A simplified method for estimating direct normal solar irradiation from global horizontal irradiation useful for CPV applications

P.J. Pérez-Higueras, P. Rodrigo, E.F. Fernández, F. Almonacid and L. Hontoria

Renewable and Sustainable Energy Reviews, 2012, vol. 16, issue 8, 5529-5534

Abstract: The design and analysis of CPV systems require knowledge of direct normal solar irradiation but ground-based measurements of these data are only available for very few locations. Nowadays, meteorological databases that estimate direct normal irradiation from satellite images and other data sources are used. However, values provided by the different existing databases show large dispersion due to different estimation methods, input data and base years. In this paper, a simplified method for calculating direct normal irradiation is presented. It has been obtained from previous models proposed by several authors. One of its advantages is that it only requires latitude and global horizontal irradiation as input data. As global irradiation is easy to find or measure, the procedure becomes a useful tool in renewable energy applications. The accuracy of this method is similar to that of the existing databases and it is able to easily generate a mass of direct normal irradiation data for different areas worldwide.

Keywords: Concentrator photovoltaics; Direct normal irradiation; Solar radiation model (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (7)

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DOI: 10.1016/j.rser.2012.05.041

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