Guest
Hi friends:
I am designing a large cooling water system consisting of centrifugal pumps,cooling towers and shell and tube heat exchangers.I have been told that large centrifugal pumps should be equipped with a discharge pressure control valve.This valve will be partially open while pump is started and gradually opens to deliver at operating pressure.This is done to reduce water hammer and protect the pipework from large fluctations.
I am dealing with a pump capacity of about 16000 gpm and discharge pressure of 150 psi.Do I need such a pressure control system?What type of valves are used for this purpose? Whatis the time to be allowed for flow stabilization( before the valve can open say 100%)?
I would like to hear more about this from guys with experience on such large pumping systems.
Vic23
I am designing a large cooling water system consisting of centrifugal pumps,cooling towers and shell and tube heat exchangers.I have been told that large centrifugal pumps should be equipped with a discharge pressure control valve.This valve will be partially open while pump is started and gradually opens to deliver at operating pressure.This is done to reduce water hammer and protect the pipework from large fluctations.
I am dealing with a pump capacity of about 16000 gpm and discharge pressure of 150 psi.Do I need such a pressure control system?What type of valves are used for this purpose? Whatis the time to be allowed for flow stabilization( before the valve can open say 100%)?
I would like to hear more about this from guys with experience on such large pumping systems.
Vic23