A gas turbine uses air as the working fluid and produces power at a rate of 855 kW. Air enters the turbine at a temperature of 624 K and pressure of 771 kPa and exits at a temperature of 400 K and pressure of 100 kPa. During the expansion process of air in the turbine, heat is transferred from the turbine to its surroundings at a rate of 46 kW. Assuming constant specific heats, calculate the rate of exergy destruction during the process, in kW. Surroundings condition: Po=100 kPa and To=300 K Properties of air: C=0.726 kJ/(kgK), C,=1.013 kJ/(kgK), R=0.287 kJ/(kgK), k=1.395

Elements Of Electromagnetics
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A gas turbine uses air as the working fluid and produces power at a rate of 855 kW. Air
enters the turbine at a temperature of 624 K and pressure of 771 kPa and exits at a
temperature of 400 K and pressure of 100 kPa. During the expansion process of air in the
turbine, heat is transferred from the turbine to its surroundings at a rate of 46 kW.
Assuming constant specific heats, calculate the rate of exergy destruction during the
process, in kW.
Surroundings condition: Po=100 kPa and To=300 K
Properties of air: C,=0.726 kJ/(kgK), C,=1.013 kJ/(kgK), R=0.287 kJ/(kgK), k=1.395
Transcribed Image Text:A gas turbine uses air as the working fluid and produces power at a rate of 855 kW. Air enters the turbine at a temperature of 624 K and pressure of 771 kPa and exits at a temperature of 400 K and pressure of 100 kPa. During the expansion process of air in the turbine, heat is transferred from the turbine to its surroundings at a rate of 46 kW. Assuming constant specific heats, calculate the rate of exergy destruction during the process, in kW. Surroundings condition: Po=100 kPa and To=300 K Properties of air: C,=0.726 kJ/(kgK), C,=1.013 kJ/(kgK), R=0.287 kJ/(kgK), k=1.395
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