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The Importance of Impeller Design and Best Efficiency Point

Electrical Construction & Maintenance
Publication date: 
May 2016
Gene Vogel, EASA Pump & Vibration Specialist

If you work with electric motors and pumps, you’ll eventually encounter a pump curve and one of its key parameters — best efficiency point (BEP). The BEP is the point on the curve where the pump operates most efficiently. Unique to each pump, the BEP is a product of both impeller design and several related pump curve parameters.

This article covers:

  • Pump efficiency
  • Effect of flow rate
  • Effect of impeller design on BEP