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Re: flue size, chimney - wood burning oven
From the WFO board
Posted by Rado on February 01, 2004 at 16:49:14:
In Reply to: flue size posted by Taz on January 27, 2004 at 14:14:41:
for an oven with 1m diameter I make the flue hole 15cm x 15cm and about 15cm above the hearth floor level (15cm above the floor makes it after 2nd layer of bricks when I use 230x115x75mm fire bricks).
I would do the same for 24" size oven. You can then after testing with the fire always cut a small piece of brick and just place it in to the flue opening to block it a bit which means to change the size to a smaller. Chimney size can be from 11cm to 15cm square, and you may experiment with the length of it to achieve a good draught from the chamber, if not tall enough add more bricks on top to make the chimney longer.
I make the flue opening just at the back of the dome chamber, right opposite of the entry to the oven. The chimney can start rising from the point when the flue hole comes out on the outside, and it should be stable of course.
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