×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

compressor discharge controller

compressor discharge controller

compressor discharge controller

(OP)
Good morning / evening ,



We have for PYGAS unit twin rotary compressor for recovery the hydrogen , the discharge controller maintain the discharge flow 7 tons , in case emergency we loss the hydrogen & the compressor be under circulation , the discharge controller if Auto will close to maintain the pressure & the discharge flow will come down & will trip the compressor . I have suggestion to install minimum close limit 50% for discharge controller .

Any advised will be appreciated.

RE: compressor discharge controller

Errr, if there is no hydrogen to compress which is why the compressor goes into recycle, how will keeping the discharge valve open work?

Why is your compressor tripping on recycle (I assume this is what you mean by "under recirculation?)

A sketch or schematic always helps to understand your situation and ask questions

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: compressor discharge controller

Standard approach is to install a recycle line and control valve around the compressor to handle this case. The recycle valve works through a select switch to operate on the more demanding deviation, which may be either the high set discharge pressure controller or the low set suction pressure controller. The case you describe is handled by the low set pressure controller. Pls see standard capacity control scheme for fixed speed compressors - this capacity control scheme is used for positive displacement compressors also, like this one. Talk to your plant control systems engineer who may be able to help if you are not familiar with this suggested scheme.

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



News


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