Before revision: Causes of unstable flow Stalling and surging affects the fan performance, blades, as well as output and are thus undesirable.
After revision: The optimal design of the Axial fan's impellers provides higher efficiency.Reduction in Weight Extends the Life of The Mechanical Drive System.Improved Mechanical Strength Provides A Longer Life For Axial Flow FanThese fans usually have ball or sleeve bearings and operate quietly without any noise.Low Power ConsumptionLightweight, And User-friendlyCauses of unstable flow Stalling and surging affects the fan performance, blades, as well as output and are thus undesirable.