×
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

Air cooler tube failure

Air cooler tube failure

Air cooler tube failure

(OP)

I would like to give my thanks to you by the excellent site you have and also by such detailed information.
Leakage from after cooler of air compressor in our power plant led us to shut down the compressor for several times .Visual inspection revealed severe corrosion of copper alloy tubes (SB-111). Corrosion was as a deep pitting from inside of the tubes in the area near the outlet tube sheet.Air is in the tube side and water in the shell side.The suction of the compressor are near the place that atmosphere is contaminated by ammonia gas.Is it possible that ammonia gas comming with air into commpressor be the cause of this failure.If yes how it can make this type of corrosion.
masoud
Any comments would be highly appreciated

RE: Air cooler tube failure

Masoud,
Hope this will asist you.

The Hendrix Group - corrosion of copper in oil and gas wells
... solutions and are highly resistant to ammonia SCC and ... Copper and the copper alloys
are normally the ... Coppers can preferentially corrode when in contact with the ...
www.hghouston.com/coppers/copperog.htm - 43k - Cached - Similar pages

Fixitnow.com: Gas Refrigerator Basics
... In gas refrigerator cooling units, the worst corrosion always occurs on the ... is eating
away at the cooling unit steel (ammonia doesn't corrode the steel ...
fixitnow.com/appliantology/gasfridgebasics.htm - 22k - Cached - Similar pages

RegO® Field Topics - Anhydrous Ammonia ( NH3)
... the potential to rapidly corrode copper, zinc, silver ... of compressed Gases,Compressed
Gas Association, Inc ... and Handling of Anhydrous Ammonia, American National ...
www.regoproducts.com/ftopics300.htm - 18k - Cached - Similar pages

RE: Air cooler tube failure

The other thing that is happening at the outlet end of the aftercooler is that you may be getting cool enough to get some condensation.  This may be why you are seeing pitting instead of general corrosion.

= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm

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