Effect of Liquid Height on Power Consumption of Two-Blade Wide Paddle Impeller

An earlier study showed that the mixing performance of wide-paddle impellers (Maxblend, Fullzone and MR205) with H (liquid height)=1.3b (blade width) was better than that with H=b (Kato et al., 2015). Here, the effect of liquid height on the power consumption of several wide-paddle impellers developed by mixer companies in Japan was measured over a wide range of Reynolds number, from laminar to turbulent flow regions. The power consumption of some wide-paddle impellers examined could be correlated by using the authors' expressions (Kato et al., 2012) with the coefficients modified in this work over a wide range of liquid level.