An axial fan is a type of a that increases the of the air flowing through it. The blades of the fans force air to move to the shaft about which the blades rotate. In other words, the flow is axially in and axially out, linearly, hence their name. The design priorities in an axial fan revolve around the design of the that creates the difference and hence the suction that retains the flow across the fan. The main components that need to be studied in the designing of the propeller include the number of blades and the design of each blade. Their applications include propellers in then is the only of interest and other parameters like required and are considered of no interest. In case the propeller is used as a fan, the parameters of interest includes rise and.
An axial fan consists of much fewer blades i.e., two to six, as compared to. Axial fans operate at high i.e., high flow rate and low head and hence adding more blades will restrict the high flow rate required for its operation. Due to fewer blades, they are unable to impose their on the flow, making the geometry and the inlet and outlet meaningless. Also the blades are made very long with varying blade along the radius.
