new air tank for reverse flow
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been working on my calculations and this is what I have. hope I'm on the right track.
110 gal tank
cc vol 25410
firebox 8470 at 103.9%
inlets rd 2 26.40
chim 4 in
fb to cc 70.40
sediment height 5.10
lets try this again:
fb vol 8470 at 21x21x21 109%
fb air inlets 2541 ( 2) 5 x3 in 27.78
fb to cc 101.64 cubic in
area under cook plate101.64 cubic in
thanks dave for your feed back.im obviously not calculating volume of
this tank right.is there a link that shows how this is done.this may be my first build but it wont be my last.thanks
Now use my calculator......
25410 x 1/3 = 8470 cu. in. FB size or larger... larger recommended...
25410 x 0.017 = 432 cu. in. stack volume...... / 0.7854 x 16 (Dia. stack squared 4x4=16) = 34" tall stack x 4" I.D.
25410 x 0.001 = 25.4 sq. in. area FB air inlets... I would use 6 sq. in. (3x2) across from the FB/CC opening for the heat mover... and 20 sq. in. (3x2.25) at or below the Fire Grate for adjusting the heat output of the fire.... or something similar.....
25410 x 0.004 = 101.64 sq. in. FB/CC opening and area under the RF Plate....
Click on this calculator to open.....
... click on pic to enlarge ...
chord AB is the width of the RF plate
segment area (104 sq. in.) is the area of the FB/CC opening AND the area under the RF plate if it is 21.5" wide and 6.75" above the bottom of the CC... matching up to the opening on the FB...
Leave at least 7" at the end of the RF plate for the heat/smoke to make a 180 degree turn and head back to the exhaust stack.....
I think that covers everything.... let me know.... I'll be around..... Dave
Smoker parts have many configurations.... here are a couple.... click on any pic to enlarge ...
Grinders won't get the oils out of the porosity of the steel... You don't need to get the rust out... It isn't hurting anything.... A coating of vegetable spray or a few cooks of pork butts will help season the inside... After several smokes, the inside will be coated with volatiles from the wood... but the Mercaptans will live forever....