Compressor Selection Maps: screw
Compressor selection maps per API 617/618/619 — operating envelopes, polytropic efficiency ranges, specific power, surge and turndown limits, molecular weight suitability, discharge temperature limits, capacity control methods, pulsation requirements, lubrication/maintenance intervals, and selection criteria for centrifugal, reciprocating, screw, scroll, diaphragm, and axial compressors
| compressor type | record id | api standard | molecular weight max (g/mol) | notes | parameter category | size class | typical applications |
|---|---|---|---|---|---|---|---|
| screw | discharge_temp | API 619 | 300 | Oil-flooded discharge temperature typically 150-250F due to oil cooling; dry screw up to 350F; oil viscosity must remain adequate at operating temp; separator/cooler downstream maintains oil temperature; rotor clearance design temp | temperature_limits | oil_flooded | Oil-flooded screw compressors |
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