×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Booster pump for cooling coil

Booster pump for cooling coil

Booster pump for cooling coil

(OP)
Hello All, I have an application where I need to install a new cooling coil in an existing 30% water/ glycol distribution loop. The existing distribution loop has a 50 psig differential pressure set point across the supply and return piping maintained by a VFD driven pump. At full flow the new coil needs 90 psig. The existing pumps are not sized to provide any added pressure. I want to install a booster pump to the supply pipe to the coil to provide this added pressure.

Who makes this type of pump? Any pitfalls with this approach? All help is appreciated.

RE: Booster pump for cooling coil

Good spot for Primary-Secondary pump. Secondary pump will handle the new coil, and not upset the main loop. Pumps by Bell & Gossett, Taco, Armstrong, Goulds will work.
I have never heard of a coil requiring 90 psig. Must have lots and lots of rows.

RE: Booster pump for cooling coil

We seen coil loop pumps often. What you're proposing is normal. The trashcanman gave you good pump manufacturers.

Best to you,

Goober Dave

Haven't see the forum policies? Do so now: Forum Policies

RE: Booster pump for cooling coil

must be a huge system a 50 psi and 90 psi coil drop.

I (and all my maintenance staff) would recomment to never isntall Taco / Armstrong. Unless leaking is not a problem. Especially since glycol leaks even more than water.

RE: Booster pump for cooling coil

Um, forgive me for being a moron… 50 psid DP (pounds per square inch, differential) in your existing loop is extremely high. What device needs that DP? 90 psid for your new coil is 208’ head, where a normal coil might be 10’-15’ head. Are you talking about a process outside of HVAC?

RE: Booster pump for cooling coil

(OP)
Hello All, yes this is a special coil, 2 stage coil, 68 gpm at 90 psig data is straight from the manufacturer. This is 100% OA unit cooling aircraft(jumbos) parked at the gate.

RE: Booster pump for cooling coil

Ok. I'd suggest Grundfos. And yes, series pump installation is appropriate to boost pressure at this coil.

RE: Booster pump for cooling coil

(OP)
Thanks for comments

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources