Author:
Bálint Palmgren Oscar,Tân Trần Duy,Davidsson Henrik,Gentile Niko
Abstract
Daylight analysis informs design decisions in architectural spaces, yet materials, colours, and furnishings - often chosen later - can significantly impact indoor daylighting. This study assessed these effects in a typical open-plan office in Copenhagen using parametric simulations with Radiance through Honeybee in Grasshopper, complemented by a sensitivity analysis following the Morris method. Various office sizes, window-to-wall ratios, orientations, and interior finishes were analysed for daylight factors (DF), Daylight Autonomy (DA), and Useful Daylight Illuminance (UDI). Results indicated that the visual transmittance of windows, furniture quantity, and partition height notably influenced daylighting, whereas surface reflectance had a lesser impact. The study also revealed complexities in predicting daylighting due to non-linear effects and variable interactions. The study suggests that designers might overestimate daylight in early design phases when spaces are unfurnished, indicating the need to clarify the use of furniture in daylight certification models.
Reference29 articles.
1. Scorpio M., Ciampi G., Gentile N., Sibilio S., Effectiveness of low-cost non-invasive solutions for daylight and electric lighting integration to improve energy efficiency in historical buildings. Energy and Buildings, 270 (2022). https://doi.org/10.1016/j.enbuild.2022.112281
2. A field study of fluorescent and LED classroom lighting
3. Illuminating Engineering Society (IES), Standard IES LM-83-12. Approved method: IES spatial daylight autonomy (sDA) and annual sunlight exposure (ASE) (IES Standards and Guidelines, Illuminating Engineering Society of North America, 120 Wall Street, New York, New York 10005, 2012).
4. Mardaljevic J., Andersen M., Roy N., J. Christoffersen. Daylighting metrics: is there a relation between useful daylight illuminance and daylight glare probability? In Proceedings of the building simulation and optimization conference BSO12, Loughborough, UK, 10-11 September (2012)