Global luminous efficacies on vertical surfaces for all sky types

A. Soler and L. Robledo

Renewable Energy, 2000, vol. 19, issue 1, 61-64

Abstract: Luminous efficacies are determined at Madrid for North, South, East, West facing surfaces in two ways: by taking into account all the global illuminance and irradiance values available, and by considering data for each of three sky categories as defined from values of the sky clearness index ε′ and the sky brighteness index Δ. Both methods are compared, and for ε′<1.23 (overcast skies) the second method is found to be more accuarate than the first.

Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:19:y:2000:i:1:p:61-64

DOI: 10.1016/S0960-1481(99)00016-6

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