Passive Solar Architecture by David Bainbridge & Ken Haggard

Author:David Bainbridge & Ken Haggard [Bainbridge, David & Haggard, Ken]
Language: eng
Format: epub
Tags: Heating, Cooling, Ventilation, Daylighting, and More Using Natural Flows
Publisher: Chelsea Green Publishing
Published: 2011-06-30T21:00:00+00:00

Fig. 4.25. Natural light can be used in extremely hot-dry climates—but solar radiation must be diffused so light enters and heat does not. Interior light apertures are a primary design technique in this case.

Windows

For small buildings, natural lighting with windows is the best place to start. The building will have windows in the walls, so why not make them work for daylighting, natural heating, cooling, and ventilation? The incremental cost may be zero, or even pay a bonus as mechanical backup systems are downsized or eliminated. Windows can provide many benefits: views, good lighting for work, ventilation, cooling in summer, and heating in winter—but only if they are designed and installed correctly. Make the wrong choice, and they will provide unwanted heating in summer and cooling in winter.

Effective use of windows begins with proper building orientation, facing the equator, and a building shape that maintains thin elements that make daylighting with windows possible. The finger plan schools, with a series of very narrow, long buildings, of the 1950s were a good response to daylighting demands. Increasing the building perimeter adds to the cost, but provides the best potential for daylighting and natural heating, cooling, and ventilation. Taller ceilings as shown in figure 4.26 enable windows to be higher, increasing light penetration and facilitating ventilation and summer cooling. They can also help reduce glare and lighting discomfort.

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