Axial and mixed flow design fan

The two most common types of fans are the axial flow and mixed flow designs. Figure 1 and 2 show an axial exhaust fan and an axial tube fan, respectively. These electric motor driven fans are avialable in both belt and direct drive with propeller diameters ranging from 12 to 60 in. Flow rate capacities vary from 1,000 to 77,000 cfm (cubic feet per minute), and static pressures go up to 1.5 in. of water.

Figure 1 Axial exhaust fan

Figure 2 Axial tube fan

Typical applications include spray booths, exhaust hoods, duct installation, removal of corrosive fumes and nonabrasive dust, and general factory ventilation. Figure 3 show a mixed flow design fan that combines the lightweight, inline features of the axial design with the added benefits of static pressure capability up to 8 in. of water and lower noise levels.

Figure 3 mixed flow fan