Machine-translated by Google. Questions are authored in English.
Top

Discussion

A manufacturer replaces film cooling slots with effusion cooling through many small holes, recovering several per cent of the total airflow.

Why does this matter as turbine entry temperatures rise?

  • A.Film cooling raises nitrogen oxide emissions
  • B.Effusion cooling removes the need for dilution
  • C.The recovered air is needed for the primary and dilution zones
  • D.Effusion cooling is cheaper to manufacture

Answer: C

As exit temperatures climb, more air is needed to control the pattern and less can be spared for the walls. Distributing the same protection through many small holes uses less air, which is why effusion has displaced simple slots.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.