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Comparison between lighting performance of a virtual natural lighting solutions prototype and a real window based on computer simulation
Building Physics and Services, Department of the Built Environment, Eindhoven University of Technology, Eindhoven, Netherlands.
Sustainable Energy Technology, Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands.
Building Physics and Services, Department of the Built Environment, Eindhoven University of Technology, Eindhoven, Netherlands.ORCID iD: 0000-0001-7520-1593
Building Physics and Services, Department of the Built Environment, Eindhoven University of Technology, Eindhoven, Netherlands.
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2014 (English)In: Frontiers of Architectural Research, ISSN 2095-2635, E-ISSN 2095-2643, Vol. 3, no 4, 398-412 p.Article in journal (Refereed) Published
Abstract [en]

This article discusses the measurement and simulation of a first generation prototype of Virtual Natural Lighting Solutions (VNLS), which are systems that can artificially provide natural lighting as well as a realistic outside view, with properties comparable to those of real windows and skylights. Examples of employing Radiance as a simulation tool to predict the lighting performance of such solutions are shown, for a particular case study of a VNLS prototype displaying variations of a simplified view of overcast, clear, and partly cloudy skies. Measurement and simulation were conducted to evaluate the illuminance distribution on workplane level. The key point of this study is to show that simulations can be used to compare an actual VNLS prototype with a hypothetical real window under the same sky scenes, which was physically not possible, since the test room was not located at the building[U+05F3]s façade. It is found that the investigated prototype yields a less rapidly drop illuminance distribution and a larger average illuminance than the corresponding real window, under the overcast (52 lx compared to 28 lx) and partly cloudy (102 lx compared to 80 lx) sky scenes. Under the clear sky scene, the real window yields a larger average illuminance (97 lx) compared to the prototype (71 lx), due to the influence of direct sunlight. © 2014 Higher Education Press Limited Company.

Place, publisher, year, edition, pages
2014. Vol. 3, no 4, 398-412 p.
Keyword [en]
Light, Prototype, Simulation, View, Virtual Natural Lighting Solutions, Virtual window
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:hj:diva-31841DOI: 10.1016/j.foar.2014.07.001ScopusID: 2-s2.0-84943011576OAI: oai:DiVA.org:hj-31841DiVA: diva2:973853
Available from: 2016-09-23 Created: 2016-09-23 Last updated: 2016-09-23Bibliographically approved

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Aries, Myriam
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