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A liquid octane (C8H18) enters a combustion chamber of a gas turbine stationary at 1 atm...

A liquid octane (C8H18) enters a combustion chamber of a gas turbine stationary at 1 atm and 25 °C, and burns with 300% of excess air that enters the chamber in the same state.

Determine the heat of combustion if the products come out at 226.85 °C (kJ/kg)

Determine adiabatic flame temperature (°C)

Solutions

Expert Solution

Cp/R = A +BT +CT2 + DT-2    Where T is in K from 298 oK
Name Chemical formula A B*103 C*106 D*10+5
n-Octane C8H18 4.108 70.567 -22.208 0
Carbon dioxide CO2 5.457 1.045 0 -1.157
Nitrogen N2 3.28 0.593 0 0.04
Oxygen O2 3.639 0.506 0 -0.227
Water H2O 3.47 1.45 0 0.121

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