Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

ME out there and any orther Geo installer please

GW
GW Member Posts: 4,832
I'm installing a 3 ton system; the wrightsoft program is saying i should pipe the two vert bore in series. When I click the parallel option the program is saying the Reynolds number is too low. Thanks for any thoughts, I just need to decide before mr drill shows up

Gary

<A HREF="http://www.heatinghelp.com/getListed.cfm?id=368&Step=30">To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"</A>
Gary Wilson
Wilson Services, Inc
Northampton, MA
gary@wilsonph.com

Comments

  • Reynolds numbers don't lie...

    Just make sure you can maintain the flow required with the head generated.

    If you go parallel, and double the flow, the numbers may click in...

    Plastic is SUCH a great insulator ;-)

    ME
  • GW
    GW Member Posts: 4,832
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    gary@wilsonph.com
  • Rich L.
    Rich L. Member Posts: 414
    More holes?

    Could you go more bores, not as deep? Once you're a couple of feet below your local frost line you start getting into stable ground temps. Then you could go shorter loops, parallel, lower head and smaller pump. May cost a little more upfront on the bores (hole set-up) but would have a greater lifecycle payback in efficiencies.
  • Mark Custis
    Mark Custis Member Posts: 537
    Rich is right

    Just get below frost line. 32*F glycol will make 125, 135*f water all day long at a 4 plus COP.

    I build a radiant floor in a frost line plus a foot or two. Then pipe to the heatpump. I am waiting to use the insulated transportaion piping stuff.

    Geo can be sooooo easy.
  • Plumdog_2
    Plumdog_2 Member Posts: 873
    32*F Glycol

    How do I mix up a batch of that 32*F Glycol?
  • Craig R Bergman
    Craig R Bergman Member Posts: 100
    3 Ton Geo =

    three bore holes. Vertical bores in Iowa *GENERALLY* require 150 ~ 250 ft deep bores. Piped parallel with reverse return should run like a champ.

    Bergy
  • GW
    GW Member Posts: 4,832
    cool

    Thanks Craig,

    I'm into rules of thumb just like the next guy; are you saying ignore the reynolds number? If I pipe it parallel the velocity is too slow.

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    gary@wilsonph.com
  • Rich L.
    Rich L. Member Posts: 414
    Too Slow?

    Velocity is going to be a product of your pipe size, length and pump size.

    We generally reserve using reynolds numbers for sizing loop fields for large scale projects like schools and commercial facilities, generally speaking in the hundreds of tons on up. I'm not saying you need to disregard those numbers on a three ton system, but I've never gone wrong with Craigs rule of thumb. :)
This discussion has been closed.