Centrifugal and axial fans are common in daily life. So, when they’re side by side, some may struggle to choose.

I. Centrifugal fans use a motor to boost gas pressure and discharge it. The high-speed rotor accelerates the gas, then decelerates it for pressure change. It enters a box compressor where the gas direction changes, slows down through the pipe section, and squeezes back into the rotor cycle for higher pressure. This process repeats to exchange air.

II. Axial fans have an inlet at the front of the rotor. As the rotor spins, the gas is pushed up by the blades, increasing its energy. Then, guide vanes direct the flow along a certain axis. The gas enters a diffuser, creating pressure energy before entering the working pipeline. This cycle completes the gas transfer.

III. By comparing these principles, we can see that centrifugal fans excel in short-term dust sedimentation, quick ventilation, and high unit power consumption. Axial fans, on the other hand, offer good heat dissipation, low unit power consumption, but less wind volume and cooling effect.

With this comparison, users should be able to make an informed choice between centrifugal and axial fans.