Progressively Lighter: Office Lighting Design in the Ecotrust Building

Intro | Hypothesis | Methodology | Results | Analysis | Conclusions | Appendix
Conclusions: Recommendations | Future Study

Conclusions

Recommendations

 
  • Utilize available daylight as much as possible
  • Increase daylight distribution/penetration
  • Increase efficiency of electric lighting
  • Concept of daylight / electric zones

Utilize Available Daylight as much as Possible

Carefully examine the decision to locate the enclosed, opaque conference room volume in a prime area of the daylit zone. Moving this volume away from the South wall (perhaps to the East wall) provides three benefits: 1) it frees up a large area of daylit floor space that is currently wasted; 2) it allows daylight to penetrate penetration further into the room, and 3) it increases the overall brightness of surfaces in the office, which makes the entire space feel brighter.

Increase Daylight Distribution/Penetration

Extend the skylight: Clearly this is the single most effective modification to the daylighting strategy for the space. If done in conjunction with moving the conference volume, the increase in perceptual brightness is especially improved.

Increase Energy-Efficiency of Electric Lighting

Make more efficient use of existing energy - get fixtures that direct light downward, or hang light-reflecting baffles over lights to reflect light toward task surface. We anticipate that this change will provide a significant increase in incident ambient electric light levels. It may even turn out to be overlighting the space, which would mean that energy use could be reduced.

Concept of Daylight / Electric Zones

Our exploration of daylighting redesigns reveals the difficulty of daylighting the portions of this office space that are further from the windows. It would be more appropriate to implement the concept of two lighting zones - one primarily daylit, one primarily electrically lit. Peripheral spaces near walls with windows can rely primarily on daylight for task surface illumination. The remainder of the space would rely on electric lighting, preferably a configuration that performs more efficiently than the existing electric lighting.


Future Study

 


Daylighting Explorations

  • Change volume/proportions of room, through dropped ceiling or other such intervention
  • Provide more precisely located toplighting to illuminate reflective surfaces, such as walls or other diffusing architectural elements (affect the perceptual/subjective luminous character of the space)
  • Explore issues of glare that may arise from the creation of a daylit work zone