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TESTAdiabatic flame temperature

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TEST Adiabatic flame temperature

1. Estimate the constant-pressure adiabatic flame temperature for the combustion of a stoichiometric C3H8–air mixture. The pressure is 1 bar and the initial reactant temperature is 298 K. Use the following assumptions:

 “Complete combustion”, i.e., the product mixture consists only of CO2, H2O, and N2.

 The enthalpy of the product mixture is estimated using constant specific heats evaluated at 1200 K  (Ti + Tad)/2, where Tad is guessed to be about 2100 K.

2. Under the same assumptions, but obviously considering excess O2 in the products, estimate the adiabatic flame temperature for a C3H8–air mixture with equivalence ratio = 0.9.

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