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Chimney height and diameter - Forno Bravo Forum: The Wood-Fired Oven Community

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I'm Peter Reinhart! Ask Me Anything! Monday, February 15, 2016 7:00-8:00 pm EST

To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

Ask Me Anything New Forum Feature

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
- Another thread will be posted for the live AMA. Registered users who are logged in during the live session can interact with the host by asking questions and receiving responses.
- The live thread will remain in the AMA forum to view after the session.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

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Chimney height and diameter

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  • Chimney height and diameter

    I know I have seen the answers to these questions somewhere, but I have been searching the forums for the last 45min and can't find them. My oven is 32" in diameter with a 16" dome height. The opening is 15" wide by 10" high.

    I will use some sort of metal chimney, but I am wondering what dimensions I need... inside diameter and height.

    As usual, I appreciate all the input.

    Chris

  • #2
    Re: Chimney height and diameter

    I'd be using at least a 6" diam. stainless steel flue for an oven that size. One length should be sufficient, they usually come in lengths of around 900 mm. The stainless is more expensive, but you won't have to be replacing it in a couple of years time, like you would if you use galvanized steel.
    Kindled with zeal and fired with passion.

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    • #3
      Re: Chimney height and diameter

      Galvanized is also bad around food. Someone with more knowledge on the matter can extrapolate but basically the zinc contaminates the food?

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      • #4
        Re: Chimney height and diameter

        I think the flue is far enough away from the food to be a problem. It is the accelerated corrosion that's the main one. Don't use anything galvanized, like door bolts in the oven chamber though.
        Kindled with zeal and fired with passion.

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        • #5
          Re: Chimney height and diameter

          So 36" for the height is the right?

          I would not use galvanized for this application. The galvanization melts at around 900deg making it not a great material for an oven that gets this hot. As to the fumes, when the zinc vapor mixes with oxygen it creates zinc oxide. Zinc oxide will make you feel like you have the flu if you inhale too much of it, but it is non-toxic and a non carcinogenic... so in case someone used galvanized, you don't need to tear apart your oven.

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