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An activation mode for each pollutant

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  3. An activation mode for each pollutant

Innovative technology : intelligent sensors

 

Aereco ventilation components include smart sensors that manage the airflows according to the needs and to the inner pollution. Different sensors are proposed in the products, depending on the room type and of the pollution.

Major activation modes of Aereco system’s :

Humidity sensitive airflow

Principle: the airflow is controlled by the local relative humidity.

 

The detector and actuator of the humidity sensitive products, the sensor, makes use the tendency of polyamide strips to become longer when the relative humidity of the air increases and shorter when it decreases. This principle is used to activate one or more shutters, thereby adjusting the passage of the air according to the ambient relative humidity. The higher the humidity in the room, the wider the shutters open. The sensor is isolated from the incoming airflow; it measures only the interior moisture content. Moreover, thanks to a thermal correction, the opening of the shutters is unaffected by the external climatic conditions. Aereco’s humidity sensitive technology is applied to air inlets, grilles, and exhaust units located in the rooms where the humidity reflects the level of indoor pollution (lounge, bedrooms, bathrooms).

Airflow activated by a presence detector 

Principle: automatically increase the airflow when a presence is detected in the room.

 

The presence of somebody in the room automatically activates the detector, which then opens the shutters of the exhaust unit for maximum airflow. This process is used when moisture is not sufficient to reveal of a high pollution level. This technology makes it possible to save heating energy during the period of non-detection. The presence detection module comprises a pyroelectric sensor that detects infrared radiation focused by a Fresnel lens, with a 4-meter range and a 100° angle of detection. The presence detection technology is used on exhaust units and mechanical ventilation terminals in rooms where the relative humidity cannot be used as an indicator of the pollution level (toilets, offices, etc.).

Airflow activated manually or by a remote control 

Principle: let the occupant increase the exhaust airflow at times of intensive pollution.

 

Where the relative humidity cannot be used as an indicator of high pollution (kitchen, toilets, etc. in use) the occupant can manually activate the maximum airflow at the exhaust unit to quickly evacuate stale air, unpleasant odours, and excess moisture. This boost can be activated by a push button (‘on-off switch’), by pulling a cord, or through a remote control. This function can also supplement a humidity sensitive function on an exhaust unit.

Airflow activated by a CO2 or VOC sensor  

Principle: control the airflow automatically according to the level of CO2 or VOC.

 

Both sensors operate the same way: the opening threshold is selected at the time of installation. When the level of CO2 (or of VOC, depending on the version of the product) is below the opening threshold, the airflow is at the baseline rate (minimum). When the level of the pollutant rises above this threshold, the exhaust grille opens to the maximum airflow for as long as the level of pollution exceeds the preset threshold.