Surging in a compressor, particularly in centrifugal and axial compressors, refers to a condition where there is an unstable flow of air or gas through the compressor. This phenomenon occurs when the flow rate falls below ...
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A cascade control loop uses two controllers, where one controls the setpoint of the other for better stability.Can be 2 element or 3 element. One is Master others are slaves. Example Steam drum Level Controller / Absorber level Controller
Reflux is a part of the liquid that goes back into the system……….. Advantages 1 Reflux increases Purity 2 Control Over headTemperature 3 Maintain Concentration 4 Maintain Level 5 Wash Demisters
Hydrates are ice-like crystals formed when water surrounds gas molecules at low temperatures. This is the one of biggest problems at Gas plants. Indication 1 It decreases the flow. 2 increases DP 3 Blocks Tubing Prevention 1 Methanol Injection. 2 Increase Temperature 3 Provide Heat tracing
