Reaction turbine

Under a positive pressure turbine or turbine is meant a reaction turbine in which the working fluid upstream of the impeller higher ( static ) pressure and a higher enthalpy than behind it. The usable work for the impeller so come mainly from the conversion of static pressure and enthalpy according to Bernoulli's energy equation. A reaction turbine having a reaction rate that is greater than zero. An example of a reaction turbine, the Kaplan turbine.

The counterpart of the reaction turbine is the impulse turbine, also called impulse turbine in which the working of the kinetic energy ( dynamic pressure) of the working medium is ( response rate = 0). A low pressure turbine ( reaction degree <0) is theoretically possible, but practically not useful and therefore not realized.

• Turbine