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Liquid - Liquid


The power put into a fluid mixing impeller produces pumping Q and a velocity head H. In fact all the power P which is proportional to QH appears as heat in the fluid and must be dissipated through the mechanism of viscous shear. The pumping capacity of the impeller has been measured for a wide variety of impellers. Correlations are available to predict the pumping capacity of the many impeller types in many types of configurations. The impeller pumping capacity is proportional to the impeller speed N and the cube of the impeller diameter D, Q is proportional to NxD^3. The power drawn by an impeller in low and medium viscosity fluids is proportional to the cube of impeller speed N and the impeller diameter D to the fifth power,
P is proportional to N^3 x D^5.