Install daylight-activated lighting controls. To save energy, lights are dimmed or turned off with controls. Automated lighting controls in a daylighted building can have other cost-saving applications (e.g., occupancy, scheduling) and benefits.
Integrating lighting and daylighting controls with a BAS requires coordination between the lighting engineer and the BAS design engineer. Open protocols such as BACnet, LonWorks, and Modbus enable products from different manufacturers to work together.
What is Daylighting? Daylighting combines building orientation, fenestration (e.g., the location of windows and openings in a building), shading devices, interior design, and lighting and controls.
What is a daylight system? Daylighting is when direct sunlight and diffused skylight are let into a building in a controlled way. This cuts down on the need for electric lighting, which helps reduce the buildings use of energy.
A good daylighting design can save up to 75% of the energy used for electric lighting in a building. The amount of daylight available, the occupancy pattern, and the control strategy can all affect energy savings.
Glass, Daylighting, and Interior Natural Light for Well-Being. There are several key reasons to promote daylighting in buildings. First, daylighting reduces the need for artificial lighting and makes buildings more energy efficient.
4. Control of Glare and Heat. Glare from uncontrolled sunlight can make spaces uncomfortable. Designers should consider using translucent glazing materials, tubular daylighting devices, shading devices or adjustable louvers to maintain comfort without sacrificing light quality.
