QI// A steam turbine equipped with single stage reheating and regenerative feed heating operates under the following conditions. Reheater Initial steam HP IP LP Osier pressure 100 bar, initial steam temperature 530 °C, pressure at which steam is heated - 20 bar, reheat temperature at intermediate pressure turbine = 510 °C, feed temperature at outlet from final feed heater = 215 °C, exhaust pressure = 0.055 bar, steam bled off before reheater = 4% of steam entering turbine, total steam bled off 21% of stean entering turbine, internal efficiency of high pressure turbine 0.83, internal efficiency of intermediate and low pressure turbines = 0.88, efficiency of alternator = 0.98. Neglecting heat losses and pressure losses due to reheating, calculate: the heat rate in kJ/kWh, and the total volume of steam passing through the exhaust in m'/s if the electrical output is 10000kW. inlet to 11g OFP

Elements Of Electromagnetics
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* Q1// A steam turbine equipped
with single stage reheating and
regenerative feed heating
operates under the following
conditions.
Reheater
Initial
steam
HP
IP
LP
Osler
pressure =100 bar, initial
steam temperature = 530 °C,
pressure at which steam is
heated = 20 bar, reheat
temperature
intermediate pressure turbine =
510 °C, feed temperature at
outlet from final feed heater=
215 °C, exhaust pressure 0.055 bar, steam bled off before reheater = 4% of steam
entering turbine, total steam bled off = 21% of steain entering turbine, internal
efficiency of high pressure turbine 0.83, internal efficiency of intermediate and low
pressure turbines 0.88, efficiency of alternator 0.98. Neglecting heat losses and
pressure losses due to reheating, calculate: the heat rate in kJ/kWh, and the total
volume of steam passing through the exhaust in m'/s if the electrical output is
100000kW.
at inlet to
1kg
OFP
Transcribed Image Text:* Q1// A steam turbine equipped with single stage reheating and regenerative feed heating operates under the following conditions. Reheater Initial steam HP IP LP Osler pressure =100 bar, initial steam temperature = 530 °C, pressure at which steam is heated = 20 bar, reheat temperature intermediate pressure turbine = 510 °C, feed temperature at outlet from final feed heater= 215 °C, exhaust pressure 0.055 bar, steam bled off before reheater = 4% of steam entering turbine, total steam bled off = 21% of steain entering turbine, internal efficiency of high pressure turbine 0.83, internal efficiency of intermediate and low pressure turbines 0.88, efficiency of alternator 0.98. Neglecting heat losses and pressure losses due to reheating, calculate: the heat rate in kJ/kWh, and the total volume of steam passing through the exhaust in m'/s if the electrical output is 100000kW. at inlet to 1kg OFP
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