CENTRIFUGAL COMPRESSOR

[MIANCH]

DEAR COLLEAGUES,
WILL YOU PLEASE EXPLAIN FOLLOWING THREAD.

CAN WE RUN CENTRIFUGAL COMPRESSOR BY THROTTLING SUCTION AND DISCHARGE VALVES
WITH REGARD
SAFDAR TOOR

 

[TD2K]

Yes, throttling centrifugal compressors with either suction or discharge valves is done. Speed is more commonly used but since you didn't mention it, I'm assuming your compressor is a fixed speed unit.

In either case, you need to ensure you remain within the compressor's allowable operating envelope for flow, head, pressures, etc.

 

[abeltio]

Adding to TD2K point (but by no means the ultimate word):
In case you throttle the compressor discharge, beware of going below the recommended min flow, a safety relief valve bypassing back to the supply should be installed to avoid damage to the compressor...and in any case recirculation cannot be permanent due to overheating.

 

[quark]

Again forgot something to tell TD2K. (There is some addition to your point again)

Cheers,

 

[TD2K]

Always know I can count on you Quark ;-)