Consider a combustion chamber operating at steady state where the fuel is ethane (C2H6). The fuel enters at 25C,1 atm and burns completely with 160% theoretical (dry) air entering at the same temperature and pressure. The furnace delivers energy by heat transfer at an average temperature of 627C to produce steam for a steam turbine. Combustion products at 627C, 1 atm are provided to the surroundings. There are no effects of motion and gravity. Determine, in kJ per kmol of fuel, (a) the exergy entering the furnace with the fuel. (b) the exergy exiting with the products. (c) the rate of exergy destruction. (d) an exergetic efficiency for the furnace. Model the environment as a mixture with a molar composition of 1%CO2,9%H2O vapor, 18%O2 and 72%N2 at 25C and 1 atm