Lighting quality and office work: two field simulation experiments

Abstract

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1191/1365782806lrt161oaLighting Research and Technology, 38, 3, pp. 191-223, 2006-09-01 Lighting quality and office work: two field simulation experiments Boyce, P. R.; Veitch, J. A.; Newsham, G. R.; Jones, C.; Heerwagen, J.; Myer, M.; Hunter, C. M. A version of this document is published in / Une version de ce document se trouve dans : Lighting Research and Technology, v. 38, no. 3, Sept. 2006, pp. 191-223 Lighting Research &Technology , v. 38(3) (2006) AbstractThis paper describes two experiments concerning the effects of variations in lighting quality on office worker performance, health, and well-being. Experiment 1 had four experimental conditions: a regular array of fully direct recessed parabolic luminaires; direct / indirect luminaires with no control; direct / indirect luminaires with a switchable desk lamp; and, workstation-specific direct / indirect luminaires with control over the direct portion. Experiment 2 contrasted two conditions with no individual lighting control: a regular array of recessed prismatic lensed luminaires, and suspended direct / indirect luminaires. Participants considered the direct / indirect systems to be comfortable than the direct-only systems, with a further increase in comfort associated with individual control in Experiment 1. There were no simple main effects of lighting quality on the performance of any task, although the expected changes in performance associated with task visibility, practice, and fatigue were found. Interactions between lighting quality and time suggested that having a degree of individual control of lighting tended to maintain motivation and vigilance over the day.

Effect of daylight saving time on lighting energy use: A literature review

“…Daylight harvesting systems are now available that sense prevailing daylight levels and automatically dim electric lighting accordingly (Lee and Selkowitz, 2006). Personal control systems are also being marketed that allow for dimming control of lighting even in open-plan spaces (Boyce et al, 2006). The market penetration of these systems in low, particularly in North America, but is expected to grow as the hardware becomes cheaper and energy becomes more expensive.…”

Task lighting effects on office worker satisfaction and performance, and energy efficiency

“…Studies have been conducted that allowed participants to modify task light output to match their preferences. Boyce, Veitch et al [2003] conducted two experiments in a simulated office environment. Of the six lighting conditions they studied, two are of interest here.…”

Amabilidad visual: sistemas de sombreado

“…La amabilidad visual abarca la respuesta humana a la iluminación natural que va más allá de la visibilidad e incorpora los aspectos psicológicos (Ruck et al, 2000). Las recomendaciones visuales basadas únicamente en parámetros de capacidad visual son generalmente limitadas (Boyce et al, 2006). Estos valores no son totalmente representativos sin ser contrastados con las ponderaciones o valoraciones del usuario, permitiendo así llegar a un balance entre los parámetros de eficiencia de la tarea evaluada y los factores de confort del usuario.…”