index and percentage possible sunshine and each variable separately were tested. The accuracy of the correlations is performed in terms of the two widely used statistical indicators, mean bias error, and root mean square error. The results indicate that the correlations relating with both and are more reliable than using each variable separately and Model 9 is preferred for its accuracy. The recorded data of Zhengzhou meteorological station are compared with the corresponding values predicted by Model 9 of Beijing. Model 9 provides predictions very close to the measured values of Zhengzhou. Therefore, it may be concluded that Model 9 can be used for estimating diffuse solar radiation for locations of semiwet region of the north of China where only global solar radiation and sunshine duration are available.
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Acknowledgments
This work was financially supported by the Doctoral Foundation of Xi’an Jiaotong University.
References
Aras, H., Balli, O., and Hepbasli, A. (2006). “Estimating the horizontal diffuse solar radiation over the Central Anatolia Region of Turkey.” Energy Convers. Manage., 47(15–16), 2240–2249.
Boland, J., Ridley, B., and Brown, B. (2008). “Models of diffuse solar radiation.” Renewable Energy, 33(4), 575–584.
Duffie, J. A., and Beckman, W. A. (1991). Solar engineering of thermal processes, Wiley, New York.
Elminir, H. K. (2007). “Experimental and theoretical investigation of diffuse solar radiation: Data and models quality tested for Egyptian sites.” Energy, 32(1), 73–82.
Frohlich, C., and London, J. (1986). Revised instruction manual on radiation instruments and measurements. World climate research program. Publication Series No. 7, WMO/TD-No.149, World Meteorological Organisation, Geneva.
Hamdani, N. A. (1989). “Estimation of the diffuse fraction of daily and monthly average global radiation for Fydhaliyah, Baghdad, Iraq.” Sol. Energy, 42(1), 25–31.
Kudish, A. I., and Evseev, E. G. (2008). “The assessment of four different correction models applied to the diffuse radiation measured with a shadow ring using global and normal beam radiation measurements for Beer Sheva, Israel.” Sol. Energy, 82(2), 144–156.
Liu, R. Y. H., and Jordan, R. C. (1960). “The interrelationship and characteristic distribution of direct, diffuse and total solar radiation.” Sol. Energy, 4(3), 1–19.
Mediavilla, M. D., Miguel, A. D., and Bilbao, J. (2005). “Measurement and comparison of diffuse solar irradiance models on inclined surfaces in Valladolid (Spain).” Energy Convers. Manage., 46(13–14), 2075–2092.
Mohamad, A. A. (2004). “Global, direct and diffuse solar-radiation in Syria.” Appl. Energy, 79(2), 191–200.
Muneer, T., Younes, S., and Munawwar, S. (2007). “Discourses on solar radiation modeling.” Renewable Sustainable Energy Rev., 11(4), 551–602.
Noorian, A. M., Moradi, I., and Kamali, G. A. (2008). “Evaluation of 12 models to estimate hourly diffuse irradiation on inclined surfaces.” Renewable Energy, 33(6), 1406–1412.
Rao, C. R. N. (1984). “The diffuse component of the daily global solar irradiation at Corvallis, Oregon, U.S.A.” Sol. Energy, 32(5), 637–641.
Tarhan, S., and Sarı, A. (2005). “Model selection for global and diffuse radiation over the Central Black Sea (CBS) region of Turkey.” Energy Convers. Manage., 46(4), 605–613.
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© 2009 ASCE.
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Received: Jun 5, 2007
Accepted: Dec 9, 2008
Published online: Nov 13, 2009
Published in print: Dec 2009
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