×
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

DI water cooling tower

DI water cooling tower

DI water cooling tower

(OP)
I'm wondering if anyone knows what kind of chemicals are needed for a cooling tower (Assuming that the cooling tower is upgraded to handle corrsion problem) that uses DI water instead of raw water.  What would the blowdown rate be?  Thanks a lot!

RE: DI water cooling tower

Yor best bet would be get with a CTW chemical supplier and discuss you situation with him. He ins't hardly going to know what to do with DI make up water.  Watch out for the over sell get a couple of proposals.

A lot depends on you system layout and what the demands on it are and possible contaminates along with the materials of construction.

RE: DI water cooling tower

Blowdown rate depends upon your input water quality. When you use makeup water with a TDS below 100ppm you can go from 5 to 6 cycles of concentration. With DI water you can go higher but DI water, instead of helping you to reduce corrosion, it infact increases the rate of corrosion. Just mind that DI water is more hungry for ions. As unclesyd correctly said, have a chemical supplier analyze your system and suggest.

Regards,

Believe it or not : A Neutrino is so mass less(and electrically neutral) that, a conservative estimate states, it can pass through a 50 light year thick lead block.

RE: DI water cooling tower

use treated water not DI water. otherwise you'd just be asking for trouble as your pumps may not tolerate the associated corrosion mentioned ion the previous response.



RE: DI water cooling tower

Here is a very good website:

http://www.awt.org/

The article on "white rust" is very informative.
The also have a lot of good links.

RE: DI water cooling tower

Do not use DI water (Deionised water) as this would call for Stainless steel for Material of construction. If the water quality is bad, then you may think of softening the water (Replace hardess with Na ions).

Fix circulating cooling water quality. From the make-up watr quality, you will be able to find out the blowdown rate and make-up rate. Contact the cooling water chemical dosing suppliers for the chemical dosing and they will also advise you the blow down rates.

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