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Deep-Well Turbine Pumps

Agricultural Water

  1. Blaine Hanson

Published Online: 15 JUL 2005

DOI: 10.1002/047147844X.aw1507

Water Encyclopedia

Water Encyclopedia

How to Cite

Hanson, B. 2005. Deep-Well Turbine Pumps. Water Encyclopedia. 3:664–667.

Author Information

  1. LAWR, Davis, California

Publication History

  1. Published Online: 15 JUL 2005

Abstract

Deep-well turbine pumps are used to pump groundwater. They consist of a housing or bowl, impellers, and a shaft, all of which are installed in the well. Impeller types include closed and semi-open impellers. Submersible pumps are a modification of deep-well turbines for which the electric motor is installed in the well, instead of at the ground surface. Performance curves, developed by pump manufacturers, describe relationships between total head and capacity, pump efficiency and capacity, and horsepower demand and capacity. These curves can select new pumps and evaluate existing pumps. A common cause of declining pump efficiency with time is wear caused by sand in the pumped water.

Keywords:

  • deep-well turbine;
  • pumps;
  • pump evaluation;
  • performance curves