Steam Boilers, Engines, Nozzles and Turbines
In an ideal impulse turbine, the

Whirl velocity at inlet is equal to that at the outlet
Relative velocity at the inlet of the moving blade is equal to that at the outlet
Absolute velocity at the inlet of moving blade is equal to that at the outlet
Axial velocity at inlet is equal to that at the outlet

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Steam Boilers, Engines, Nozzles and Turbines
Equivalent evaporation of water is the evaporation for a feed water supply at 100°C

And its corresponding conversion into dry steam at desired boiler pressure
Conversion into steam at the same pressure at which feed water is supplied
Conversion into steam at atmospheric condition
And its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm²

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