The health benefits and the human desire for daylight are intuitively based on human evolution over the ages, and there is plenty of research demonstrating the effect of daylight on human health including its effect on our circadian rhythm-the regulation of our sleep/wake patterns and other important biological processes.
The energy codes and regulations tend to focus on the energy-saving aspects of daylighting, and often the visual comfort and occupant visual satisfaction is not part of the criteria. If measures for visual comfort are not considered, occupants will override the daylight system. For example, an occupant could pull the shade down as a result, the intended energy-savings goal will not be met.ĭaylight also has many subjective benefits that increase the quality of the interior environment. Consequently, some spaces lost their access to the outside view, leading to occupants’ dissatisfaction due to losing their visual connection to the outside environment and natural landscape. Using daylight has gained more attention recently because of its significant benefits, including being the most sustainable source of energy. The architectural layout of significant preindustrial buildings ensured that most enclosed spaces had access to daylight to reduce the use of candles, oil lamps, or gaslight. In the preindustrial era, the daylighting design was based on the past experience of the designer/builder or general guidelines. The introduction of electrical lighting transformed the architectural plan-without the necessary access to daylight.
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