The requirements for setting the exhaust fan are as follows:
(1) should be located in the upper part of the highest smoke outlet of the smoke exhaust system, and should be located in the computer room separated by a partition wall with a fire resistance of not less than 2.5h The computer room door should adopt a fire door with a fire resistance of not less than 0.6h.
(2) In order to facilitate maintenance, the distance between the casing of the exhaust fan and the wall or equipment should not be less than 60㎝.
(3) The connection between the exhaust fan and the exhaust pipe should be reasonable. Practice has proved that the performance of the exhaust fan is often significantly reduced because of the incorrect connection between the exhaust fan and the exhaust duct.
(4) The smoke exhaust fan and the smoke exhaust port shall have interlocking devices. When any smoke outlet is opened, the smoke exhaust fan will start automatically. That is, once the alarm is given and it is confirmed that the cow is on fire, the fire control room will open the smoke exhaust port manually or remotely, the smoke exhaust fan will be put into operation immediately, and the ventilation and air conditioning system in the fire area will be closed immediately.
(5) The smoke exhaust fan should be built on the basis of concrete or steel frame, but no vibration damping device is needed. There should be no regulating device on the suction pipe of the fan.
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