After the installation of the centrifugal fan, the phenomenon of excessive or insufficient flow occurs during the formal operation, the main reasons are as follows:
1 The difference between the actual value of system resistance and the calculated value is too large.
2 The influence of the total pressure deviation of the fan is not considered in the selection.
Possible measures include the following:
1 Using throttling devices to regulate flow
2 Adjust flow rate by changing the speed of centrifugal fan
3 Switching the flow rate of fans with higher or lower pressure
4 Adjust flow rate by changing system drag coefficient