Demand Control Ventilation
Better air renewal for greater comfort
By providing the most ventilation for the places that need it most, Aereco’s demand controlled ventilation systems largely contribute to improving air quality in dwellings. When a main room is occupied, its relative humidity increases; the air inlets then open more to increase airflow and better evacuate stale air. Activity in wet rooms (kitchen, bathroom, toilets, etc.) is accompanied by water vapour emissions; the opening of the exhaust units increases with the relative humidity, increasing the airflow and so evacuating polluted air more rapidly.
Protection against moisture
The higher relative humidity generated by breathing and human activity in the kitchen or shower, for example, can lead to destructive condensation, in which moulds can grow. When the relative humidity increases dangerously, humidity sensitive exhaust units open quickly to evacuate excess moisture and eliminate the risk of condensation.
Reduced and controlled heating consumption
Ventilation is often held responsible for a large share of the thermal losses in a dwelling, sometimes as much as 50 %. While this is true of the majority of traditional ventilation processes, Aereco systems preserve heat in less occupied rooms and dwellings by automatically reducing the airflow.
Numerous additional benefits
In addition to combining indoor air quality and energy savings optimisation, demand controlled ventilation demonstrates many indirect benefits resulting from the reduction of average airflow:
Reduced power consumption
By reducing the average airflow rate, demand controlled ventilation systems allow the exhaust fan to work well below the maximum airflow, thus at a very low power. This aspect clearly promotes unbalanced demand controlled ventilation systems such as those from Aereco, when compared with the standard heat recovery ventilation systems that typically have two motors operating at a higher speed (with higher average airflow), and are then particularly penalized in terms of environmental impact and consumption of electrical energy (primary notably).
Less clogging of filters, air ducts and terminals
The inherently reduced airflow of demand controlled ventilation leads to the reduction of the total amount of particles that can clog the components that make up the demand controlled ventilation system, which is directly proportional to the total volume of air introduced by the ventilation system in any given period. Thus, maintenance of air ductwork and filters (where these have been used), can be reduced with the power consumption of the demand controlled exhaust fan (when presence of filters).
Increased life of demand controlled exhaust fans
By reducing average airflow over the year, demand controlled ventilation permits a reduction of the demands placed on the exhaust fan, and thereby increases its longevity. This is because the longevity of the exhaust fan depends in particular upon the power at which it works, and that power is directly related to the request of average airflow through the ventilation system.
Greater availability of airflow for terminals
In a collective air ductwork system, serving either an individual home or collective dwellings, the airflow modulation at the various vents permits the avoidance of overloading the air ducts with unnecessary airflow rates, as would be the case with a constant airflow ventilation system. Thus, the rooms or dwellings with a low airflow requirement release the air duct space for the rooms or dwellings with a higher need for ventilation. These can then benefit from the demand controlled ventilation, from all the pressure and flow potential of the air ductwork, with losses in the air ducts being optimized and reduced.