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Home > What's New > Centrifugal fan operation
  • Centrifugal fan operation2010-09-16
  • A centrifugal fan is a mechanical device that is used to move air or gas. A fan wheel mounted on a hub inside a casing facilitates this movement. The fan wheel is rotated by an external force, either an electric motor or an internal combustion engine. The fan consists of blades or ribs arranged around a hollow hub. The air or gas to be moved enters the housing through the side of the fan wheel into the hollow hub and then turns ninety degrees to flow over the fan blades. The rotating fan then causes the air to accelerate by imparting centrifugal force to it, hence the name. The accelerated air or gas then exits the housing.

    These fans are capable of moving the air with increased pressure, making them well suited for use in pollution control systems, central cooling or heating systems, and as leaf blowers in inflating structures. In addition, by mounting the fan on a heat sink, coupled with metal fins, high cooling capacity in a small scale can be achieved. There are various types of centrifugal fans and they are classified based on the orientation of the axial fan blades as well as the drive mechanism of the blade.

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