Analysis of the requirements and acceptance criteria of smoke exhaust fan in building - Zhejiang Xingwang Explosion-Proof Fan Co., Ltd.

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Analysis of the requirements and acceptance criteria of smoke exhaust fan in building

Smoke control system is composed of air supply and exhaust pipes, pipe, valve, fire door switch equipment, fan and other equipment. The smoke prevention system is set up in the form of positive pressure. There is a direct relation between the smoke emission of the mechanical smoke exhaust system and the smoke prevention partition. Smoke prevention facilities in high-rise buildings should be divided into the mechanical pressurization air supply and the natural smoke exhaust facilities which can open the window. Smoke exhaust facilities in high-rise buildings should be divided into mechanical smoke exhaust facilities and natural smoke exhaust facilities which can open the window.
The smoke control system can be divided into the general name of smoke prevention system and smoke control system. Smoke control system adopts the mechanical pressurized air or natural ventilation, to prevent the entry of smoke evacuation system; the mechanical smoke exhaust or natural ventilation exhaust system, flue gas is discharged to the outside of the building system.
Mechanical smoke exhaust system, is sent by the row wind pipe, tube well, fire damper, door switch equipment, supply and exhaust fan etc. equipment. The smoke prevention system is set up in the form of positive pressure. There is a direct relation between the smoke emission of the mechanical smoke exhaust system and the smoke prevention partition.
Anti smoke stair or common antechamber, using open balcony, concave corridor or indoor different toward the natural ventilation window can be opened when, the staircase can not smoke exhaust design facilities. Use the balcony of the building, concave gallery or on the external wall to facilitate the opening of the external window or smoke to carry out the organization of natural smoke exhaust.
Natural ventilation should be arranged in the room above, should be set up in the distance under the ceiling or roof within 800mm, the spacing to the lower edge of the exhaust port of the meter. Natural ventilation should be arranged below the room, in the room height below 1/2. The distance between the upper edge of the air inlet and the upper edge of the air inlet. Inside the aisle and the room of the natural smoke exhaust port, to the smoke partition the most distant point should be less than 30m. Natural smoke exhaust window, exhaust port, air supply outlet should be set to open convenient and flexible device.

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