A gas turbine has an overall pressure ratio of 5 and a maximum cycle temp 550°C. The turbine drives the compressor and an electric generator, the n efficiency of the drive being 97%. The ambient temperature is 20°C and air compressor at a rate of 15 kg/s; the isentropic efficiencies of the compressor as are 80 and 83%. Neglecting changes in kinetic energy, the mass flow rate o all pressure losses, calculate: (i) the power output; (ii) the cycle efficiency; he wvork ratio

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Subject: Thermodynamics
A gas turbine has an overall pressure ratio of 5 and a maximum 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 air enters the
compressor at a rate of 15 kg/s; the isentropic efficiencies of the compressor and turbind
are 80 and 83%. Neglecting changes in kinetic energy, the mass flow rate of fuel, and
all pressure losses, calculate:
(i) the power output;
(ii) the cycle efficiency;
(iii) the work ratio.
Transcribed Image Text:A gas turbine has an overall pressure ratio of 5 and a maximum 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 air enters the compressor at a rate of 15 kg/s; the isentropic efficiencies of the compressor and turbind are 80 and 83%. Neglecting changes in kinetic energy, the mass flow rate of fuel, and all pressure losses, calculate: (i) the power output; (ii) the cycle efficiency; (iii) the work ratio.
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