Assignment-4- Gas Turbine (For all problems cp and y may be taken as 1.005 kJ/kg K and 1-4 for all compression processes

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Assignment 4 Gas Turbine For All Problems Cp And Y May Be Taken As 1 005 Kj Kg K And 1 4 For All Compression Processes 1 (55.72 KiB) Viewed 43 times

Assignment-4- Gas Turbine (For all problems cp and y may be taken as 1.005 kJ/kg K and 1-4 for all compression processes, and as 1.15 kJ/kg K and 1-333 for all combustion and expansion processes.) 12.1 A gas turbine has an overall pressure ratio of 5/1 and a maxi- mum cycle temperature of 550°C. The turbine drives the compressor and an electric generator, the mechanical efficiency of the drive being 97%. The ambient temperature is 20°C and the isentropic efficiencies of the compressor and turbine are 0-8 and 0·83 respectively. Calcu- late the power output in kilowatts for an air flow of 15 kg/s. Calculate also the thermal efficiency and the work ratio. Neglect changes in kinetic energy, and the loss of pressure in the combustion chamber. (655 kW; 12%; 0.168)