Pump Recirculation - Your Opinion
Pump Recirculation - Your Opinion
(OP)
Hello Everyone,
I would like to get your advice on whether or not I should have a pump recirculation loop installed on a cooling loop we're providing.
It is pumping water at 200F at a rate of 150 usgpm @ 35-45 ft of head.
I'm not all that familar with pumps but from what I've read on this site it seems like we should have one. I know there is a guy on the current site I'm on who believes all pumps of this site should have one despite it's lower pressure requirement.
Please let me know if any other information would be helpful.
Appreciate the help,
Cheers.
I would like to get your advice on whether or not I should have a pump recirculation loop installed on a cooling loop we're providing.
It is pumping water at 200F at a rate of 150 usgpm @ 35-45 ft of head.
I'm not all that familar with pumps but from what I've read on this site it seems like we should have one. I know there is a guy on the current site I'm on who believes all pumps of this site should have one despite it's lower pressure requirement.
Please let me know if any other information would be helpful.
Appreciate the help,
Cheers.





RE: Pump Recirculation - Your Opinion
YOU need to map your system's operating point(s) onto your pump's curve, and see how efficiently your pump is running.
That will tell you what to do next.
Mike Halloran
Pembroke Pines, FL, USA
RE: Pump Recirculation - Your Opinion
RE: Pump Recirculation - Your Opinion
RE: Pump Recirculation - Your Opinion
Also, calculate the suction specific speed of the pump and follow typical guidelines for minimum flow as % of BEP based on the suction specific speed.
Basically, the higher the suction specific speed, the closer your pump needs to run to BEP and more likely you need a minimum flow bypass.
RE: Pump Recirculation - Your Opinion
RE: Pump Recirculation - Your Opinion
Its a pretty low power pump in any case.