×
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

Unbalanced Chilled Water Piping

Unbalanced Chilled Water Piping

Unbalanced Chilled Water Piping

(OP)
we have a main chilled water pipe branched to tow circuits , one of these circuits has been canceled and by passed. when we try to close that bypass and keeping the all water go in the other circuit the cooling capacity of that circuit is decreasing. Is that physicaly accepted!!?

any response will be appreciated.

RE: Unbalanced Chilled Water Piping

If I understand you correctly, when you close off the chilled water flow to the un-used leg forcing all the chilled water to the leg in service, the cooling capacity goes down?

That doesn't sound right to me, there's got to be something else going on in your system if that is what you are seeing.

RE: Unbalanced Chilled Water Piping

You have changed the system curve significantly.  You may have gone far enough back on your pump curve to have reduced flow to your remaining online system.

You had a total water flow = flow to circuit one + flow to circuit two.  Now you are taking flow to circuit two out of the system.  Not knowing how your piping network is designed.  You may have less flow to circuit one now than you did before.

RE: Unbalanced Chilled Water Piping

MIN (more info needed)

RE: Unbalanced Chilled Water Piping

DMc has a point.You should tell us discharge pressure of pump before and after bypass, give name plate details(head and capacity) and line sizes.

RE: Unbalanced Chilled Water Piping

check the chilled water loop pressure on the system eather is to much or not enough check before and after pressure if is to much the water travel to fast or to slow trough the system and you will loose the cooling efficiency like DMC and quark sed check the pump inlet and outlet pressure. also will be good if you can install a gage to see the diferensial pressure in and out of the chiller. go by the design pressure drop across the coil and at the further point on your system.

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