Compressed Air vs. Free Air - Compression Ratio
![](https://www.engineeringtoolbox.com/docs/documents/1190/ratio-free-compressed-air-diagram.png)
The ratio of compressed air pressure to free air pressure.
![](https://www.airbestpractices.com/sites/default/files/Figures%201a_0.jpg)
Centrifugal Air Compressor Basics Part II - Understanding the Basic Performance Curve
![](https://www.hpccompressors.co.uk/media/159629/hpc-compressors-picture3.png)
The energy efficiency rating of a compressor is called Specific Power – the lower it is, the more you save in energy and money
![](https://www.engineeringtoolbox.com/docs/documents/846/air_flow_receiver_volume.png)
Compressed Air Receivers
![](https://www.airbestpractices.com/sites/default/files/Figures%201b_0.jpg)
Centrifugal Air Compressor Basics Part II - Understanding the Basic Performance Curve
![](https://us.kaeser.com/Media/CSG%20150%20A%201400x788_46-160495-650x366.png)
Air Cooled Compressor, Oil Free Air Compressor
![](https://www.engineeringtoolbox.com/docs/documents/1523/air-discharge-hose-diagram.png)
Scintillement Étranger Antagonisme psi to cfm calculator
![](https://www.engineeringtoolbox.com/docs/documents/1190/ratio-free-compressed-air-diagram.png)
Compressed Air vs. Free Air - Compression Ratio
![](https://www.pumpsandsystems.com/sites/default/files/2009_CompressionRatio_fig3.jpg)
Why Compression Ratio Matters
![](https://www.hpccompressors.co.uk/media/159628/hpc-specific-power-table-_picture.jpg)
The energy efficiency rating of a compressor is called Specific Power – the lower it is, the more you save in energy and money