combustion chamber 1/5

Also known as the combustor, burner, flame

holder

Intro Process Fuel Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

ocation

ltypically located directly between the compressor

diffuser and turbine section

Intro Process Fuel Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

omponents

C

Intro Process Fuel Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

ir Flow Types

A Primary Cooling Intermedia

te DilutionIntro Process Fuel

Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

Intro Process Fuel Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

Intro Process Fuel Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

Primary Air= approximately 25% of

total air

Remaining 75%= used to form an air

blanket around the burning gases and to lower the temperatureIntro Process Fuel

Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

• Cooling Air drops the temperature to a value that

the turbine inlet guide vanes can withstand

• Cooling air is “secondary” air

(controlled and directed by holes and louvers)

The air used for burning fuel is “primary” air.

Intro Process Fuel Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

• Continuous airflow helps prevent CARBON

from forming on the inside of the liner• Carbon deposits can

cause HOT SPOTS, block cooling air

passages, which then shortens burner life  

Intro Process Fuel Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

urposeP

Intro Process Fuel Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

• Blends air and fuel proficiently

• Controls the burning of large amounts of fuel and air efficiently

• Dampens the hot combustion gases

• Ensures that the air is expanded and accelerated

** must be accomplished with minimum pressure loss and

maximum heat release

Intro Process Fuel Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER

Combustors play a crucial role in

determining many of an engines operating

characteristics, such as •fuel efficiency, •levels of emissions and •transient response (the response to changing conditions such a fuel flow and air speed)

Intro Process Fuel Supply Types MaterialsIntro Process Fuel

Supply Types MaterialsAE 424AE 424COMBUSTION CHAMBERCOMBUSTION CHAMBER