Improving the Performance of an Innovative Centrifugal Pump through the Independent Rotation of an Inducer and Centrifugal Impeller Speeds

Ehsan Dehnavi, Moises Solis, Amelie Danlos, Mohamed Kebdani and Farid Bakir ()
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Ehsan Dehnavi: Arts et Métiers Institute of Technology LIFSE, Le Cnam, HESAM University, 75013 Paris, France
Moises Solis: Arts et Métiers Institute of Technology LIFSE, Le Cnam, HESAM University, 75013 Paris, France
Amelie Danlos: Arts et Métiers Institute of Technology LIFSE, Le Cnam, HESAM University, 75013 Paris, France
Mohamed Kebdani: Arts et Métiers Institute of Technology LIFSE, Le Cnam, HESAM University, 75013 Paris, France
Farid Bakir: Arts et Métiers Institute of Technology LIFSE, Le Cnam, HESAM University, 75013 Paris, France

Energies, 2023, vol. 16, issue 17, 1-15

Abstract: This article introduces an innovative design for a centrifugal pump featuring an inducer that enables the independent rotation of both the inducer and the centrifugal impeller. Unlike conventional designs, this configuration allows for differential speeds and customizable rotation directions, including co-rotation and counter-rotation modes. These new capabilities offer numerous operational advantages. This study investigates the impact of the speed ratio between the inducer and the impeller on the pump’s performance in both the co-rotation and counter-rotation modes. The results demonstrate that the independent rotation of the inducer expands the pump’s operating range, while counter-rotation significantly enhances the generation of pressure and the pump’s efficiency compared to co-rotation. These findings pave the way for the development of pumps that offer benefits such as a reduced size, reduced vibration, minimized energy consumption, and improved cavitation performance.

Keywords: inducer; centrifugal pump; co-rotation; counter-rotation; pump performance; minimized energy consumption (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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