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Résumé

Use of daylight offers great potential benefits in terms of energy savings, visual comfort and health, as long as it is properly controlled. This project is motivated by the necessity to describe façade systems and interior surfaces in order to quantify and compare their benefits in interaction with one another. It focuses on conventional and light-redirecting façade systems and their interaction with indoor coating material in terms of lighting potential. Comparisons are carried out using an annual climate-based performance metric for different façade systems. BTDFs of these façade systems are computed from a Radiance model. By linking incident light direction to transmitted light direction, they give a description of how light impinges on the coating. A Dynamic Radiance-based workflow is used to run a parametric study of relevant design factors such as transmission function, coating reflectivity and specularity.

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