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Figure 12: Predicted cumulative annual exposure of art work to daylight (courtesy National Trust, England)
Summary
Both the basis for daylight evaluation and the role that it plays
in the building design pro- cess are at a crossroads. The
increasing importance that daylight has in the performance
evaluation of buildings for compliance purposes has led to a re-
evaluation of much of the ‘accepted wisdom’ that has passed
down over the years. Scientists are now beginning to under-
stand the mechanisms and processes for various daylight-
related phenomena generally referred to as non-visual effects.
Sooner or later we can expect these effects to figure in the gui-
delines and recommendations for the daylighting of buildings.
In the near term however we will see the emergence
of performance criteria founded on climate-based day- light
modelling. It would appear timely therefore to reevaluate the
teaching of daylight and daylight modelling to architecture
students. The author hopes that this chapter will assist in those
deliberations.
1
Building Research Establishment Environmental Assessment
Method http://www.breeam.org
2
Leadership in Energy and Environmental Design program by
the U.S. Green Building Council.