Axial Flow Fan Blade Design

There are a number of fan types.

Axial flow fan blade design. The fan is designed to produce a pressure difference and hence force to cause a flow through the fan factors which determine the performance of the fan include the number and shape of the blades. An axial fan is a type of fan that causes gas to flow through it in an axial direction parallel to the shaft about which the blades rotate. All of which have individual benefits volume pressure speed power efficiency etc but all of them will shift gases at the same rate based upon the input power. An axial fan is a type of a compressor that increases the pressure of the air flowing through it.

Differences such as efficiency or flow rate occur in the type of fan due to particular design advantages that favour one characteristic over another. Impeller axial centrifugala sirocco etc. Axial flow fans 1 0 definition of axial fans an axial flow fan moves air or gas parallel. Axial flow fan impellers will also be subject to centrifugal forces and thus the various elements will be stressed.

As in most cases the blades are cantilevered and only supported at the end adjacent to the hub fluctuating stresses are more important. The blades of the axial flow fans force air to move paralle. The design of an axial flow fan for application in large air cooled heat exchangers. Fan laws set of laws that predict perfor mance changes if one or more parameters are changed from one fan or operating condition to another.

Wtw bill cory in fans and ventilation 2005. The flow is axial at entry and exit.