Typical Efficiency for Compressor

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%

Reciprocating :
- 65% with Compression ratio of 1.5
- 75% with Compression ratio of 2.0
- 80-85% with Compression ratio of 3-6

Rotary : 70%

Other Interesting Articles

• Determine Interstage Pressure for Multi-stages Centrifugal Compressor
• Pressure Head Increases for Fan and Blower
• Simple Method For Compressor Settle Out Using HYSYS
• Adjusted Method For Compressor Settle Out (with Vapor & Liquid) Using HYSYS

Determine Interstage Pressure for Multi-stages Centrifugal Compressor

How to determine interstage pressure for multi-stages centrifugal compressor ?

For a n-stages centrifugal compressor system with inlet and outlet pressure of P₀ and P_n, the compression ratio (r) should be about the same in each stage.

r = (P_n/P₀)^(1/n)

P₁ = r.P₀
P₂ = r.P1
P₃ = r.P2
.
.
.
P_n = r.Pn-1