Development of Daylight Glare Analysis Method Using an Integrated Parametric Modelling Approach: A Comparative Study of Glare Evaluation Standards

Abstract

Conducting lighting simulations to investigate lighting performance, such as glare, is widely accepted and of particular interest in the design development stage. However, the main challenge remains in integrating lighting performance metrics into a streamlined modelling and evaluation workflow. With the advancement in digital and modelling technologies, an automatic workflow of modelling parametric design studies with lighting performance evaluation becomes feasible. This study investigates a parametric modelling approach to facilitate glare evaluation using China Green Building Standard as an example. Their glare evaluation adopted the known daylight glare index (DGI) with a revised glare source definition in the calculation. An evaluation toolkit is presented, demonstrating its applications with the sky model. Compared with DGI, the results articulate how a parametric modelling workflow can automate lighting performance evaluation and facilitate technical investigation and clarifications for glare evaluation. Through the parametric simulation studies, the differences in the limited metric scale and the sensitivity of capturing window sizes on the glare evaluation suggest future evaluation protocols for the environmental standard development.

A Comparative Study on the Sustainable Evaluation of DGNB and G-SEED Focusing on IEQ Enhancement

“…Review papers have highlighted lightning as a critical element impacting occupants' health. Studies have shown a strong preference for daylight over artificial light, and elucidated the potential relationships between visual comfort and circadian rhythm [2,38]. Building rating systems primarily cluster the key elements of daylight, internal lighting, external lighting, management of glare, occupant control, and access to views.…”

The Impact of Evaluated Daylight to the Total Light Ratio on the Comfort Level in Office Buildings

“…The availability of daylight in indoor spaces is influenced by location, weather conditions, windows and shading systems. However, because daylight raises room temperature, inappropriate daylight control can cause visual discomfort and glare for building occupants [1]. Visual performance is known to improve as illumination intensity increases; however, the light intensity does not necessarily have a favorable impact.…”