The harm of improper selection of exhaust fans

　　The harm of improper selection of exhaust fans

　　In order to prevent the exhaust fan from jeopardizing the actual effect of ventilation, the machinery and equipment should not be too close to the side wall of the tunnel. The fire-fighting high-temperature fire-fighting smoke exhaust fan is abundant according to the inclined shaft and the tunnel at the designated assistance station as the ventilation management system sent to the fresh air system and the smoke exhaust system Cross passages and tunnels where no accidents have been detected, scattered people should enter the cross passages and reliable tunnels with the fresh air system to ensure the fresh air needed in the waiting area.

　　According to regulations, the charging and exhausting volume of equipment in the anti-smoke stairway and the pre-treatment room, the shared front room and the front room of the fire elevator shall be corrected by the measurement verification. When the measurement verification value and the specified value are not available, it shall Reset according to the 2 median values. Some plan plans first reset according to the specified value.The exhaust volume and working pressure of the selected fire-fighting high-temperature fire-fighting exhaust fans are often too small to meet the requirements; some plan planning uses the available management system for ventilation and equipment exhaust systems, but the construction site did not select the dual High-speed fire-fighting and high-temperature fire-fighting smoke exhaust fans; some companies did not adjust the goods according to the specifications of the fire-fighting high-temperature fire-fighting smoke exhaust fans planned by the plan, and purchased fire-fighting high-temperature fire-fighting smoke exhaust fans with a small output power size, resulting in the exhaust air volume of the fire-fighting high-temperature fire smoke exhaust fans Not enough.

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