Description

The main components of a centrifugal fan include:

1. Fan Housing or Casing: This is the outer enclosure that contains the fan wheel and directs the airflow in the desired direction.

2. Fan Wheel or Impeller: It is the rotating component of the fan responsible for imparting kinetic energy to the air. The impeller typically consists of curved blades that push the air radially outward.

3. Inlet: The point where air enters the fan. The inlet is usually designed to provide smooth entry of air into the impeller, minimizing flow losses.

4. Outlet: The point where the air exits the fan after being accelerated and pressurized by the impeller.

When the fan is in operation, the rotating impeller accelerates the air, increasing its velocity and pressure as it moves towards the outer edge of the fan wheel. This pressurized air is then discharged into the fan housing and directed towards the outlet. The flow from a centrifugal fan is generally more efficient for higher-pressure applications compared to axial fans, making them suitable for ventilation, HVAC systems, air conditioning, industrial processes, and more.

It's important to note that the performance of a centrifugal fan depends on various factors such as the design of the impeller, the speed of rotation, the size and shape of the blades, and the system resistance. These factors play a crucial role in determining the fan's airflow rate, pressure, and efficiency.