Impulse Turbines

An Impulse Turbine is a turbine in which the energy of the water is converted into kinetic energy by passing it through a nozzle.

The water enters the casing of the turbine at atmospheric pressure.  The jet of water which emanates from the nozzle impinges on the buckets of the turbine.  The kinetic energy of the water is used to rotate the turbine.

An example of this type of turbine is the Penton Wheel