Space availability of buildings with virtual natural lighting solutions

R.A. Mangkuto, R.N.H. Claessen, M.B.C. Aries, E.J. Loenen, van, J.L.M. Hensen

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Natural light is highly variable and limited in time and space. In situations where it is not or insufficiently available, Virtual Natural Lighting Solutions (VNLS) can be promising. This paper presents research based on computer simulation to explore the space-gaining potential of VNLS in offices, healthcare facilities, and industrial halls. The models are developed and simulated using the Radiance lighting simulation tool. The space-gaining potential of the virtual windows is determined by comparing space availabilities, i.e. the percentage of space with workplane illuminance more than a certain level, in situations with either real windows or virtual windows only. Criteria concerning visual comfort glare indices and luminance ratios are also considered. The paper demonstrates a comparison of space availability and visual comfort in some building types with virtual windows, compared to those of real windows with CIE overcast sky. The building type with the largest space availability and relatively low glare indices will be considered as the one with the biggest potential.
Original languageEnglish
Title of host publicationProceedings of Lux Europa 2013 – the 12th European Lighting Conference, 17-19 september 2013, Krakow, Polen
EditorsP. Pracki
Place of PublicationKraków
PublisherPolski Komitet Oswietleniowy SEP
ISBN (Print)978-83-910849-6-0
Publication statusPublished - 2013
Event12th European Lighting Conference, Lux Europa 2013 - Krakow, Poland
Duration: 17 Sept 201319 Sept 2013


Conference12th European Lighting Conference, Lux Europa 2013
OtherLux Europa 2013


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