The risk of a fire outbreak exists in every building, and its level depends on the technical condition of the building and the way it is used. Although the risk of fire can be reduced, it cannot be eliminated. How do you protect people and property from loss?
A few words about smoke extraction methods
A common solution that gives you a chance to protect yourself from human casualties is to use a proper gravity smoke extraction system. Effectively moving smoke out of the interior of the building, it provides time for efficient evacuation from the threatened area and helps with firefighting operations. Let's find out what elements are necessary for the operation of such devices and see how they work.
What does a gravity smoke extraction system consist of?
A gravitational smoke extraction system is primarily smoke dampers mounted on the roof triggered by a properly selected control installation. The gravitational smoke extraction system can be triggered in two ways - using a 24V electrical system equipped with a system of smoke detectors, alarm buttons connected to a special control panel, or we can also deal with a pneumatic smoke extraction control system. Such a system is triggered by compressed CO2 gas, released from special cylinders after tripping a thermal fuse.
The said system can be a standalone installation or can be part of a fire alarm system located in the facility. The gravitational smoke extraction system can also be equipped with additional functions. One such function is the ventilation function that allows quick and efficient ventilation of the facility during its daily use.
How does gravity smoke extraction work?
The gravity smoke extraction system works by making the heated gases thinner, so they can rise upward. Thanks to the opening of smoke dampers, the resulting fire gases can therefore enter higher floors and escape to the outside.
Appropriate aeration openings are responsible for equalizing the pressure inside the facility. For aeration, the most common are gates or doors, installed in the walls of buildings. Thus, the access of fresh air allows to get rid of fumes, which are not only extremely toxic, but also significantly reduce visibility.