Combustion Reactions and Thermochemistry
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Liquid Octane at 25C, 1 bar is burned with air at 500K in a steady flow combustor. The products of combustion are cooled to 1400K, 1 bar and have the following volumetric analysis on a dry basis: 10.7% CO_@; 3.6% CO; 5.3% O_2 and 80.4% N_2. Determine the percentage excess air supplied, the dewpoint of the products and the heat transfer per kilomole of fuel during the combustion process.
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a) Finding air excess percentage
We will use following notations:
rx = the molar (volumetric) percentage of component "x" in a mixture
Mx = molar mass (kg/kmol)
hx = specific enthalpy of component "x" (kJ/kg)
Hx = molar specific enthalpy (kJ/kmol)
Rx = gas constant ...
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