Question 12.23: The following data relate to a regenerative steam power plan...
The following data relate to a regenerative steam power plant generating 22500 kW energy, the alternator directly coupled to steam turbine :
Condition of steam supplied to the steam turbine … 60 bar, 450°C
Condenser vacuum … 707.5 mm
Pressure at which steam is bled from the steam turbine … 3 bar
Turbine efficiency of each portion of expansion … 87 per cent
Boiler efficiency … 86 per cent
Alternator efficiency … 94 per cent
Mechanical efficiency from turbine to generator … 97 per cent
Neglecting the pump work in calculating the input to the boiler, determine :
(i) The steam bled per kg of steam supplied to the turbine.
(ii) The steam generated per hour if the 9 percent of the generator output is used to run the pumps.
(iii) The overall efficiency of the plant.
Our explanations are based on the best information we have, but they may not always be right or fit every situation.
Learn more on how we answer questions.