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Environmental control pressurization fans are a very important automation system that ensures the correct flow and direction of air in the facility. These products are used in the context of fighting during fire or for smoke evacuation and overpressure systems.
In today's buildings, the stairwell shafts have a better fire resistance than the rest of the building. In other words, they help protect the stairwell so that people can get out in an emergency while the rest of the building is burning. When a fire breaks out inside a building, the stairwell pressurizer fan forces fresh outside air into the stairwell to prevent smoke from blocking the escape route.
In this context, in the event of a fire in a building with high floors, the stair pressurization fan uses clean outside air to pressurize the air in the stairs. The compressed air created in this case helps people escape from the fire and firefighters fight the fire. ERF Group has highly professional and innovative technology-adapted features in environmental control pressurization fans.
Staircase pressurization is very advantageous as it ensures that the stairwell has much more pressure than the rest of the building during a fire. In this way, when the doors are opened, the high pressure created in the stairwell pushes the smoke back to the ground, ensuring that the escape route is completely clear of smoke.
The smoke-free escape route also functions as a smoke-free entry route for firefighters fighting the fire. The smart fire alarm system automatically starts working when it detects smoke. If the firefighters have not turned on the stairwell pressurization fans while the fire department is fighting the fire, this fire alarm system is immediately turned on by the firefighters. When people living in the building escape from the fire and open the doors to reach the stairs, the smoke in question rises from the fire floor to the stairwell. The ERF Group environmental control pressurization system pushes the smoke back to the ground and keeps it away from the stairwell. In this way, the air in the space formed in the stairwell is pressurized.
The functions of the environmental control pressurization fan are to prevent smoke from entering the fire escape and elevators, to provide human access to a fire-free environment and to provide a convenient access route for firefighters. According to the regulation on the protection of buildings other than residential buildings from fire disasters, since the height of the stairwell in all buildings is more than 30.5 m, pressurization is applied to the fire escapes. This height in houses is 51.50 m. While the pressurization system continues to operate actively, it is recommended that this difference between the stairwell and the use of the building be at least 50 Pa, even when the doors in the building are closed. This pressure difference is used to prevent smoke from leaking from the usage area to the elevator bucket or the stairs.
ERF Group prevents leakage by creating the required pressure difference with different product options. EC cell fans, roof mounted axial fans, AC cell fans, ladder and lift pressurization, axial cell fans are available for use.
Stairs in a high-rise building are generally used to represent the sole means of egress. ERF Group stair pressurization requires that exit stairs be smoke-free and in accordance with the design. Most building codes require the following to effectively ensure safety:
When a fire breaks out, smoke generated in buildings has a tendency to flow into elevator shafts, stairwells and other vertical shafts due to factors such as natural convection, thermal expansion and the chimney effect. The smoke spreading into the building prevents the intervention of firefighters and allows people to escape safely.
Environmental control pressurization systems are one of the most important factors in solving this problem. For many years, environmental control pressurization systems have become more common to use to protect stairwells of high-rise buildings from smoke.
It is important that ERF Group environmental control pressurization systems are designed to prevent smoke from reaching the stairs, elevator shafts and vertical shafts, while also restricting smoke in the area where the fire started and creating high pressure with mechanical ventilation to remove smoke from the fire area. In this way, pressurization systems designed by ERF Group allow the fire escape to be smoke-free so that people can safely escape, preventing smoke from spreading to the entire parking lot. At the same time, it helps firefighters reach the fire source to intervene in the fire.
ERF Group environmental control pressurization institutions are made in accordance with the regulations. In high-rise buildings, stairs generally represent the only exit route during a fire. It is extremely important that exit stairs are smoke-free and have design features that increase the exit speed of the living building occupants.
Many building codes require that fire escapes in high-rise buildings be pressurized to keep smoke out. ERF Group provides environmental control pressurization to serve multiple purposes. It prevents smoke from entering refuge areas, stairwells, elevator shafts or similar areas.
It creates a livable environment in refuge areas and exit routes during the time required for evacuation. It increases the visibility of the firefighting team in the building and makes fire rescue operations easier. Therefore, it is considered a system that is mandatory for human health in every building as a working principle.
The environmental control pressurization fan is a must in the stairwell of buildings. The main purpose of these systems is to prevent smoke from leaking in when a fire occurs. This system consists of an electric motor fan installation mounted in an isolated area. The outside air is captured through a shutter with a particulate filter.
Excess air formation is evacuated by automatic and manual dampers that are calculated appropriately and installed in appropriate places. In this case, the most important detail to be considered is carried out by ERF Group in a fully organized manner.
In environmental control pressurization systems, the pressure should not be too high. Exceeding the maximum level makes it difficult for manpower to open the door. Therefore, in ERF Group works, the pressure is carefully calculated and kept at the appropriate level during assembly and construction.
After entering during smoke, the door must be closed immediately. If the door is open, the air coming from inside the stairs has a tendency to escape outside, as the gaps will be wider. After a while, it becomes much easier to balance the air between the escape area and the area outside the fire. If this causes the air to contain smoke and fire, toxic gases will return to the inside of the stairs. At this point, ERF Group products have both a suitable and reliable design.
ERF Group is a company that has managed to leave its competitors behind with its long years of experience when it comes to ventilation systems. Functional ventilation systems meet expectations among the wide range of products. You can immediately contact our expert staff to experience the ERF Group quality.
