id fan impeller vane direction &rotation direction

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id fan impeller vane direction &rotation direction ..

Answer / lakshmi niwas pathak

These fans increase the speed of air stream with the
rotating impellers. They use the ... Centrifugal fans
accelerate air radially, changing the direction (typically
by 90o) of the airflow. ... 1.2 Bearings; 1.3 Fan dampers
and Vanes; 1.4 Fan ribs.

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