Question

Methane is mixed with air at 20% excess over the stoichiometric requirement and undergoes combustion in a burner operating at 1 bar.

The inlet gases are at 4 ^oC and the effluent steam is at 1000^oC. Determine the amount of heat assuming complete oxidation of methane to carbon dioxide and water. Assume air to be 21% oxygen and 79% nitrogen. For simplicity, assume the heat capacities of the species to be constant and equal to the values given below (in J/(mol K)):

C_{p, CH4} = 55.42

C_{p, O2} = 32.53

C_{p, N2} = 30.37

C_{p, CO2} = 48.65

C_{p, H2O} = 36.94

Answer 1