Evaluación técnica y económica de variantes de iluminación natural para un edificio de oficinas de hasta tres plantas utilizando herramientas BIM

Abstract

This work focuses on the technical and economic evaluation of natural lighting options for an office building of up to three stories, using BIM tools. The project aims to optimize the use of natural light to reduce the need for artificial lighting, as well as the associated energy costs, without compromising the thermal comfort of the building's occupants. Natural lighting is a key factor in architectural design due to its impact on the quality of environments, as it creates brighter, more functional, and more pleasant spaces for users. In this study, the building was modeled in Revit software, and energy and lighting simulations were performed using the Sefaira plugin, considering different window-towall ratios (WWR) and glazing types. Indicators such as sDA, ASE, and EUI were evaluated using ASHRAE and NEC-HS-EE standards. Several simulations were performed, concluding that by reducing glazed areas by 53% compared to the baseline, incorporating bedroom-type windows with clear glass and an air gap, and modeling overhangs at the top of the windows, simulation #23 improved natural lighting compared to the baseline, with energy consumption close to that of the baseline. Furthermore, the use and integration of BIM tools allows for more efficient and sustainable designs in office buildings. Keywords: Natural lighting, energy efficiency, building envelope, Sefaira