Liquid octane (C3H18) enters a steady-flow combustion chamber at 25°C and 8 atm at a rate of 0.8 kg/min. It is burned with 200 percent excess air that is compressed

and preheated to500 K and 8 atm before entering the combustion chamber. After combustion, the products enter an adiabatic turbine at 1300 K and 8 atm and leave at 950 K and 2 atm. Assuming complete combustion and To = 25°C, determine: the heat transfer rate from the combustion chamber, the power output of the turbine, and the reversible power output of the turbine for the same output pressure.