Investigando a influência das variáveis arquitetônicas na iluminação natural do poço de luz residencial

Abstract

The light well is an architectural resource to provide daylighting from the core of the building. It is often designed without taking into account the influence of each of the architectural variables on the gains in daylighting. This study aims to identify and compare the influence of architectural variables on the performance of daylighting in a residential light well. For this, a base model of a six-story building with a light well in the city of São Paulo, Brazil, was parametrically simulated, varying, in the alternative cases, its geometry, the walls reflectance and the windows opened to the rooms connected to it. For the evaluation of daylighting, the Annual Sunlight Exposure (ASE1000) and Spatial Daylight Autonomy (sDA300/50%) metrics were used in the ClimateStudio software. It was observed that increasing reflectance is a solution that improves lighting without increasing the levels of direct sunlight. The increase in the geometry results in greater direct sunlight, not exceeding the well fourth floor. To avoid glare in environments, the proportion of window-to-wall ratio should be lower in the upper half and higher in the lower half of the well. Thus, the variables considered contribute, in a different way, to the increase of daylighting in the evaluated environments, which may result in visual discomfort in some cases.

Keywords:

ClimateStudio daylight dynamic metrics light well lighting simulation

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