Joost Meijers wrote:okay, after thinking some more about it I thought that the temperature of the fire would indeed be to low.
So I'm thinking about lining the lower quarter of the barrel with thermal mass on the inside, this way I would get a high temperature at the fire and still conduct the heat to the water.
another idea I had was to put a stainless steel/copper coil on the inside of the barrel (starting low and going up) I hope I'll use more of the energy of the fire this way.
Let me know what you guys think