I just drew it square, haven't built it yet. I assumed that I'll end up using a square stack simply because we have a bunch of square tubing laying around the yard here. I've asked the question before and was told that a round stack is more efficient, IE a 4x4 square tube is the equivalent of a 4" diameter tube even though the square tube has more volume. (Someone please correct me if I'm remembering this incorrectly)10pinto wrote:Is there a reason that you have a square stack, just got me thinking is a round stack better than square ?
Kcd, I seem to be remembering being told something similar. I think it has to do with the way air flows in a circular motion. In a square stack, the air gets slowed down in the corners and creates turbulence so the volume of air exiting the top of the stack is roughly the same as that of a round stack.Kcd2016 wrote:I just drew it square, haven't built it yet. I assumed that I'll end up using a square stack simply because we have a bunch of square tubing laying around the yard here. I've asked the question before and was told that a round stack is more efficient, IE a 4x4 square tube is the equivalent of a 4" diameter tube even though the square tube has more volume. (Someone please correct me if I'm remembering this incorrectly)10pinto wrote:Is there a reason that you have a square stack, just got me thinking is a round stack better than square ?
If there are other reasons I should run a round stack someone please let me know!