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Colt Controllable solar shading systems enable the building to "react" to the changes in the weather and to the sun's position so as to optimize the flows of heat and light energy through the façade. This in turn may have a positive effect on reducing the heat load and glare, and enhancing the use of natural daylight, thereby reducing the operating costs of the building.
As a standard, all Colt Control Systems have a built in sun path program, meaning that they know the exact relationship between the building’s facades and the solar azimuth.
The ICS4-Link control system has modem connection which allows remote monitoring and maintenance access for Colt for diagnostic purposes as well.
Initially we start with two different operating modes, as described below:
- Sun tracking, where the louvers move perpendicular to the projected sun's rays (vertical shadow angle –VSA). This is used generally where there is the need of direct sunlight prevention from entering the space.
- Daylight optimization, where a balance is struck between reducing heat energy and enhancing light energy. The mathematical algorithm allows the louvers to open to an amount just to avoid having direct sunlight passing through the gap of 2 louvers next to each other when there is direct sun light.
During winter the louvers may move automatically in open position to allow solar radiation passing through the windows to support the heating system thus to increase passive solar heat gain. When it’s overcast the louvers have to rotate automatically to their open position to maintain certain daylight levels. An external mounted light sensor operates as a threshold input.
Features
Sunlight sensing makes the louvers move to sun tracking mode when there is direct sun light detected, but when it is cloudy they then move to a pre-set position in order to optimize daylight entry.
The system calculates inputs from wind, rain and external temperature (optional) to protect the louvers in storm conditions furthermore to help reducing loads transfer to supporting façade structure. Frost sensing can inhibit the movement of devices.
Temperature sensing can determine the optimum control regime for the day, when shading is used to control overheating.
All parameters can be altered.
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