×
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

The best way to arrange a discharge header

The best way to arrange a discharge header

The best way to arrange a discharge header

(OP)
In the case of a discharge header of a system of pumps in parallel (a total of five centrifugal pumps in the present case), must the outlet piping to the process be positioned after the last pump or can it start immediately before the last pump? By adopting the last arrangement, would there be loss in the flow capacity, some turbulence, or even loss of energy or a possible unbalancing of one or more pumps?
 

RE: The best way to arrange a discharge header

You should always seek a hydraulic balance through symetry.  Put one pump discharging to the center of the header, another pair at the 1/4 points and the last two on the ends, with the header feeding process from its center point.  A linear arrangement into a constant diameter & wall thickness header feeding process at one end will put the first pump at a higher head and lower flow operating point, the last pump at lowest head and highest flow, with all other pumps in a successively nonlinear progression in between as flow from each pump adds to the next and increases pressure drop dramatically in each segment of header, the last having 5 times the flow of the first.  For a linear arrangement it might make more sense to vary the header diameter, then it really wouldn't be a header, would it?  It would be a series of increasing diameter pipe segments.

**********************
"The problem isn't finding the solution, its trying to get to the real question." BigInch
http://virtualpipeline.spaces.live.com/

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