A gas turbine has continuous combustion with constant pressure receives air from atmosphere at 15 °Cand compresses it to five time the intake pressure in a compressor with efficiency of 80%. The compressed air then passes through a regenerator with effectiveness of 60%. From the regenerator, the air passes through the combustion chamber at constant pressure in which temperature is raised to 800 °C. From the combustion chamber the air expand through a turbine to atmospheric pressure. The isentropic efficiency of the turbine is 82%. The flow air through the gas turbine is at rate of 2.5 kg/s. Neglect the mass of fuel and take n =1.4 and cp=1.005 kJ/kg K. Evaluate;i.The net power output of the gas turbineii.The temperature of the air leaving the regenerator to combustion chamberiii.The thermal efficiency of the gas turbineiv.Discussone method of improving the thermal efficiency ofthis gas turbine.
A gas turbine has continuous combustion with constant pressure receives air from atmosphere at 15 °Cand compresses it to five time the intake pressure in a compressor with efficiency of 80%. The compressed air then passes through a regenerator with effectiveness of 60%. From the regenerator, the air passes through the combustion chamber at constant pressure in which temperature is raised to 800 °C. From the combustion chamber the air expand through a turbine to atmospheric pressure. The isentropic efficiency of the turbine is 82%. The flow air through the gas turbine is at rate of 2.5 kg/s. Neglect the mass of fuel and take n =1.4 and cp=1.005 kJ/kg K. Evaluate;i.The net power output of the gas turbineii.The temperature of the air leaving the regenerator to combustion chamberiii.The thermal efficiency of the gas turbineiv.Discussone method of improving the thermal efficiency ofthis gas turbine.
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