Reaction Turbine | Vibepedia

Reaction turbines are a cornerstone of modern hydropower, converting both the pressure and kinetic energy of a fluid into rotational mechanical work. Unlike impulse turbines, which rely solely on jet velocity, reaction turbines are fully submerged and operate under pressure. The fluid's expansion within the turbine blades causes a change in momentum, generating torque. This principle makes them exceptionally efficient for a wide range of head conditions, from low to high. Key examples include the Francis turbine, a versatile workhorse, and the Kaplan turbine, ideal for very low heads. Their widespread adoption in hydroelectric dams globally underscores their significance in renewable energy production.