A gas turbine has a pressure ratio of 6/1 and a maximum cycle temperature of 600°C. The isentropic efficiencies of the compressor and turbine are 0.82 and 0.85 respectively. Calculate the power output in kilowatts of an electric generator geared to the turbine when the air enters the compressor at 15°C at the rate of 15 kg/s. Take :c = 1.005 kJ/kg K and y = 1.4 for the compression process, and takec, = 1.11 kJ/kg K and y = 1.333 for the expansion process. (Ans. 920 kW]

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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21. A gas turbine has a pressure ratio of 6/1 and a maximum cycle temperature of 600°C. The isentropic
efficiencies of the compressor and turbine are 0.82 and 0.85 respectively. Calculate the power output in
kilowatts of an electric generator geared to the turbine when the air enters the compressor at 15°C at the
rate of 15 kg/s.
Take :c, = 1.005 kJ/kg K and y = 1.4 for the compression process, and takec, = 1.11 kJ/kg K and y = 1.333
for the éxpansion process.
(Ans. 920 kW)
riv
ea
Transcribed Image Text:21. A gas turbine has a pressure ratio of 6/1 and a maximum cycle temperature of 600°C. The isentropic efficiencies of the compressor and turbine are 0.82 and 0.85 respectively. Calculate the power output in kilowatts of an electric generator geared to the turbine when the air enters the compressor at 15°C at the rate of 15 kg/s. Take :c, = 1.005 kJ/kg K and y = 1.4 for the compression process, and takec, = 1.11 kJ/kg K and y = 1.333 for the éxpansion process. (Ans. 920 kW) riv ea
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