This paper presents the results of a field experiment evaluating if a new double dynamic lighting concept could improve visual comfort, perceived atmosphere, and work engagement in an office environment. The investigation is targeted to develop design strategies and methods by testing the complex interplay with the dynamics of daylight and electrical lighting. The double dynamic design concept is based on the design idea of adding direct lighting as task light with a directionality referring to the inflow of the daylight from side windows. A variation of direct/diffuse lighting and respective changes in color temperature respond to different sky conditions and daylight levels. This field experiment took place in an office at Aalborg University in Copenhagen. Four participants worked for four months in static and dynamic lighting, with seven different possible settings responding to a daylight sensor in the room and a sky scanner on the roof. Visual comfort, perceived atmosphere, and work engagement were evaluated through a convergent parallel mixed method approach with interviews and questionnaires. The described studies helped to develop a possible definition of a responsive dynamic lighting settings reacting to the dynamics of daylight through a combination of direct and diffuse lighting. Furthermore, the results indicate that dynamic lighting has a positive effect on visual comfort, perceived atmosphere, and work engagement compared to static lighting. Future studies on the perceived effects of lighting could include this parallel mixed method approach and more dynamic variables could be defined and tested in a larger field study.
|Tidsskrift||Indoor and Built Environment|
|Status||Accepteret/In press - 2020|
Hansen, E. K., Bjørner, T., Xylakis, E., & Pajuste, M. (Accepteret/In press). A field experiment of double dynamic lighting in an office responding to sky and daylight: Perceived effects on comfort, atmosphere, and work engagement. Indoor and Built Environment.