Burak Unver wrote:Hello, I want to build a rocket mass heater at my workplace. I have a steel 28" diameter (1/2 inch thick) steel pipe and I want to use it as a drum.
I have been searching for what should be the dimensions of the system, but couldn't find a ratio.
I attached an section image of the important dimensions.
I'm waiting for your advices..
Thanks..
The height of the heat riser must be three times (at least) the height of the
feed tube where you load the
wood.
The height of the heat riser must be two times (at least) the length of the burn tunnel .
So if the height of the heat riser is 48 inches ,the height of the feed tube can not be more than 16inches and the length of the burn tunnel
cannot be more than 24 inches.
The gap from the top of the heat riser to the barrel rim is 5 cm/2 inches.
The length of the feed tube opening and the heat riser opening should be the same as the height of the burn tunnel(the two courses of brick that you stack for the burn tunnel's height).
It would be good to purchase the
Rocket Mass Heater Builder's Guide.
Regarding the gap of the manifold i would like to hear it from someone else in the forum.Are you going to use a 6 inch or an 8 inch system?