Advertisement
Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
If we do not hit our goal we will be forced to close the site.

Current status: https://keepboardsalive.com/

Annual subs are best for most impact. If you are still undecided on going Ad Free - you can also donate using the Paypal Donate option. All contribution helps. Thank you.
https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.

pressure required?

  • 07-04-2012 10:02PM
    #1
    grousedogtom
    Registered Users, Registered Users 2 Posts: 467 ✭✭


    HI all
    I am a sizing a suitable submersible pump to go about 90 meters in a bored well which it will pump to a 300 lt pressure vessel on top of the well.From there the water needs to climb to an elevation of about 75 meters at its highest point, my question is am i right in saying i will need a pump with a head of at least 165 meters = 235 psi pressure to achieve this if the water in the well dropped down near the pump,my confusion is 235 psi is over 16 bar which seems very excessive,am i calculating something wrong?


Comments

  • #2
    Pete67
    Registered Users, Registered Users 2 Posts: 1,257 ✭✭✭Pete67


    No, your calculations are spot on. The pump would also need to deliver a reasonable flow at that pressure.

    You could also pump in stages - a submersible pump to raise the water to the ground level pressure vessel, and a second pump to pump from there to the location at 75m elevation.


  • #3
    grousedogtom
    Registered Users, Registered Users 2 Posts: 467 ✭✭grousedogtom


    Pete67 wrote: »
    No, your calculations are spot on. The pump would also need to deliver a reasonable flow at that pressure.

    You could also pump in stages - a submersible pump to raise the water to the ground level pressure vessel, and a second pump to pump from there to the at 75m elevation.

    Yes flow is also important here, there's a 2 inch pipe in place, i will find out volume required and work pumps from there, the second pump seems to be the best option maybe a vertical multi stage in the pumohouse, also are pressure vessels rated to 10 bar and what kind of pipe would take this pressure, the pipe I usually use is the blue 12 bar mdpe. Thanks again


Advertisement