The smoke and heat exhaust system provides the removal of combustion and smoke combustion products in the initial phase of the fire and then removes the heat released. This improves the evacuation of people and the intervention of fire brigades, reduces the thermal stress of the building structure, and ultimately reduces subsequent damage to the equipment or building caused by hot gases and smoke.
Both natural and forced smoke and heat exhausts heat hot gases outside the building either through roof flaps, ventilators or piping systems. These piping systems are distinguished in standards as smoke and heat pipes from one or more sections of fire, or smoke and heat pipes from multiple fire departments with individual smoke sections.