Now that the dome is soon closed off for good, I've started to look into inner/outer arch flue and that part of the build. I really like what JRPizza and Sharkey did which is this 's-shaped' flue design/serpentine and will probably try to see if I can emulate based on those builds. But I am not yet confident on the dimensions of the flue area.
My oven dome is around 32". For that I've read between 32-26" size that a 6" flue will work. Then I've also read that a flue exit into the chimney should be around 50 square inches. So that would mean I need to anticipate a 6" deep/8" wide end point of the serpentine, at least that would get me to 48 square inches, and just about enough. I haven't decided if a double wallet chimney is necessary or I can use single SS chimney. My father in law has single wall SS chimney lying around which I am welcome to use, but I am thinking that single walled carries a risk of cracking the chimney base due to heat expansion?
Another issue I need to figure out is the depth of the flue/entry area. Since my dome will be about 32", would it be enough if I used 4/3 firebrick? I would use 1/3rd as link to the inner arch with fire rope and refractory sealer cutting notches into the brick and placing those on top of the inner arch it like JRPizza did. If I did that, then it would give me 2/3rd bricks as middle area of the flue arch (about the planned 6 inches) to move upwards and turn into serpentine, and then a last 3rd - about 3 inches for the outer arch ring. Does this make sense, and would this be deep enough and strong enough to accommodate the chimney? Especially, would a 3 inch brick arch be strong enough? I can't see from the photos how large the brick pieces others have used were.
I may post this in another subforum as well since I'm not generating much traffic in here.
My oven dome is around 32". For that I've read between 32-26" size that a 6" flue will work. Then I've also read that a flue exit into the chimney should be around 50 square inches. So that would mean I need to anticipate a 6" deep/8" wide end point of the serpentine, at least that would get me to 48 square inches, and just about enough. I haven't decided if a double wallet chimney is necessary or I can use single SS chimney. My father in law has single wall SS chimney lying around which I am welcome to use, but I am thinking that single walled carries a risk of cracking the chimney base due to heat expansion?
Another issue I need to figure out is the depth of the flue/entry area. Since my dome will be about 32", would it be enough if I used 4/3 firebrick? I would use 1/3rd as link to the inner arch with fire rope and refractory sealer cutting notches into the brick and placing those on top of the inner arch it like JRPizza did. If I did that, then it would give me 2/3rd bricks as middle area of the flue arch (about the planned 6 inches) to move upwards and turn into serpentine, and then a last 3rd - about 3 inches for the outer arch ring. Does this make sense, and would this be deep enough and strong enough to accommodate the chimney? Especially, would a 3 inch brick arch be strong enough? I can't see from the photos how large the brick pieces others have used were.
I may post this in another subforum as well since I'm not generating much traffic in here.
Comment