Ethane gas (C2H6) at 25°C is burned in a steady-flow combustion chamber at a rate of 5 kg/h with the stoichiometric amount of air, which is preheated to 500 K before entering the combustion chamber. An analysis of the combustion gases reveals that all the hydrogen in the fuel burns to H2O but only 95 percent of the carbon burns to CO2, the remaining 5 percent forming CO. If the products leave the combustion chamber at 800 K, determine the rate of heat transfer from the combustion chamber.

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Qout H20 CO2 C2Ho 25°C CombustionCO chamber 800 K 02 N2 AIR 500 K