Adiabatic Flame Temperature in Steady Combustion EXAMPLE 15-8 Liquid octane (C,H1g) enters the combustion chamber of a gas turbine steadily at 1 atm and 25°C, and it is burned with air that enters the com- bustion chamber at the same state, as shown in Fig. 15-27. Determine the adiabatic flame temperature for (a) complete combustion with 100 percent theoretical air, (b) complete combustion with 400 percent theoretical air, and (c) incomplete combustion (some CO in the products) with 90 percent theoretical air. Solution Liquid octane is burned steadily. The adiabatic flame temperature is to be determined for different cases.

Elements Of Electromagnetics
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EXAMPLE 15-8
Adiabatic Flame Temperature
in Steady Combustion
Liquid octane (C,H12) enters the combustion chamber of a gas turbine
steadily at 1 atm and 25°C, and it is burned with air that enters the com-
bustion chamber at the same state, as shown in Fig. 15-27. Determine the
adiabatic flame temperature for (a) complete combustion with 100 percent
theoretical air, (b) complete combustion with 400 percent theoretical air,
and (c) incomplete combustion (some CO in the products) with 90 percent
theoretical air.
C,H18
CO,
Tp H,0
I atm
25°C, 1 atm
Combustion
chamber
Air
25°C, I atm
Solution Liquid octane is burned steadily. The adiabatic flame temperature
is to be determined for different cases.
FIGURE 15-27
Schematic for Example 15–8.
Transcribed Image Text:EXAMPLE 15-8 Adiabatic Flame Temperature in Steady Combustion Liquid octane (C,H12) enters the combustion chamber of a gas turbine steadily at 1 atm and 25°C, and it is burned with air that enters the com- bustion chamber at the same state, as shown in Fig. 15-27. Determine the adiabatic flame temperature for (a) complete combustion with 100 percent theoretical air, (b) complete combustion with 400 percent theoretical air, and (c) incomplete combustion (some CO in the products) with 90 percent theoretical air. C,H18 CO, Tp H,0 I atm 25°C, 1 atm Combustion chamber Air 25°C, I atm Solution Liquid octane is burned steadily. The adiabatic flame temperature is to be determined for different cases. FIGURE 15-27 Schematic for Example 15–8.
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