Research has proven that people are more productive in a well-lit room, especially when lit with daylight. Daylight intake should be maximized, controlled, and supplemented with artificial light to optimize building performance and provide comfort. Studies have also shown the benefits of natural lighting in a school environment, where pupils’ grades have improved.
Artificial lighting can amount to 35% of a commercial building’s energy costs! -maximizing the use of natural daylight and eliminating the need for artificial light can help significantly reduce these costs.
A key parameter: LT coefficient
The proportion of visible light transmitted to a room through glazing. The higher the ratio, the higher the natural light intake, resulting in less demand for artificial lighting during the day. Automated shading devices allow for a dynamic LT ratio.
Architectural solutions for maximizing daylight intake
The size of the openings and the type of glazing will determine the amount of light transferred and radiated into the building. Openings must be wide enough to allow sunlight to penetrate the room. Transparent glazing, unlike tinted varieties, ensures better quality lighting.
To maximize daylight intake and eliminate the problems associated with solar heat gain and glare, adjustable shading devices should be installed and effectively controlled.
1- Impact of shading on visual comfort in a working environment
A range of Somfy solutions features Suntracking functions to position shades and Venetian blind slats according to sun position.
Optimal use of shading devices
In order for solar shading to perform effectively automation is essential. Manual systems do not allow for optimal use of shading because they do not adapt to the needs of the building. Manual systems require operation from users throughout the day which is not always possible. In order for shading to be effective, it should be automatically controlled, responding to changes in temperature, light levels, occupancy, and time of day. This ensures occupants are protected from solar gain and glare in a comfortable working environment and the need for additional cooling is eliminated.
To optimize building performance solar shading should be effectively controlled and linked to timers and climate sensors, especially when a building is unoccupied.