Installing a hallway exhaust system is essential. To prevent the unexpected from happening. However, there are many construction units that are often subjective and ignore this installation part. To understand the importance of installation more. The following article by P69 Mechanical Factory Will share with you the projects that need to use the smoke extraction system for the stairs
The concept of corridor smoke exhaust system
The corridor smoke exhaust system can be understood simply as a system of equipment installed in buildings such as schools, apartments, commercial centers, high-rise buildings… They have the main purpose of ensuring The air source is always ventilated in the event of a fire incident. Thereby ensuring the safety of the evacuation and escape process of the people living and working inside.
Structure of the corridor smoke exhaust system
The corridor smoke extraction system in buildings usually includes a blower for smoke extraction, air ducts, air intakes, air outlet, fire extinguishing valves, one-way air valves, sensing devices, cabinets power supply, and control. In there:
– The blower used to extract smoke is usually installed on the roof.
– The air duct system is installed on a vertical axis connecting the roof fan to the 1st floor. –
– These air ducts are usually made from corrugated iron.
– In the corridor of each floor, there is also a system of air ducts connected to the vertical axis ducts. On the corridor duct system, additional air outlets will be installed to suck smoke from the corridor area when a fire occurs.
– In addition to the power supply cabinet for the roof fan, the smoke exhaust system also has a push-button cabinet. This push-button cabinet is usually located in the fire protection room located on the 1st floor, these push-button cabinets are arranged with push-button ON, OFF to directly control the fire stop valve on each floor.
The role of the corridor smoke exhaust system
The role of the corridor smoke exhaust system is to keep smoke and toxic fumes away from areas and exits. The system will proceed to suck smoke from the fire through the pipe. Then discharge directly out.
This helps to keep the exits along the stairs in a clear state. And create conditions for everyone to quickly find a safe shelter, hold out while waiting for the rescue team to come to help.
Besides, the corridor smoke exhaust system also brings the following benefits:
1. Protect human life
In the event of a fire, the system helps protect the lives of those living and working inside by removing smoke from areas such as emergency exits or temporary shelters.
2. Protect property, wealth
The spread of smoke into areas containing important and valuable equipment such as equipment, data processing facilities, etc. will cause significant damage, the corridor smoke exhaust system will be minimized to a minimum. this multiple conditions.
3. Fire prevention support
In order for fire prevention to be effective, and at the same time to prevent smoke from entering the burnt floor from spreading to other floors, the elevator shafts or stairs need to be maintained at differential pressure. The corridor smoke exhaust system when combined with the stair booster system will do this.
Working principle of corridor smoke exhaust system
When there is a fire. At the beginning of a fire, smoke and heat will be generated. Temperature sensor system. The smoke sensor of the fire protection system will transmit the signal to the blower. Immediately the blower will work. The duct system will transfer all the smoke through the intake to the fan. Discharge into the environment through the outlet.
At the same time, the system of bells and fire alarm lights works to warn people operating in the buildings to evacuate to the corridors to run to the exits. Unlike the stair booster system, which always maintains positive pressure in the elevator chamber. Stair’s booster system only works and takes effect when there is a fire. Because it makes the corridor – lobby reduce smoke. Make exits visible to exits.
The pressure at those locations is negative. The fire when it became big. Generating high temperatures will affect the fire stop valve causing the fuse in the valve to melt. The fire stop valve closed. Prevent the fire from spreading to the floors or other areas of the building.
As can be seen, the smoke extraction system for the stairs is extremely necessary. Because of the smoke extraction system for the stairs. Help people escape during a fire. The fire is easy to identify, and the rescue forces will reduce the workload. Since then, the safety of people is guaranteed
Above are the shares of the P69 Mechanical Factory about whether it is necessary to use the smoke extraction system for the stairs? If you have any further questions or need further advice, please contact us at the following address:
Contact information P69 Mechanical Factory
Address: Km 18, Thang Long Boulevard, Thach That Quoc Oai Industrial Area, Hanoi
Headquarters: No. 06/165C, Xuan Thuy, Cau Giay, Hanoi
Telephone: 09666 86 969
Hotline: 0989 188 982