×
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

Pressure and Flow Measurement

Pressure and Flow Measurement

Pressure and Flow Measurement

(OP)
I have a system which conveys powder in an air stream. The air is conveyed by a fan in the middle of the system
The system goes through a number of unit stages and pipework.

I need to develop a number of system curve and understand the pressure profiles and velocity through the system on different powders and at different flowrates.

The system currently has no measurements at all.What is the best way of measuring pressure throuh the system and then how do I calculate the associated velocity.

I am comfortable to do the pressure drop calcs for the pipes, but have no real data to establish pressure drop accross cyclones and filter bags etc. The cheaper solution, the better

I have heard of pitot tubes but not too sure if this would be applicable and how they work and what calcs I would need to do.

Any suggestions?  

RE: Pressure and Flow Measurement

For low cost draft range pressure gauges consider the Dwyer Magnehelic.  Draft range transmitters cost more.  Flow measurement is not as easy.  You may want to measure the flow upstream of the power as the pitot tubes could plug.

Consider posting in the HVAC forum if your system is similar to HVAC ducts.  Also consider the measurement instrument forum.

RE: Pressure and Flow Measurement

You don't have to have a gage at every point that you need to determine a differential pressure, just a point to which to attach a gage to take the readings.  You can calculate the velocity from known conditions but a pitot tube will give you the velocity profile across the duct or pipe which might be important to you since you are handling powder.

rmw

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