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Abstract: Detailed characterisation of daylighting under a roof, a dormer and a vertical window: Final results of an exhaustive simulation project using Radiance 
Marie-Claude Dubois (Laval Univeristy, Canada), Kjeld Johnsen (BRE, Denmark), Karl Grau
 
This paper will present the final results of an exhaustive simulation project achieved at the Danish Building Research Institute and Laval University School of Architecture between 2002 and 2005. The aim of the Radiance simulations was to fully characterise daylighting in a room alternately fitted with a roof, a dormer and a vertical window. The evaluation of daylighting conditions in this room was based on the computation of a large set of performance indicators and on a subjective evaluation of the scale of shadow in the renderings. The performance indicators considered were: the daylight glare index, the luminance ratios, the luminance difference index, the vertical-to-horizontal illuminance, the absolute luminances, the horizontal illuminance, the size, location and intensity of sunlight patches and the cylindrical illuminance. This paper will show that it is possible to fully characterize daylighting by a careful examination of these indicators for a large number of times and skies, and that this process can be used as a methodology for the evaluation of daylight quality in any architectural project.

 

 

by AMcneil – last modified Feb 29, 2016 12:26 PM