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A gas turbine draws in air at 98kPa and 27°C. It is adiabatically compressed to 600kPa in a compressor with an isentropic efficiency of 85%. A heat exchanger is then fitted between the compressor and the combustion chamber and has an effectiveness of 80%. Heat is added in the combustion chamber until a temperature of 910°C is reached. The gas is then expanded down to 98kPa in a turbine with an isentropic efficiency of 87%. If the mass flow-rat- of the air is 7.5kg/s and the calorific value of the fuel 42MJ/kg. The compressor is rigidly connected to the turbine. Calculate: (a). net work (b). cycle thermal efficiency (c). net power (d). air-fuel ratio (e), specific fuel consumption in kg/kWh

A gas turbine draws in air at 98kPa and 27°C. It is adiabatically compressed to 600kPa in a compressor with an isentropic efficiency of 85%. A heat exchanger is then fitted between the compressor and the combustion chamber and has an effectiveness of 80%. Heat is added in the combustion chamber until a temperature of 910°C is reached. The gas is then expanded down to 98kPa in a turbine with an isentropic efficiency of 87%. If the mass flow-rat- of the air is 7.5kg/s and the calorific value of the fuel 42MJ/kg. The compressor is rigidly connected to the turbine. Calculate: (a). net work (b). cycle thermal efficiency (c). net power (d). air-fuel ratio (e), specific fuel consumption in kg/kWh

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A gas turbine draws in air at 98kPa....

A gas turbine draws in air at 98kPa and 27°C. It is adiabatically compressed to 600kPa in a compressor with an isentropic efficiency of 85%. A heat exchanger is then fitted between the compressor and the combustion chamber and has an effectiveness of 80%. Heat is added in the combustion chamber until a temperature of 910°C is reached. The gas is then expanded down to 98kPa in a turbine with an isentropic efficiency of 87%. If the mass flow-rate of the air is 7.5kg/s and the calorific value of the fuel 42MJ/kg. The compressor is rigidly connected to the turbine. Calculate: (a). net work (b). cycle thermal efficiency (c). net power (d). air-fuel ratio (e). specific fuel consumption in kg/kWh
Transcribed Image Text:A gas turbine draws in air at 98kPa and 27°C. It is adiabatically compressed to 600kPa in a compressor with an isentropic efficiency of 85%. A heat exchanger is then fitted between the compressor and the combustion chamber and has an effectiveness of 80%. Heat is added in the combustion chamber until a temperature of 910°C is reached. The gas is then expanded down to 98kPa in a turbine with an isentropic efficiency of 87%. If the mass flow-rate of the air is 7.5kg/s and the calorific value of the fuel 42MJ/kg. The compressor is rigidly connected to the turbine. Calculate: (a). net work (b). cycle thermal efficiency (c). net power (d). air-fuel ratio (e). specific fuel consumption in kg/kWh
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