×
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

Filling a submersible enclosure with nitrogen

Filling a submersible enclosure with nitrogen

Filling a submersible enclosure with nitrogen

(OP)
I have a submersible enclosure approx. 60 cubic feet in volume, with some mass inside to take up maybe 1/4 of the volume.  Anyway,  I had a Nitrogen tank with a regular set at 3.5-4.0 psi max, the tank was 90 cubic feet at 2200 psi.  I was trying to fill the enclosure with around 4 psi, but when doing so the enclosure seemed to equalize at 2 psi and the gauge on top would not increase pass 2 even though the tank clearly had plenty of Nitrogen left in the cylinder.  What am I missing here?

thanks in advance

RE: Filling a submersible enclosure with nitrogen

What is the regulator effective range as appears in the manufacturer documentation?

RE: Filling a submersible enclosure with nitrogen

(OP)
3.5 Psi is the max on the regular.  I had it turned wide open.

RE: Filling a submersible enclosure with nitrogen

1)submerged enclosure
2)with some mass inside to take up maybe 1/4 of the volume.
Please clarify the above.
Is enclosure surrounded by water, etc
What is the mass initially inside and what is meant by the 1/4?

RE: Filling a submersible enclosure with nitrogen

(OP)
No, the unit is not in water..but the enclosure is submersible.  It has a motor and other copper inside that take up the volume.

RE: Filling a submersible enclosure with nitrogen

sounds like the problem is physical and not thermodynamic, there is no reason for this to happen.

I have trouble at work all the time with CO2 tanks that will plug when being used because of the change in temperature, but they are being released into the atmosphere, check to make sure you don't have a leak because if air can get into your line or regulator it will freeze and it won't go any further. Is the gas leaking out of your vessel? does the indicator on the vessel work well? does the regulator work? sounds like you need to replace or fix one part of your setup

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