Liquid, gaseous medium forced convection and mixing device uniformly. Agitator type, size and speed of the stirring power distribution between the overall flow and turbulence has an impact. In general, the power distribution turbo agitator beneficial for turbulence, and propeller stirrer favorable overall liquidity. For the same type of stirrer, the power consumption under the same conditions, large diameter, low speed stirrer, the main power consumed in the overall flow, is conducive to macroscopic mixing. Small diameter, high speed mixers, power consumption in major turbulence beneficial micro-mixing. Stirrer amplification process is a complex problem with the related, still only through experience progressively enlarged, enlarged criterion obtained, extrapolated to an industrial scale.