First, reduce air duct resistance
       It is not advisable to install too many baffles in the flue duct to change the situation of the elbows, to block the air leakage and to clear the slag and dust accumulation in time. The number of boiler fans operating in parallel should be selected reasonably to ensure that the fans operate at full load.
       Second, when there are many boilers
       Connecting pipes should be added between the flue or air duct to make the air pressure of different furnaces communicate with each other and stop the operation of redundant fans. Improve the fan inlet and outlet devices to clean up the vortex at the fan suction inlet. Use natural ventilation as much as possible.
       Third, select the appropriate regulating device for the boiler fan
       The throttling adjustment is not economical enough, so it is changed to the rotary adjustment door adjustment or the speed adjustment, and the axial flow boiler fan uses the movable blade adjustable device. To reduce the excessive wind pressure of the fan, the outer edge of the impeller can be turned if necessary to reduce the diameter of the impeller.