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Q4 Methane gas (CH) burns with 40%excess air, and products leave at 700 K.Assuming the fuel and air enter the combustion chamber at 250 C and atmospheric pressure, determine (a) Air fuel ratio (b) the dew point of the products and (c) the heat transfer from the combustion process for 1 kmole of CH4 Substance hr, 700 K kJ/kmol he, 298 K kJ/kmol kJ/kmol CH4 02 N2 CO2 H2O -74,850 8.682 8,669 -393,520 9,364 -241,820 9,904 21,184 20,604 27,125 24,088 0
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