I have been over and over this and I need some help.(adsbygoogle = window.adsbygoogle || []).push({});

I have a copper wire (.0019 inch diameter) running in a wire preheater. I heat the wire at 24 volts AC, 800Hz and pull 192 amps. The wire is approximately 1 meter in length and is moving at 2500 ft/sec. The ambient temp. is 73 deg. F.

What is the temperature of the wire?

I know the "black body radiation law" applies here but this is what I am after;

What is an approximating equation I can use to determine the wire temp if I know the following:

Diameter of the wire

Voltage applied

Current measured

Frequency of the source voltage

Emissity of the copper

Wire speed

Wire length 1 meter

Ambient temperature

I am collecting all of the above in a PLC application and want to approximate the exiting wire temp. What about just in a steady-state condition?

I know, this is pretty long hair, but I know there are real engineers/ physics majors that know the laws of thermodynamics and might be able to give me some direction.

thank you

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# Thermodynamics of wire calculation

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