×
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

Icepak: determination of energy

Icepak: determination of energy

Icepak: determination of energy

(OP)
So my convergence criterion has been questioned when using IcePak.  I can show that mass flow in equals mass flow out, but my boss wants to see energy in and energy out.  I know you can do heat flow in and out, but it doesn't seem to be making sense.

It says 1W flows through the entrance then there is a 100W heats source within the chamber.  The exit flow then states that 1W is leaving, shouldn't this be 101W? Walls are default(which I thought was adiabatic). Anybody have any suggestions or need more info to give me some advise?

RE: Icepak: determination of energy

at steady state, then energy in would equal energy out.  If you haven't achieved steady state, then you might be accumulating energy within the container.

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