Why is my AETN overheating

[Craigjw]

Both arguments are true for capacity and conductivity, however, if you want the gas to cool at any decent rate, you need to use High conductivity pipes, preferably surrounded by a High Capacity medium.

[trukogre]

1 hour ago, Craigjw said:

Both arguments are true for capacity and conductivity, however, if you want the gas to cool at any decent rate, you need to use High conductivity pipes, preferably surrounded by a High Capacity medium.

or you could avoid using pipes as a conductor.  if you look at the really high output designs for things like polluted water boilers, etc, that's the trick to them.