The diffuser is located immediately downstream of which section?

The diffuser is located immediately downstream of which section?

• A. The turbine stage
• B. The inlet
• C. The combustion chamber
• D. The compressor section

Answer: (D)

In a gas turbine flow path, the diffuser’s job is to slow down the high-velocity air coming from the compressor and convert that kinetic energy into static pressure so the flow enters the combustor smoothly and at a stable pressure. Because of this role, the diffuser sits immediately after the compressor section, providing a pressure rise and a uniform, subsonic flow into the combustion chamber. From there, the sequence continues to the combustor, then the turbine, and finally the nozzle. It isn’t placed after the turbine (that’s downstream of energy extraction), nor at the inlet (that’s upstream), nor after the combustion chamber (the combustor is fed by the diffuser).

In a gas turbine flow path, the diffuser’s job is to slow down the high-velocity air coming from the compressor and convert that kinetic energy into static pressure so the flow enters the combustor smoothly and at a stable pressure. Because of this role, the diffuser sits immediately after the compressor section, providing a pressure rise and a uniform, subsonic flow into the combustion chamber. From there, the sequence continues to the combustor, then the turbine, and finally the nozzle. It isn’t placed after the turbine (that’s downstream of energy extraction), nor at the inlet (that’s upstream), nor after the combustion chamber (the combustor is fed by the diffuser).