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Heating of copper wire... - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 Post subject: Heating of copper wire...
Posted: Thu Jul 26, 2007 9:58 am 
 
Captain
User avatar

Joined: Thu Jul 26, 2007 9:25 am
Posts: 5
Location: Roskilde, Denmark
Hi again out there :-)
As far as I could find in my physics book the heating of a copper wire with known weight from its diameter and length, a known applied power and time will be: dT = (P*t)/(m*c) and T1 = T0 + dT
Example:
P=1W, t=3600s (60min), m=1kg, T0=25 degC and c=387 J/(Kg*K) gives
dT = 9.3 and T1=34.3 degC.
Fine, but what if one has to account for the heat conductance and heat radiation from the wire (natural air cooling) - then what will the final temperature be in degrees Celcius?

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Best regards and
Vy 73 de OZ7ACS aka JPH


 
   
 
 Post subject:
Posted: Wed Aug 01, 2007 5:07 am 
 
General
User avatar

Joined: Fri Feb 17, 2006 12:07 pm
Posts: 236
Location: London UK
Hi jph
One site I found has a lot of physics thermal on-line calculators run in java, one of which might help you.
The site is www.martindalecenter.com
http://www.martindalecenter.com

73
G3OAD






Posted  11/12/2012
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