×
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

condenser back pressure

condenser back pressure

condenser back pressure

(OP)
i have a problem with our condenser backpressure, it was suppose to drop during winter season but it is increasing. can you please help me i tried to look at the cooling water inlet temperatures but this seems to be not good enough.

RE: condenser back pressure

Sounds like excess noncondensible gases are building up in the dearation zone of the condenser.

Maybe the air ejector is not working properly ( check the cooling water flow and temp to the vaccuum pump skid)

Can also be excess air is leaking in thru cracks in teh condenser casing, LP heater casing or instrument connections, etc.

The better way to operate is to control the cooling water temperature entering the condenser to not less than the min value determined by the condenser vendor, while maintaining 100% design cooling water flowrate. This is to avoid causing subcooling of the condensate and the associated high oxygen content in the condensate, and also avoid other problems with too low a flowrate of cooling water.

RE: condenser back pressure

A couple of questions:  what is the heat sink for the condenser, a lake?  cooling tower? river?  how is the CW chemistry maintained? (pH levels, etc.)

is this a new problem or ongoing? when were the water boxes vented? cleaned?  is the condenser outside or inside?

review the items identified by dave above..

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