The specific meaning of the abscissa on the compressor anti-surge curve
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What does the horizontal axis HC (%) in the compressor anti-surge curve represent? How is the anti-surge margin calculated? I hope experts can give some guidance! :handshake
Take a look at the \"Petroleum and Chemical Industry Automatic Control Design Manual\"
The horizontal axis represents the inlet flow rate, but this flow rate is calculated by converting the pressure difference transmitted by the differential pressure transmitter using a specific formula. The anti-surge margin is specified, generally at 10%. In other words, the surge curve determined by the compressor design is tested through surge experiments (usually at five points), and then the anti-surge line is calculated by the personnel responsible for designing the control system. Typically, the anti-surge display for a compressor shows two lines: the surge line and the anti-surge line. If there is a third one. It’s the line that’s about to be connected.