EFEITOS DO USO DE VARANDAS NO DESEMPENHO LUMINOSO DE SALETAS COMERCIAIS DE EDIFÍCIOS DE ESCRITÓRIOS

Abstract

Shading is an effective bioclimatic architecture strategy for buildings located in hot regions. The balcony is a special type of shading device, which acts as an overhang to the lower floor, reducing the direct sunlight exposure, but allowing reflected and diffuse daylight. This research evaluates the effects of balconies on the luminous performance of cellular office buildings located in the city of São Paulo, Brazil. Different geometric configurations of balconies were simulated with the software OpenStudio. The evaluation of daylight was based on the dynamic criterion of Useful Daylight Illuminance (UDI) and the Simplified Daylight Glare Probability (DGP). As a result, we identified that the façade with the largest glazed area, with a window-towall ratio (WWR) of 90%, benefits from the presence of the balcony in all solar orientations. The best scenario regarding the luminous performance was the room with South façade, WWR 90% and balcony of 1.5 m depth, achieving a UDI of 74% and a B rating (good) for glare. The room with West façade and WWR 90% presented the best results for the balcony, reaching, for a balcony depth of 1, 1.5 and 2 m, 9% increase in UDI compared to the case with no balcony.