Heating a Copper Tube via Nichrome

[electricman26]

Good afternoon,

I wanted to heat up a .5" copper tube that is approximately 15cm long up to about 250 C. I would like to use nichrome to do this, but I know that I will have to use an insulator of some type between the nichrome and the copper tubing. Would JB Weld work? If I lathered the copper tube with JB Weld high heat epoxy, and then wrapped the nichrome after it dries, would the heat transfer correctly?

 

[pc1966]

250C is a lot for epoxy, and the heating wire is likely to be a bit higher still. Can you share more info about the how & why of doing this?

 

[electricman26]

The JB Weld can withstand up to 500C according to the box. There's a high temperature heating fluid inside the copper tubing that I am trying to heat up to about `200C, accounting for some heat loss, I'm trying to get the wire up to 250C. I just want to know if JB Weld has any conductive material so that the wire can heat up properly.

 

[James]

I think trial and error is the only way forward here.

 

[freddo]

How about wrapping the pipe with mica-paper tape then winding the element onto that?