How to design a centrifugal pump with constant power consumption for all flow rates

Marcus Beck (1) , Paul Uwe Thamsen (2)

1 TU Dresden - Technische Universität Dresden = Dresden University of Technology
2 TU - Technical University of Berlin / Technische Universität Berlin

This paper demonstrates a new hydraulic design of a centrifugal pump for drum pump application with constant power consumption for all flow rates. The advantage of constant power is a smaller electrical motor size and also constant speed for all operation points. Thus the cooling effect remains effective and the noise emission is low. This approach is quite new, because usually the hydraulic design focuses on best efficiency. Different design parameters are systematically investigated, which results in approximately eleven different semi-axial type impellers combined with a new diffuser. All impellers are tested in a special test stand which allows a detailed loss analysis to determine the pump efficiency. The results are displayed and discussed, which help to extract some guidance for design of such pumps.

Domaines: Sciences de l'ingénieur [physics]

Marcus Beck, Paul Uwe Thamsen. How to design a centrifugal pump with constant power consumption for all flow rates. 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC 2016), Apr 2016, Honululu, United States. ⟨hal-01549128⟩