What is the control method for reciprocating piston compressors?
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I would like to ask fellow sailors: what is the control method for reciprocating piston compressors? 1. Does the bypass regulate the return flow rate to control the inlet pressure? 2. Does the bypass regulate the return flow rate to control the outlet pressure? The compressors here come in those that control the inlet pressure and those that control the outlet pressure. I’m not sure what the difference is between these two control methods Experienced sea travelers, please share your insights widely.
Personally, I think variable frequency regulation is better
When the pressure in front of the machine is low, the bypass flow can be increased slightly to provide supplementary flow
It should be related to the normal production load of the compressor.
The bypass flow regulation is generally used to control the displacement. The compressor outlet pressure is usually controlled by the downstream process unit. Large compressors use variable-frequency control of displacement, which is more energy-efficient.