Impactos do entorno imediato no projeto de proteções solares de edifícios altos

Abstract

Solar access can vary considerably due to the obstructions caused by the surrounding buildings. Therefore, shading solutions should address the specific characteristics of each context. This paper aims to demonstrate the impacts of solar obstruction from the surrounding buildings on the design of shading devices for tall buildings. A hypothetical 14-story office building is inserted in five urban scenarios composed of buildings with different height and spacing. Radiation simulations using Rhinoceros, Grasshopper and Ladybug are performed to calculate solar gains on the North facade, and shadow masks are generated for each floor and scenario. Based on this diagnosis, shading devices are proposed and evaluated through Daylight simulations on Honeybee. The findings suggest that by adapting shading devices to different shading requirements on each floor, it is possible to achieve satisfactory and uniform daylighting performance across all floors, while maintaining the facade's formal unity.