Wan kun fan science popularization - The disadvantages of excessive airflow in centrifugal fans

Is there any drawback to using a high-volume centrifugal fan?

The first drawback is that the fan operates in an inefficient zone, resulting in the fan consuming more energy for the same airflow and pressure, such as consuming more electricity.

Secondly, even if the designed airflow is high, if the air pressure doesn't increase accordingly, the air won't be able to be blown out, because the resistance coefficient of centrifugal fans is directly proportional to the square of the flow rate.

Thirdly, the noise of the fan will increase because there are two indicators that determine the noise of the fan: wind pressure and airflow.

Fourth, it may cause the fan to be at risk of surge, as the actual resistance will increase when the airflow is very high, making the fan prone to surge.

Lastly, the cost of the fan will increase due to its larger size, which will result in a higher price.