ESTUDIO DE SENSIBILIDAD DE CLARABOYAS EN EL TRÓPICO, CONSIDERANDO EL DESEMPEÑO INTEGRADO DE SUFICIENCIA LUMÍNICA, CONFORT VISUAL Y GANANCIA SOLAR

Abstract

This research presents a local sensitivity analysis of the daylight and thermal performance of nine design variables for skylights with shading in a tropical environment, with a hypothetical case study in different Colombian cities. Parametric simulation programs were used, implementing EnergyPlus as a thermal engine and Radiance as a daylighting engine, both integrated in the Honeybee plugin for Grasshopper. The design alternatives focused on the areas of: geometry and position, materiality, hours of use, location and shading. Performance metrics assessed with respect to base case design included Useful Daylight Illuminance (UDI), Annual Solar Exposure (ASE), Accumulated Solar Income (ISA), and Annual Solar Gain (GSA). The performance of the design alternatives was compared with the baseline and a percentage of sensitivity was defined by metric and with an integrated value of each variable. 162 different cases were simulated. The results conclude that for the study case with shaded skylights the most sensitive parameters for the daylight performance are, in ascending order: the angle of the shading device, the visible transmission, the orientation and the height of the space. And for the thermal performance are: the angle of the shading device, size of the skylight, solar gain coefficient and orientation.