Why isothermal efficiency is used as a reference in reciprocating compressor whereas isentropic efficiency is used in axial or centrifugal compressors? - Quora
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general aviation - What is the difference between axial compressor blades and centrifugal compressor blades? - Aviation Stack Exchange
![general aviation - What is the difference between axial compressor blades and centrifugal compressor blades? - Aviation Stack Exchange general aviation - What is the difference between axial compressor blades and centrifugal compressor blades? - Aviation Stack Exchange](https://i.stack.imgur.com/sGeeK.jpg)