I have a garage that is divided in two with a wall. I want to build a 6" Rocket Heater (no mass, just the heater)
that has the burn chamber on one side of the wall and a 100 lb propane tank radiator on the other side of the wall.
I want to keep open flames out of heated side of garage as some times I spray paint in there...
The J tube burn chamber would need to be pretty long, say 24" between back of fuel area and front edge of riser tube.
That means the total bottom edge of J tube is 36" long from the front of fuel area to the back of riser.
I would of course have fire bricks insulating it where it goes thru the wall.
I plan to make a wood pellet dispenser system to use on it.
How long is too long for a burn chamber?
Diego Footer on Permaculture Based Homesteads - from the Eat Your Dirt Summit