"Axial Fan" is the original motivation of the mechanical energy is converted to pressure energy is conveyed fluid and kinetic energy of a power plant and its main role is to improve the delivery of gas and gas energy. Fan works with "Axial Fan" turbine compressor is basically the same, but due to the low gas flow rate, pressure changes small, usually no need to consider changes in the specific volume of gas, that gas as an incompressible fluid handling. "Axial Fan" fluid from the centrifugal force, so that the centrifugal force due to the increased static pressure could be zero, so it can produce much lower than the first centrifugal fan. It is generally suitable for large flow of low lift place a high specific speed range.