Pitched Blade Turbine Efficiency at Particle Suspension
Keywords:Pitched blade turbine, particle suspension, agitator efficiency
AbstractMixing suspensions is a very important hydraulic operation. The pitched six-blade turbine is a widely-used axial-flow impeller. This paper deals with effect relative impeller size and particle content on theefficiency of a pitched six-blade turbine at particle suspension. Two pitched six-blade turbines were used in model measurements of just suspension impeller speed. The ratios of the vessel to agitator diameter D/d were 3 and 4.5. The measurements were carried out in a dish-bottomed vessel 300 mm in diameter. The just suspension impeller speeds were measured using an electrochemical method, and were checked visually. A 2.5 % NaCl water solution was used as the liquid phase, and glass particles with four equivalent diameters between 0.18 and 0.89 mmand volumetric concentration from 2.5 % to 40% were usedasthesolid phase. The criterion values πs=Po√Fr'3(d/D)7 were calculated from the particle suspension and power consumption measurements. The dependencies of πs on particle content cv show that larger agitators are more efficient for higher particle content.
Download data is not yet available.
How to Cite
Ceres, D., Jirout, T., & Rieger, F. (2010). Pitched Blade Turbine Efficiency at Particle Suspension. Acta Polytechnica, 50(6). https://doi.org/10.14311/1281