Regenerative turbines cannot pump liquids that contain what?

Regenerative turbines are designed to provide efficient flow and pressure rise for clean liquids. They operate based on the principle of adding kinetic energy to the liquid via rotating components. When it comes to handling liquids, the presence of grit or solid particles can be particularly problematic.

The impellers in regenerative turbines have closely spaced components that rely on smooth, unimpeded flow for optimal performance. The introduction of solid particles can lead to abrasion and erosion of these components, which diminishes efficiency and can lead to premature wear or failure of the pump. In addition, grit can disrupt the hydraulic balance when moving through the pump, potentially causing vibrations or cavitation, which can harm the system further.

While liquids that contain air bubbles, heat, or foam may present challenges to pump performance, regenerative turbines are more specifically compromised by solid contaminants. These can significantly affect the operational integrity and lifespan of regenerative turbine pumps, making them unsuitable for pumping liquids containing grit or solid particles.