Due to friction loss when using a rectangular stack, this will calculate the equivalent size of a round stack with the same airflow.Volume of the round pipe (π x Radius squared x height) divided by the area (length x width) of the square tubing.
Thank you sir! I'll probably put a rain cap of some kind on the top of the stack, but I'd prefer not to mess with a true damper if it's not necessary.Barrion2018 wrote: ↑October 17th, 2022, 9:37 pmI'm still new at this, so take what I say with a grain of salt.
I made a RF a couple months ago and made the stack taller than what the calculator said it should be. I also put a damper on it. It works great.
Like I said I'm still new at this, but if it were me, I would go taller than 16" above the CC.
Your build looks great, can't wait to see it when you're done!
Pete Mazz wrote: ↑October 18th, 2022, 2:37 amDue to friction loss when using a rectangular stack, this will calculate the equivalent size of a round stack with the same airflow.Volume of the round pipe (π x Radius squared x height) divided by the area (length x width) of the square tubing.
Screenshot 2022-10-18 at 03-34-32 Online calculator Square Stack Calculator.png
Dirtytires wrote: ↑October 18th, 2022, 11:20 amNo need to make it longer than the calculator calls for. It just adds needless top-heavy weight and looks goofy. It can also affect the operation of your pit as proper combustion and airflow depends heavily on the proper sized stack. As mentioned, you could make it longer and add a damper but that just seems like a lot of work just to get back to where you would be with a proper length stack in the first place.
Dirtytires wrote: ↑November 10th, 2022, 9:58 amKeep at it....looks really good!