A gas-fired gas turbine system is used by a shared cycle power plant with the help of thermal efficiency of 36% and thermal efficiency of the steam power system has 40%. Calculate the combined cycle efficiency.
If the composition of the gaseous fuel in this problem; in % by volume (mole), is as follows:
CH4: 60%, C2H6: 30%,N2: 10%
Calculate the air/fuel ratio for the above fuel in the case of total combustion.