Bacon Lee wrote:
Erik: When I did the wall of brick around the rocket heater, I have that wall 1/8 away from the wall. Because I was thinking when I have to break down the rocket heater and sell the house, the house is ok on it's own. Now, should I slide a metal sheet into that slot to protect the wall? Would that be good?
Erik Weaver wrote:...
It also leads me to wonder if there is a useful rule of thumb here? My tests have been with a nominal 6" system. And I am seeing temperature extremes ranging up to 600 F. This is basically what I have measured at the bottom-rear of the fire riser, below the coals, and at the top of the barrel (all outer face temperatures; interior temperatures are obviously higher). So I wonder, would one expect to see these areas rising to about 800 F in an 8-inch system, and only 450 F or so in a 4.5" system? Is the rate of change from one system size more linear or geometric??