Jump to content

Modeling Heat Transfer


xllluzionx

Recommended Posts

Hello everyone!

 

My girlfriend has been struggling with a project for the past two weeks now so I am here to try and get help for her. Here is what she told me that she needs to do.

 

I'm trying to model the heat transfer from a hot resistor across air to a battery. I need to keep the battery warm (20 degrees C warmer than the exterior temperature). It's the convection through air that I can't prove anymore, and the plots I'm getting say my battery is even colder than I told it to start at.

Any size 'open' box, like a trash can. Then put a tall box or cylinder in it, next to but not touching the wall.

I'm giving the rod a power output of 10 W and setting my initial temperatures of everything to 295 K. I'm setting a low convection like 2 W/m^2K in a 300K ambient enviornment. After integrating through 5 minutes the temperature plotted by the solver is way colder than the initial temps and there is no indication that convection is influincing the wall by the rod. I'm also positive that the rod is a power source, and not a power sink.

I have never used the program myself so I'm not sure if this is enough information, but I would really appreciate any feedback so I can pass ideas her way or ask her for more clarification. Thanks!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...