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!

*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.

Jobs

Gas Compressor Station Pressure Drop

Gas Compressor Station Pressure Drop

(OP)
When determining the overall compression required for natural Gas across a compressor or compressor station. What Delta P drop should I used for the suction and discharge of the compressor station assuming. Is there a rule of thumb of 5psig or something of the like for each side ( suction and discharge). Or is there a pressure drop rule for each componene like scrubbers valves, coolers and Ts etc. Any help will really assist me. Also is there a user friendly software out there that could simulate my velocities and pressure drop in my compressor station yard piping. Thanks

RE: Gas Compressor Station Pressure Drop

I don't understand the way of asking questions. You would like to have some rough figures or order of magnitude, that is fine, but you do not give any info on the type of compressor station, the power involved, the size. etc nothing.

There are gas compressor stations for pipeline, for gas export, there are small machines used for boosting etc. So how can we help?

"If you want to acquire a knowledge or skill, read a book and practice the skill".

RE: Gas Compressor Station Pressure Drop

(OP)
Very True. Not enough detail. This would be a 25,000 HP Interstate Mainline station with slow-speed integral reciprocating compressors such as Cooper Bessemer GMWs compressor at or above a 1Bcf.

RE: Gas Compressor Station Pressure Drop

No idea about reciprocating machine of this size.

On a typical pipeline booster group (means compressing to pipeline pressure 70-75 bar) and rated about 10-15 MW power, I would use conservatively 0.5 to 1 bar at inlet (to account for the line losses + scrubber) and about same at discharge but an easy 2.5 bar if there is further an intercooling between stages.

But this is my 2 cents...

"If you want to acquire a knowledge or skill, read a book and practice the skill".

RE: Gas Compressor Station Pressure Drop

I'd say that's pretty close. Probably something like 25-50 psi pressure drop should be allowed, say 1/2 on the inlet side and 1/2 on the outlet side, due to inlet and outlet pressure control valves, bends, scrubbers, meters, headers, etc., but of course this is highly dependent on exactly what equipment will be placed within.

Intercooler pressure drops would not normally be included when specifying compressor requirements, but of course would have to be accounted for in design of the machine for a given compression ratio.

you must get smarter than the software you're using.

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


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