September 10, 2025WaterOpen Access

Operational Mechanisms and Energy Analysis of Variable-Speed Pumping Stations

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Variable-speed control expands flow range to 1.17–1.26 m3/s while keeping efficiency at 83–84%.
Energy losses at the outlet pipe junction increase from 3.8% to 18.2% as flow rises, impacting overall energy efficiency.
A dual-mode energy dissipation mechanism was identified, showing different turbulence behaviors at varying speeds.
This study provides a novel framework for quantifying junction energy losses in parallel pumping systems, enhancing energy optimization.

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Numerical simulations reveal variable-speed control improves efficiency and flow range in pumping stations, indicating new energy-saving strategies.

Li et al. (2025) studied this question.

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Numerical simulations reveal variable-speed control improves efficiency and flow range in pumping stations, indicating new energy-saving strategies.