Than axial flow fan, centrifugal fan is the chief drawback of large volume, because of the structure is different, the same air volume, under the condition of the same air pressure, power consumption of centrifugal fan are much bigger than axial flow fan, but the noise will be relatively small, so the axial flow fan is multi-purpose in terms of fire ventilation, use at ordinary times the fan selection of centrifugal fan.  In the hotel class of high-grade buildings, many requirements priority use of centrifugal fans.