ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Power consumption for an agitated vessel equipped with pitched blade turbine and short baffles

Marta Major-Godlewska and Joanna Karcz

West Pomeranian University of Technology, Szczecin, Poland

E-mail: Joanna.Karcz@zut.edu.pl

Abstract: Power characteristics for an agitated vessel equipped with planar short baffles of length L and pitched blade turbine of pitch β are presented in the paper. The studies were carried out in the vessel of inner diameter D = 0.6 m, where the baffles were located in the distance p from the vessel bottom (p + L = H). Torque was measured using strain gauge method within the turbulent regime of the flow of Newtonian liquid in the agitated vessel. The effects of the pitch β and geometrical parameter p/H on the power number Ne were determined mathematically. The results showed that, for the assumed value of the angle β, the function Ne = f (L/H) decreases with the decrease in the baffle length L (i.e. with the increase in the parameter p). Moreover, for the assumed value of the baffle length L, the function Ne = f (β) increases with the increase in the angle β of the inclination of the impeller blade.

Keywords: Power consumption ; Agitated vessel ; Pitched blade turbine ; Short baffle 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-017-0346-x

Chemical Papers 72 (5) 1081–1088 (2018)