Clerestory
From Swikipedia
Introduction
A Clerestory is an architectural form, the walls of which rise above the rooflines of the lower aisles and are pierced with windows. The purpose of the clerestory is to provide daylight to the inner space of a large building.
Brief Description
The use of clerestory windows results in reducing or eliminating the need to use electrical lighting during the day. Though they are typically fixed, they can be made operable, providing a means of cross-ventilation for a building. Clerestory windows increase the amount of natural sunlight in the building, and they can also be installed in a thoughtful manner depending on the level of heat gain desired. For instance, to increase natural lighting without increasing direct heat gain that can potentially overheat the home, clerestory windows can be shaded by awnings or roof overhangs. They can also be installed on the north side of the home, where they won’t be exposed to the highest level of direct sun. On the other hand, to increase heat gain in the home, clerestory windows can be installed on the south side, where solar windows are placed. Here, one can include a low-emissivity coating to reduce heat loss. In the winter, the south-facing clerestory windows invite heat in from the sun. In the summer, trees and window shades can help minimize excessive heat gain.
Uses:
An area where daylight is required, but privacy is an issue, clerestory windows can be used as they are located high on the wall and allow natural light into a space without compromising privacy.
They are used in numerous forms of architecture – a popular feature in churches, large buildings, and even factories.
As they rise above adjoining roofs, clerestory windows can be used to light an interior room that wouldn’t otherwise be exposed to windows.
Clerestory windows can also be a creative way to join two distinct roof sections.
Advantages:
Creates a longer, diffused light internally
A useful way of addressing ‘overlooking’ objections
A way to emphasize a building’s roof shape
References:
http://en.wikipedia.org/wiki/Clerestory
http://solar.calfinder.com/blog/solar-information/clerestory-windows-highlight-passive-solar-homes/
http://www.remodelingcenter.com/replacement-windows/clerestory-windows/
