antisurge for large (2 stage) compressors
antisurge for large (2 stage) compressors
(OP)
hi everyone,
can anyone explain to me what exactly is antisurge in compressors, what causes it and how does it affect the machine. also how is it controlled, what is this whole issue of antisurge control.
thanks
can anyone explain to me what exactly is antisurge in compressors, what causes it and how does it affect the machine. also how is it controlled, what is this whole issue of antisurge control.
thanks





RE: antisurge for large (2 stage) compressors
Complex subject, but in a nutshell it has to do with maintaining a certain amount of flow through the compressor.
It is at low flows that the flow characteristic of the machine is unstable. It can be a seismic experience if you are on the compressor deck when the machine goes into surge...
Simple systems use flow/diff. pressure to control the recycle valve. More sophisticated systems used a combination of discharge flow, machine d/p, and temperature to detaermine the on-set of surge and adjust the recylce valve accordingly.
RE: antisurge for large (2 stage) compressors
The other extreme is the stone.