Turbines are defines as the rotating mechanical devices that convert the energy of a water or a fluid into some useful work by conversion of this energy into mechanical power or energy .Sometimes this energy is also used for the generation of electricity .There are different types of hydraulic turbines used in the fluid machinery on the basis of net head used ,specific speed and on the basis of whether it is impulse or a reaction turbine .First of all ,let us understand what is impulse and reaction turbine .
The impulse turbine is defined as the type of turbine which requires only the virtue of its kinetic energy to rotate its fluid .The most perfect example of the impulse turbine is the Pelt-on wheel turbine which is a tangential flow impulse turbine .The impulse turbines are used in the cases where the high head of water and low discharge is required for the power conversion is required .
The reaction turbine is defined as the type of turbine which requires the virtue of both the pressure energy and the pressure energy to rotate its fluid .The most perfect examples of reaction turbine are Francis Turbine ,Kaplan turbine and propeller shaft turbine .These types of turbines are used for comparatively low heads and high discharge requirement .
TYPES OF TURBINE IN FLUID MACHINERY WITH SPECIFICATIONS
The different type of fluid machinery turbines with certain specifications can be summarised in the following table -
NAME OF TURBINE
TYPE OF TURBINE (IMPULSE /REACTION)
TYPE OF FLOW INVOLVED
NAME OF THE INVENTOR
SPECIFIC SPEED RANGE VALUE
LOW ( upto 10-20 m )
Hence ,the different types of turbine used in the fluid machinery section are discussed above with their specifications .There are many other turbines also such as gas turbines ,steam turbines ,wind turbine which are not discussed here .