Ventilation in tertiary buildings
In buildings used for purposes other than residence, in order to limit thermal losses, the most effective solution is to adapt the air renewal flow rates to the actual occupancy of the rooms. Indeed, the occupancy rate (usage frequency x occupancy ratio) of rooms such as offices or meeting rooms is highly reliable.
What type of ventilation do we use?
"All or nothing" ventilation
This solution allows savings of up to 35% on air renewal flow rates.
Principle:
- When the room is unoccupied, during the operating period of the ventilation, the airflow should correspond to 10% of the nominal flow and is intended for pre- or post-ventilation.
- When the room is occupied, the nominal flow is achieved through presence detection.
Product used:
DIP presence detector
"Proportional" ventilation
This solution allows savings of up to 70% on air renewal flow rates.
Principle:
- When the room is unoccupied, the flow rate corresponds to 10% of the nominal flow, as with the “all or nothing” system.
- With variable occupancy, the air renewal flow adjusts to the number of people according to the level of carbon dioxide (CO2).
- With maximum occupancy, the flow reaches the nominal rate.
Product used:
DIP presence detector
Single zone
The fan controls a single room (e.g., meeting room). In the “all or nothing” solution, the fan must ensure 2 flow rates (minimum and nominal). In the “proportional” solution, the fan speed must adapt to the actual occupancy conditions of the room.
| “All or nothing” ventilation | “Proportional” ventilation | |
|---|---|---|
| Sensor | Presence detector | CO2 wall sensor / CO2 duct-mounted sensor |
| Control | 2-position VEM 5 AUTO controller for AC motors Integrated in ventilation units for EC motors | 2-position VEM 5 AUTO controller for AC motors Integrated in ventilation units for EC motors |
| Compatible ventilation type | Single Flow / Double Flow | Single Flow / Double Flow |
Multi-zone
The fan controls several rooms (e.g., meeting room + office). With a configuration that may be “all or nothing” or “proportional,” sensors or probes act on the terminals (diffusers, all-or-nothing dampers, proportional dampers, etc.) causing the fan to adapt to demand variations.
| “All or nothing” ventilation | “Proportional” ventilation | |
|---|---|---|
| Sensor | Presence detector | CO2 wall sensor / CO2 duct-mounted sensor |
| Control | 2-position VEM 5 AUTO controller for AC motors Integrated in ventilation units for EC motors | 2-position VEM 5 AUTO controller for AC motors Integrated in ventilation units for EC motors |
| Compatible ventilation type | Single Flow / Double Flow | Single Flow / Double Flow |
Where we apply our systems
Professional Areas
Shopping Centers
Schools and Universities
Single-Flow VMC in tertiary buildings
System designed for the individual extraction of stale air and renewal in buildings based on constant airflow rates. Its operation, based on the principle of air sweeping inside the spaces, is completely independent between them, offering an excellent balance between guaranteed indoor air quality and energy autonomy according to occupancy and use.
The stale air is extracted from the rooms through constant airflow self-regulating outlets connected to the ventilation unit via ducts. The system can be equipped with CO2 or presence detectors.
Double-Flow VMC in tertiary buildings
Ventilation system that ensures air quality by extracting stale air from humid rooms while simultaneously supplying filtered fresh air into dry rooms.
Thanks to the heat recovery core, up to 95% of the energy from the exhaust air can be recovered.
