A new approach to estimating the diffuse irradiance on inclined surfaces

Eero Vartiainen

Renewable Energy, 2000, vol. 20, issue 1, 45-64

Abstract: The diffuse irradiance on an inclined surface is usually estimated from the hourly horizontal irradiance measurements with a slope irradiance model. It is also possible to calculate the slope irradiance by integrating the sky radiance distribution generated with a sky radiance model. In this paper, five slope irradiance models and six sky distribution models are compared with the hourly irradiance measurements on 24 inclined surfaces in Turku, Finland (60°27′N, 22°18′E). Of the sky distribution models, the Perez all-weather sky model agrees best with the measurements. Of the slope irradiance models, the Reindl model has the lowest average mean bias difference (MBD), but the Perez slope irradiance model gives the lowest root mean square difference (RMSD) for all but one of the 24 surface orientations. The average RMSD for the Perez all-weather sky model is 1.5 percentage points lower than for the Perez slope irradiance model.

Date: 2000
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (12)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148199000865
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:20:y:2000:i:1:p:45-64

DOI: 10.1016/S0960-1481(99)00086-5

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().