Design concept of Howden Screw Compressors
Compression is achieved by the intermeshing of two helical rotors contained in a suitable casing. Figures 1–4 give details of the compression cycle.
The Howden twin screw compressor is a positive displacement rotary design. As such it has the characteristics and stability of reciprocating compressors but in addition offers particular advantages:
- Reduced physical size.
- Fewer moving parts.
- Low vibration.
- Extended operating life cycle.