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Axial Fans
Axial-flow fans have blades that force air to move parallel to the
shaft about which the blades rotate. This type of fan is used in a
wide variety of applications, ranging from small cooling fans for
electronics to the giant fans used in wind tunnels. |
Centrifugal Fans
Often called a "squirrel cage" (because of its similarity in
appearance to exercise wheels for pet rodents) or "scroll fan", the
centrifugal fan has a moving component that consists of a central
shaft about which a set of blades, or ribs, is positioned. |
Cross Flow Fans
The cross-flow or tangential fan, sometimes known as a tubular fan
is used extensively in the HVAC industry. The fan is usually long in
relation to the diameter, so the flow approximately remains
two-dimensional away from the ends. |
