Question

A gaseous fuel containing methane and ethane is burned with excess air. The fuel enters
the furnace at 25oC and 1 atm, and the air enters at 200oC and 1 atm. The stack gas
leaves the furnace at 800oC and 1 atm and contains 5.32 mol% CO2, 1.60% CO, 7.32%
O2, 12.24% H2O and the balance is N2.

a) Calculate the molar percentages of methane and ethane in the fuel gas and the
percentage excess air fed to the reactor.

b) Calculate the heat (kJ) transferred from the reactor per mole of fuel gas fed.