ABSTRACT
In a steam turbine, high-pressure steam from the boiler expands in a set of stationary blades or vanes (or nozzles). The high-velocity steam from the nozzles strikes the set of moving blades (or buckets). Here the kinetic energy of the steam is utilized to produce work on the turbine rotor. Low-pressure steam then exhausts to the condenser. There are two classical types of turbine stage designs: the impulse stage and the reaction stage.
