Find the required air -fuel ratio in a gas turbine whose turbine and compressor
enters the compressor efficiencies of compressor and turbine are 85% and 80%
respectively. Maximum cycle temperature is 875 . The working fluid can be
℃
taken as which enters the compressor at 1 bar and temperature 27 . The
℃
pressure of the air after compression is 4 bar. The fuel used has calorific value
of42000kJ/kg. There is a loss of 10% of calorific value in the combustion
chamber