What is turbine?
A turbine is a mechanical rotating tool that uses and transforms energy from a fluid flow into helpful job. A turbine is a turbine with at least one shifting portion (rotor installation) connected to a shaft or drum. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor.
Working of turbine:
Working fluid includes potential energy (head of stress) and natural power (head of speed). The fluid can be either compressible or incompressible. Turbines use several physical concepts to obtain this energy.
Impulse turbine:
Impulse turbines alter a high-speed fluid or gas jet’s stream path. The subsequent impulse turns the turbine and with decreased kinetic energy exits the fluid flow.
The turbine blades do not change the pressure of the fluid or gas, as in the case of a steam or gas turbine; all the pressure drop is in the stationary blades.
The pressure head of the fluid is altered to the velocity head before it reaches the turbine by pushing the fluid with a nozzle. This method is used solely by Pelton engines and de Laval turbines. As the fluid jet is produced by the nozzle before achieving the blading on the rotor, impulse turbines do not involve a strained case around the rotor.
Reaction turbines:
Reaction turbines develop torque by reacting to the gas or fluid’s pressure or mass. The gas or fluid pressure shifts as it moves through the teeth of the turbine rotor.
To contain the working fluid, a pressure casement is required as it acts on the stage(s) of the turbine or the turbine must be fully immersed in the fluid flow.
