i just had alighting storm in my head
i have a center of the house brick chimney with a smooth wall 316 liner, total vert. height is 23Ft. from the top of the stove collar.
there is also 2, 90* elbows AND a clean out "T" in there and i seem to remember that 90's where considered to be equal to 10Ft. of straight pipe.
does that mean that my chimney is 53Ft. functionally ? if so i think i'll go to 2, 45's and cut 10Ft. off of it.
or i'm crazy and will just be spinning my wheels.
any way, if this is true, could a guy add a couple 90's to his stove pipe gaining functional height and draft ?