How does a smoke ventilation system work?
In their most basic form, smoke vents are openings, such as windows or skylights, that offer an escape route for smoke and hot air. AOV’s are smoke vents that work automatically when fire breaks out. When the sensors detect fire or smoke in the building, they open a roof vent or window to allow the smoke to escape.
What is smoke extraction system?
Smoke extraction consists in evacuating part of the smoke produced by the fire by creating a height of free air under the layer of smoke. The goal is : − To facilitate the evacuation of the occupants − To limit the spread of fire − To allow firefighters access to the premises.
Do I need an AOV?
To comply with the latest building regulations every communal stairwell must have an Automatic Opening Vent to extract smoke. Most large buildings contain sufficient air to sustain a substantial fire, so the well known domestic advice to shut all doors in the event of a fire do not apply.
How do I circulate the air in my basement?
Floor fans and a dehumidifier are additional options that may help keep a basement adequately ventilated. Another option is to install exhaust fans that connect to vents located throughout the basement. These fans can be permanently installed in windows or might require cutting through a basement wall to install.
How do you close a smoke vent?
3 Ways Smoke Vents Close
- Manual – from the rooftop.
- Winch – This option is frequently used in theatre applications where they are rigged down to the stage floor so you can crank the winch to close the doors.
- Motorized Control – These include open/close push button controls and electrical relay ties into the fire alarm.
What is natural smoke ventilation?
Natural smoke ventilation uses the inherent buoyancy of hot smoke and the airflow dynamics of smoke and air to remove smoke. The use of Automatic Opening Vents (AOVs) at a high level within a building allows smoke to escape from the building when a fire is detected at the vents are automatically opened.
How does a smoke control system extract smoke?
A smoke control system utilises the behaviour of buoyant hot air to try and maintain the hot smoke layer above the breathing zone of building occupants so they have sufficient time to escape the fire affected space.
Can a door be an AOV?
BAC can provide Fire doors and AOV services to suit any type of property or application. From the supply and installation of internal and external fire doors, to the provision of standalone or Fire Alarm linked smoke ventilation systems.
How often should AOV be tested?
once a month
AOVs and electrically operated OVs should be tested once a month using the manual controls to ensure they are working as intended. In addition, once a year, a full test should be performed which includes checking the functionality of smoke detectors and AOV controls.