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Dimming strategies for open office lighting: User experience and acceptance
Philips Lighting B.V., Eindhoven, the Netherlands.
Department of the Built Environment, Building Lighting Group, Eindhoven University of Technology, Eindhoven, the Netherlands.
Department of the Built Environment, Building Lighting Group, Eindhoven University of Technology, Eindhoven, the Netherlands.
Department of the Built Environment, Building Lighting Group, Eindhoven University of Technology, Eindhoven, the Netherlands.
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2019 (Engelska)Ingår i: Lighting Research and Technology, ISSN 1477-1535, E-ISSN 1477-0938, Vol. 51, nr 4, s. 513-529Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Sensor-triggered control strategies can limit the energy consumption of lighting by considering the presence of users in the office and dimming lighting down when it is not needed. In multi-user offices, the application of occupancy-based dimming at room level limits the energy saving potential. However, zone- or desk-based dimming may affect the comfort of co-workers due to its dynamics. This paper reports the assessment by 17 participants (30–50 years of age) of occupancy-based dimming in a mock-up office, using different dimming speeds. Participants consisted of co-workers experiencing changes triggered by others, and actors triggering these light changes. While the participants performed an office-based task, the luminaire above the actors’ desk was dimmed from approximately 550 lx to 350 lx (average horizontal illuminance), and vice versa. The participants evaluated the dimming conditions regarding their noticeability and acceptability. The study showed that the noticeability of light changes due to dimming, increases when fading times become shorter. Dimming with a fading time of at least two seconds was experienced as acceptable by more than 70% of the participants. The results of this experiment provide insights to system behaviour that does not compromise user experience while addressing energy efficient use of electric lighting.

Ort, förlag, år, upplaga, sidor
Sage Publications, 2019. Vol. 51, nr 4, s. 513-529
Nationell ämneskategori
Arkitekturteknik
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URN: urn:nbn:se:hj:diva-39443DOI: 10.1177/1477153518772154ISI: 000471123500004Scopus ID: 2-s2.0-85047421340Lokalt ID: PP JTH 2019;JTHByggnadsteknikISOAI: oai:DiVA.org:hj-39443DiVA, id: diva2:1206117
Tillgänglig från: 2018-05-16 Skapad: 2018-05-16 Senast uppdaterad: 2020-01-21Bibliografiskt granskad

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