×
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

Flow direction for Orifice meter in vertical pipe

Flow direction for Orifice meter in vertical pipe

Flow direction for Orifice meter in vertical pipe

(OP)
Why is it important that if I have liquid, the flow direction should be from bottom to top. and opposite in case of gas; when using orifice flowmeter in vertical run?

RE: Flow direction for Orifice meter in vertical pipe

Liquid often has bubbles of gas in it; you want them to pass through only once.  In a downward flowing stream, you have to fight the bubbles' buoyancy to make them go down, and there may not always be enough velocity to do that.

Similarly for gas streams; they may carry blobs of liquid or particles, and you want gravity to help send them on their way.

 

Mike Halloran
Pembroke Pines, FL, USA

RE: Flow direction for Orifice meter in vertical pipe

Another reason for upward flow in case of liquids, particularly for volumetric flow type meters, is to ensure full pipe flow. This will ensure that the pipe cross sectional area is constant always.

RE: Flow direction for Orifice meter in vertical pipe

Bubbles up, dirt down.
Which is more prevalent?

JMW
www.ViscoAnalyser.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