Mechanical Engineering - Compressors, Gas Dynamics and Gas Turbines - Discussion

Discussion Forum : Compressors, Gas Dynamics and Gas Turbines - Section 1 (Q.No. 42)
High air-fuel ratio in gas turbines
increases power output
improves thermal efficiency
reduces exhaust temperature
do not damage turbine blades
Answer: Option
No answer description is available. Let's discuss.
2 comments Page 1 of 1.

SANj said:   7 months ago
High air-fuel ratio means access amount of air. Has 3 important roles.
-> Cooling the outer surface of the combustion chamber.
-> reduce the exhaust temperature.
-> Control the flam by guiding the way.

Islam gamal said:   6 years ago
Excess air have 3 roles :

1- Cooling the outer surface of combustion chamber
2- Control the flame by guiding it away from walls
3- Mixed with combustion products to reduce its temp. To acceptable level to save the blades of turbine.

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