The principle of daylighting refers to the deliberate use of daylight to reduce the need for artificial light. Common sources include the basic window, skylights, or directional beams. Daylight is constantly changing in terms of colours, intensity, and direction.
Daylighting utilises interior illumination by enabling the sunrays to pass through the window or reflective surfaces. While skylights are the most popular choice for daylighting, they are not the most effective. The use of clerestory windows brings more light into a property. With proper placement, such windows can illuminate interior spaces for a longer.
Daylighting in Australia
In the country, north-facing windows bring sunlight and daylight into the home, especially during winters, when the sun is lower in the sky. South facing windows, on the other hand, allow daylight in without heat gain. This makes them ideal for houses in warmer climates where home cooling is essential.
The Use of Shutters
Installing adjustable shutters is beneficial in generating and controlling sunlight. Retrofitted shutters can also act as a daylighting system and sunshade. These can be used in both commercial and residential applications. They are also used as protective devices for hurricanes, tornadoes, and other weather conditions.
Controlling Sun Penetration
The use of vertical blinds is perfect for controlling the impact of extreme sunlight. The blinds are installed in east and west oriented windows and horizontal blinds on northern oriented windows. These are ideal for homes with large glass openings.
Daylighting can cut energy use by up to 75 per cent. This is mainly because it takes advantage of shading strategies and glazing technology to intensify daylight. This minimises heat gain during cooler seasons and heat loss during summers.
Daylighting requires an integrated design approach to be successful. This involves decisions about climate, building components, lighting control, and lighting design criteria. Homeowners building their new home can benefit from the benefits of daylighting by incorporating the right design aspects.