Centrifugal or Vertical Turbine?
Centrifugal or Vertical Turbine?
(OP)
We are working on an environmental remediation process design for collection of spring water into a wet well/sump (5' diameter x 10' deep) and then pumping the water through carbon vessels for treatment. Typical flow rates are 10-25 gpm, but during heavy rains can go up to 500 gpm. We are considering 2 parallel lines with one small (5 hp) and one larger (25 hp) pump on each line, using a pressure transducer to control which pumps go online. Originally, we were considering vertical turbine pumps with vfd for increased efficiency. After looking at the sump design, we may only need 3'-4' of suction lift, so centrifugal pumps (also with vfd) may be a more economical option. Any advice on which type of pump to select based primarily on reliability and maintenance issues? The assumed max discharge pressure is 75 psi.





RE: Centrifugal or Vertical Turbine?
BTW, VFDs don't increase efficiency. In fact they reduce efficiency by somewhere from 3 to 5%
Why have VFDs? One would normally run such an installation by turning on a pump at normal operating speed whenever the level got too high and turn the pump off when it gets low. Otherwise don't run NOTHING you don't need to be running. That operatng philosophy will help both your power consumption and maintenance issues FAR more than worrying about choosing between one or the other type of pump.
**********************
Kermit http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy"
....
http://virtualpipeline.spaces.live.com/
RE: Centrifugal or Vertical Turbine?
RE: Centrifugal or Vertical Turbine?
RE: Centrifugal or Vertical Turbine?
It might be the same old story, just because the technology is there doesn't mean it has to be used.
RE: Centrifugal or Vertical Turbine?
Either you overlooked something, or you have some way of pumping off the excess water which you failed to mention.
"Scientists dream about doing great things. Engineers do them." -James Michener
RE: Centrifugal or Vertical Turbine?
RE: Centrifugal or Vertical Turbine?
**********************
Kermit http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy"
....
http://virtualpipeline.spaces.live.com/
RE: Centrifugal or Vertical Turbine?
Johnny Pellin
RE: Centrifugal or Vertical Turbine?
RE: Centrifugal or Vertical Turbine?
RE: Centrifugal or Vertical Turbine?
RE: Centrifugal or Vertical Turbine?
RE: Centrifugal or Vertical Turbine?
RE: Centrifugal or Vertical Turbine?