The inlet valve of the centrifuge is set at 100%, but the bypass valve remains at 15–20% open. Why is this happening?
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Ingersoll Rand centrifugal compressor three-stage compression
This is mainly used for fine adjustment under low load conditions. However, it is better that suction regulation is beneficial for energy savings, but it can easily lead to surge during normal operation.
If the bypass valve stays open, isn’t that a waste?
The unit needs maintenance; it seems to have been turned on not long ago. Once the pressure in the main pipeline system stabilizes, the compressor system will automatically close the bypass valve； Another scenario is when the gas consumption at the backend is relatively low; the compressor system cannot be adjusted and can only vent gas, with the gauge indicating that it is already at the minimum load level.
It remains this way as long as it is operating normally; there are three centrifuges, with two in use and one as a backup. The outlet of this centrifuge is at the very front
If the other unit is not operating at full capacity, it might be possible to shut down this one