Here's a couple pics as an example of the spaces between bricks to allow airflow-
Tom OHern wrote:The general advice here is that the system needs something to radiate the heat out quickly to make the system function. When you cover the barrel in cob, the top of the riser becomes the same temperature as the bottom, and you loose the chimney effect, and you end up getting smoke coming back out of the burn chamber.
See that was what I was some of my concerns.
I do like the idea of creating a screen with some of the metals that were shown in one of the above links. I am curious about the bricks since that would allow air flow and when they get warm they would also radiate heat for a bit perhaps. I am also trying to design my home with proper chi and unfortunately metal is something that I need to avoid seeing a lot of so that is why I was curious. I like the way it looks with the tile but general worry of air draft and instant gratification with my system is still there.
Thanks guys! If anyone else stumbles upon this please share! I am always checking out new ideas....and I love photos!
thomas rubino wrote:Hi Alisha; Check out mine, mostly covered by cobb with a row of 2" tiles for color. Instant heat gratification is still 100%
Do you have any issues with lack of suction through chimney?
Hi Alisha; Check out mine, mostly covered by cobb with a row of 2" tiles for color. Instant heat gratification is still 100%
No not at all, I do have 1/4 barrel exposed. If I had covered it completely I would have expected the loss of my heat pump. I also have a tall chimney all inside after my mass , that creates its own draw as well.
A squirrel cage fan attached to a deep cell 12 volt battery and solar panel can also be a very effective "cure" for a design that is not achieve good draw...especially when first started. Not my first choice, yet I do place these fans in many of my past designs just to augment combustion and draw should I need it.
It looks like in Thomas's case, he has achieve good draw by exposing only the required amount of mental and having a taller chimney.