Fans and Motors

Of fluid machinery that compress gas, those with discharge pressures lower than 30 kPa are called fans, those with discharge pressures lower than 200 kPa are called blowers, and those with discharge pressures of 200 kPa and higher are called compressors. Fans include centrifugal, mixed-flow, axial-flow, and cross-flow types. Typical fans include turbo, radial, multiblade, mixed-flow, propeller, and cross-flow fans.