How is the centrifugal blower turned?

A centrifugal blower is typically turned using an electric motor that drives the impeller. The motor is connected to the blower via a shaft, which transfers rotational energy to the impeller. As the impeller spins, it draws air into the inlet and expels it at a higher pressure through the outlet, creating airflow. The speed of the blower can be controlled by adjusting the motor's power or using variable frequency drives.