High temperature resistant exhaust pipe and smoke exhaust pipe installation in basement

by:Haikuo     2021-06-17
Due to the high degree of airtightness of the ventilation of the underground garage, high-temperature smoke will quickly spread underground because there is nowhere to discharge in the event of a fire. Therefore, a fire smoke exhaust pipe system must be installed.
  1. High temperature resistant exhaust pipe and smoke exhaust pipe are used together, and the exhaust and smoke pipe vents are used together. The advantage of this system is that the exhaust air is even, the exhaust pipe points are in place, and it is convenient to exhaust the smoke pipe in time. The disadvantage is that the conversion between the exhaust air and the exhaust pipe is completed by the tuyere, so the automatic tuyere is large and the control mechanism is complicated, so the cost is higher. The system has poor reliability due to many control links.
  2, the exhaust pipe and the smoke exhaust pipe are used together, and the exhaust air outlet and the smoke exhaust pipe air outlet are set separately. In this system, each smoke prevention area is provided with a smoke exhaust pipe air outlet, and only necessary parts are provided with an electric exhaust air outlet. In the event of a fire, close all exhaust vents, and open the exhaust pipe according to the instruction of the fire control room. The advantage of this system is that the control is simpler and more reliable than that of Mode 1, but it is generally possible to reduce the electric exhaust vent as much as possible to save the cost, which may cause poor exhaust effect and form a dead corner of ventilation.
  3. The exhaust pipe and the smoke exhaust pipe are combined with the main pipe, and the branch pipes are separated by kinetic energy. The main pipe of this kind of system has no air outlets or only exhaust pipes that are closed at one time. The branch pipes are divided into air outlets with electric smoke and fire control valves, and the branch pipes are divided into electric smoke control valves. Exhaust branch pipe and smoke exhaust pipe branch pipe, daily exhaust
  The exhaust pipe of wind and fire is realized by switching related valves. This type of system has a much smaller number of electric dampers than modes 1 and 2, but due to the double branch pipes, the air pipes are expensive and take up more space.
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