Compressor Performance: scroll_compressor
Centrifugal, reciprocating, and rotary screw compressor typical performance envelopes — polytropic and adiabatic efficiency, head per stage, pressure ratio, speed range, and turndown by compressor type and flow range
| compressor type | flow range | adiabatic efficiency pct (%) | flow max acfm (acfm) | flow min acfm (acfm) | head per stage ft (ft) | notes | polytropic efficiency pct (%) | pressure ratio per stage max (dimensionless) | pressure ratio per stage min (dimensionless) | speed rpm max (rpm) | speed rpm min (rpm) | turndown pct (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| scroll_compressor | medium | 65 | 250 | 50 | 0 | Medium scroll (manifolded multi-stage or larger frame); typical HVAC chillers and refrigeration plants; efficiency 62-70%; oil-free versions for medical/food grade compressed air; limited to ~250 acfm for air compression | 0 | 5 | 2 | 1,800 | 900 | 0 |
| scroll_compressor | small | 68 | 50 | 1 | 0 | Scroll compressor: positive displacement orbital motion; oil-free hermetic or open drive; no valves - very quiet; fixed displacement (no turndown - on/off or variable speed only); adiabatic efficiency 65-72% at design point; pressure ratio up to 6:1 single stage; 1-50 acfm typical; HVAC and medical air applications | 0 | 6 | 1.5 | 3,600 | 1,800 | 0 |
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