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NATURAL EXPERIMENT ON THE EFFECT OF ARTIFICIAL LIGHTING AND DAYLIGHT
KTH MID. (Architectural Lighting Design)ORCID iD: 0000-0003-2562-2108
Stockholm University .ORCID iD: 0000-0002-6980-2971
2014 (English)In: PROCEEDINGS of  CIE 2014 "Lighting Quality and Energy Efficiency”, Vienna, AUSTRIA, 2014Conference paper, Published paper (Refereed)
Abstract [en]

We investigated the effect of the exposure to daylight and artificial light indoor during Scandinavian winter. Twenty-one subjects experienced two radically different lighting solutions for three days in a row, eight hours each day: one group (n=12) was exposed only to daylight, one (n=9) only to artificial electric lighting (>500lx average on work plane, 3000K). We observed an effect between light conditions on mood, which was elevated in the daylight room. Mean levels of alertness and perceived energy ratings were higher in the daylight condition. An effect of the lighting condition was found for activity levels as measured by the actigraphs, especially in the morning. Due to the experimental design it is at present difficult to tease out if observed effects were due to the lighting exposure or to other environmental factors, e.g. architectural layout, timing or intensity of the exposure, therefore future further studies would be needed to examine different combinations of factors.

Place, publisher, year, edition, pages
Vienna, AUSTRIA, 2014.
Series
CIE x039:2014
Keywords [en]
office environment, school environment, sleepiness, mood, space perception
National Category
Engineering and Technology Design
Research subject
Art, Technology and Design
Identifiers
URN: urn:nbn:se:kth:diva-254551ISBN: 978-3-902842-49-7 (print)OAI: oai:DiVA.org:kth-254551DiVA, id: diva2:1333540
Conference
CIE 2014 Lighting Quality and Energy Efficiency
Funder
Bertil & Britt Svenssons Stiftelse för Belysningsteknik
Note

QC 20190826

Available from: 2019-07-01 Created: 2019-07-01 Last updated: 2019-08-26Bibliographically approved

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CiteExportLink to record
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  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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Language
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  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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Output format
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  • asciidoc
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