15mm copper cooling coil

[gt6s]

Compressor cooling coil off a truck.

 

[julianf]

If 10mm won't give too great a restriction, you can just buy 10mm and it will come coiled.

I believe that EN 1057 is rated to 10bar - again the coils out of scrap water tanks probably won't be.

I think it's madness, but, if that's the way you want to do it, that seems like the simplest option.

If 10mm is too small bore you could run a few in parallel. You even get central heating bosses that bring multiple 10mm pipes to one larger bore, but I'm not sure of the pressure rating of them (central heating isn't normally 10 bar either!)

 

[julianf]

Now i have a use for this
View attachment 353165

I reckon you've polished that! : )

 

[Olderisbetter]

I reckon you've polished that! : )

It came out of a combi tank that was never used

 

[Farside]

Here's mine. I'd made two coils originally to heat /melt barrels of lard when I was doing biodiesel, and re-purposed them a couple of years ago.

 

[cheb]

Nice. I never had the joy of dealing with lard when I made bio, the worst I had was semi-solid.

This is all moot now anyway, since I looked at the price of a coil of copper :tightwad: