Gas Compressors Ltd (GCL)
GCL - Centrifugal Blower
An impeller is attached to a rotating shaft within a cylindrical housing. Gas drawn into the housing near the centre, is then thrown towards the perimeter. The imparted velocity of the gas causes a pressure rise and flow. Multi-stage machines direct the gas back to the centre of the next stage.
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- Slow speed of rotation gives exceptional wear part life.
- Single rotor is only moving part.
- Oil free gas path.
- Vibration free operation.
- Flow control through inlet throttling and speed control.
- No special foundation required, lowering civil costs.
- Can usually be direct driven – doing away with belts or gearboxes.
- Pulsation free gas discharge.
- Valveless porting means no drop off in efficiency between overhauls, and no valves to maintain or break in service.
- Simplicity: units are readily overhauled in the field without special tools.
- Efficiency is good on the larger flow machines.
- Quiet operation – often no sound attenuation is required.
- Lower efficiency on smaller flows.
- Higher capital cost on positive displacement blowers.
- Low maximum casing pressure.