What is a Turbine ?
-A Turbine is a device which converts the heat energy of steam into the kinetic energy & then to rotational energy.
-The Motive Power in a steam turbine is obtained by the rate of change in momentum of a high velocity jet of steam impinging on a curved blade which is free to rotate.
-The basic cycle for the steam turbine power plant is the Rankine cycle. The modern Power plant uses the Rankine cycle modified to include super heating, regenerative feed water heating & reheating.
Working Principal of Steam Turbine
- A steam turbine works on the principle of conversion of High pressure & temperature steam into high Kinetic energy , thereby giving torque to a moving rotor.
- For above energy conversion there is requirement of converging /Converging-Diverging Sections
- Such above requirement is built up in the space between two consecutive blades of fixed and moving blades rows.