There leakage losses between the impeller and casing in a centrifugal compressor as well, but the leaking gas still ends up being centifuged outwards to the compressor outlet. For an axial compresor, gas that leaks ober the blade tips is effectively going back "upstream" and most of the energy that was put into it is wasted.2) Why centrifugal design is more appropriate/efficient for lower sizes? And why is it a less efficient design?
To repeat post #2, I don't think we can fix the confusion unles you tell what you mean by "efficient design" here.Now I am confused. Aren`t centrifugal turbines supposed to be a "less efficient design"?