Compressor “surge” is a low-flowphenomenon known to exist in “dynamic,” i.e., centrifugal and axialcompressors found in petrochemical plants, liquefied natural gas(LNG) facilities ..
Compressor “surge” is a low-flow
phenomenon known to exist in “dynamic,” i.e., centrifugal and axial
compressors found in petrochemical plants, liquefied natural gas
(LNG) facilities and pipeline compressor stations. A simplified
definition would describe surge as a series of rapidly occurring
reversals of the pressurized gas flow.
Surging can cause serious damage to
compressor internals. Thus, surge must be prevented by applying a
suitable control strategy. In typical antisurge systems, a
quick-acting valve recycles a portion of the compressor discharge
flow back to the compressor suction. The compressor itself is thus
always exposed to a gas volume suffi
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