Lighting control systems in individual offices at high latitude: measurements of electricity savings and users preferences

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Abstract in Undetermined
An efficient lighting control systems (LCS) should take advantage of the natural light available, but this presents some technical challenges as well as user related issues. So far, the assessment of lighting energy consumption of LCS has been based on technical features rather than the occupants’ acceptance.

This article presents the results of a monitoring study providing some recommendations based on the human and technical aspects of LCS in small scale applications.

Four identical peripheral office rooms located in Lund, Sweden, were equipped with four different LCS: manual switch at the door, presence detector, daylight dimming with absence detector and LED task lamp. Each occupant performed ordinary office tasks for two weeks in each room in April-May 2013. A subjective evaluation concerning the general lighting experience and the appreciation of the LCS was carried out.

The results indicate that the manual switch was greatly appreciated and it accomplished good energy performances (75% savings compared to the presence detector). The daylight-linked LCS achieved only slightly higher savings (79%), due to relatively high parasitic losses, but did not guarantee an optimal light environment. The desk lamp achieved 97% savings, but the lighting conditions were considered unacceptable by the office workers. In general, the participants in this study perceived all automatic controls as stressful.
Titel på värdpublikationEnergy Procedia
Antal sidor9
StatusPublished - 2014
EvenemangISES Solar World Congress, 2013 - Cancun, Cancun, Mexiko
Varaktighet: 2013 nov. 32013 nov. 7


ISSN (tryckt)1876-6102


KonferensISES Solar World Congress, 2013

Bibliografisk information

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Environmental Psychology (011036009), Energy and Building Design (011038110)

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