Ventilation

Natural Ventilation & Natural Light In A Single Installation

The SunScope system provides controlled natural ventilation combined with the SunPipe natural light system.

The prevailing wind pressure carries a continuous fresh air supply through weather-protected louvres on the windward side of the system at roof level. The wind movement is encapsulated by internal quadrants which turn the wind through 90şs forcing it down through internal air ducts into the room below, slightly pressuring the internal space.

Warm, stale air is expelled from the room by the Passive Stack ventilation principal of differential temperatures and the natural buoyancy of air movement. Adjustable grilles or motorised dampers at the base of the system control the rate of ventilation. The central SunPipe tube integrated into the system conveys natural daylight to the same room or internal area.

Four fully modulating dampers are arranged around the base of the SunScope system and are fitted with Bellimo motors. These motors can be linked to the building BMS system and modulate by 10şs increments, as the internal temperature rises above 17şsC.

The SunScope has the unique advantage that with air intakes on all four sides, it does not matter which way the wind is blowing since one side of the system will always act as the air intake whilst the opposite side, being in the low pressure zone, related to the system, becomes a natural extract to the room. When the wind changes direction so the intake and extract will also change their function.

The system is designed to produce an air change rate of 5-6 air changes per hour when the dampers are 50% open and there is a minimum external windspeed of 3 m/s.

Night-Time Cooling

Another major advantage of the SunScope is that the BMS system can fully open the dampers at night-time to allow the prevailing wind movement to force fresh air down into the room below.

This not only provides a cleansing effect, removing stale odours from the room, but achieves it without compromising the security of the building.

Winter Operation

During winter months the dampers can be set to 3% - 5% open. This will allow trickle ventilation whilst avoiding problems of cold draughts entering the building.

The limited cold air intake, being denser than the ambient air falls to low level allowing the warmer stale air to rise and exit through the controlled ventilation openings.