Contact US

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!

*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

Rules of Thumb for Ejector Motive Gas estimate

Rules of Thumb for Ejector Motive Gas estimate

Rules of Thumb for Ejector Motive Gas estimate

dear all,

I would like to know if there are typical rules of thumb for correlating the required motive gas requirement for a gas ejector to the inlet load suction gas ?



RE: Rules of Thumb for Ejector Motive Gas estimate

Motive gas flow required will increase with both suction flow rate and differential pressure requirements. It is basically an energy balance.

RE: Rules of Thumb for Ejector Motive Gas estimate

For eductors, I think the high number of variable prevents ROTs from being reliable or practical. Such ROTs can be stated but they have to be qualified by a number of conditions.

The dynamics of a gas (e.g. steam) ejector are interesting. You can get a sense of these dynamics by studying the curves provided by the manufacturers. There's plenty of good info on this on the internet. For example, google "Steam jet ejectors performance curves".

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! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close