Staircase Pressurization System

The Staircase Pressurization Systems in Sri Lanka offered by Airflow Syetems will automatically operate in case of a fire in a high rise building. When the Fire alarm system will activate upon detecting the temperature and smoke. When signal goes to the pressurization fan the same will energize to pressure the staircase allowing the occupants to escape through the staircase and firefighters to battle the fire. Meanwhile some extraction fans installed in each area also will be operating to remove the smoke from occupied area. As the emergency exit doors typically open into stairways, the increased air pressure in the core arising from a pressurization system can prevent occupants from being able to open doors. To overcome this difficulty, it is compulsory to maintain Static Pressure as 50 Pa inside the staircase, higher than the occupied area while the Pressurization System is designed. If pressure different is more than 50 Pa, the occupants will not be able to exist through the doors which open to staircase due to higher pressure difference.