Aerodynamic surge margin & antisurge control line position for centrifugal compressors, per API 617.
Understand surge phenomena, antisurge control strategies, and control line positioning
Surge margin is the percentage difference between the operating flow and the surge flow, indicating how close the compressor is to its minimum stable flow limit.
It calculates surge margin, control line positioning, and minimum stable flow requirements per API 617 antisurge control guidelines.
Surge causes flow reversal and mechanical damage. Antisurge control ensures the compressor operates above its minimum stable flow per API 617 guidelines.