Correlations of global and diffuse solar luminous efficacy for all sky conditions and comparisons with experimental data of five localities

M. Cucumo, A. De Rosa, V. Ferraro, D. Kaliakatsos and V. Marinelli

Renewable Energy, 2008, vol. 33, issue 9, 2036-2047

Abstract: Some simplified correlations of mean hourly global and diffuse luminous efficacy on the horizontal plane for all sky conditions have been obtained for Arcavacata di Rende (Italy) and have been compared with other literature models and other experimental data measured in Geneva (Switzerland), Vaulx-en-Velin (France), Bratislava (Slovakia) and Osaka (Japan). The comparisons show that, for global efficacy, the differences among the various models are not significant, and the use of a model with a constant value of efficacy gives good predictions of global illuminance. For the prediction of diffuse illuminance the differences among the models are larger, but the use of a constant diffuse efficacy provides a good first estimate of diffuse illuminance.

Keywords: Global luminous efficacy; Diffuse luminous efficacy (search for similar items in EconPapers)
Date: 2008
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Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:33:y:2008:i:9:p:2036-2047

DOI: 10.1016/j.renene.2007.11.015

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