Answer to Question #269757 in Mechanical Engineering for ron

Question

What makes axial flow fans more suitable for applications where large flow rates of air are to be handled. What new developments have taken place in the design of fans for air conditioning applications?

Answer 1

Axial flow fans, as the name implies, suck air in and blast it forward, moving along the fan's axis. The wind created would have no centrifugal impact. Airflow is smoothed and straightened by guides or stator vanes, which enhance efficiency. In general, an axial-flow fan can handle a higher flow rate while maintaining a modest pressure gain. 

  Fresh air is supplied, the air is sucked from return air trenches, the air is sucked from rotating filters, the air is expelled, and so on. The effective movement of the air in a conventional axial fan is straight through the impeller at a constant distance from the axis. As a result, axial fans are better suited to high-flow applications.

 The backward curved fan is one of the most efficient centrifugal fan alternatives design. It can transport large quantities of air at high static pressures, making it an excellent choice for a variety of industrial applications.