Compressor efficiency is very much subject to compressor type, design, etc. It possibly range from 50% to 90%.
Each compressor from different manufacturer may have different efficiency.
Following are some typical compressor efficiency may be used during design phase.
It shall be decided by compressor manufacturer.
Centrifugal : 75-80%
Note : nowadays several manufacturers may have some compressor efficiency upto 84%.
Centrifugal : 75-85%
- 65% with Compression ratio of 1.5
- 75% with Compression ratio of 2.0
- 80-85% with Compression ratio of 3-6
Rotary : 70%