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chimney area = ???% times oven chamber area - Forno Bravo Forum: The Wood-Fired Oven Community

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New Forno Bravo Forum Feature

Forno Bravo Forum Community,

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.

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.

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 area = ???% times oven chamber area

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  • chimney area = ???% times oven chamber area

    Hi all,

    I'm sure this has been posted but i couldnt bring up direct hits.

    What chimney area % compared to oven chamber entry is everyone having success with?. Also is width (and/or depth) of the chimney a decisive factor?

    Can you use normal bricks for a chimney or are firebricks or flue mandatory?

    Thankssssssssssssssssss~~~~~

    Gummz
    Last edited by gummz; 11-29-2011, 01:24 AM. Reason: flue

  • #2
    Re: chimney area = ???% times oven chamber area

    To be honest im not sure most poeple calculate to a specific %. But moreso based on the oven size.. Most guys with a 42inch oven aim for an 8inch flue whilst the 32inch normally a 6inch flue.

    I basically worked backwards, I have a 36inch oven with an 8inch flue and had a spigot made up.. then buld up my arch like an upside down funnel for the best draw possible.

    Loook at build threads like Ken or Karangidude for some examples..

    You can use most materials for a flue, I opted for stainless steel because i love the look. You can use normal bricks and get away with it.. hell my whole oven is normal bricks..

    Goodluck!

    If you get desperate, take a look at mine http://hiddingpizzaoven.blogspot.com/
    Havent updated in months :P but shows my front arch and how i mounted the chimney! (shoulda had more pics but was too busy).
    Last edited by chidding; 11-29-2011, 01:37 AM.

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    • #3
      Re: chimney area = ???% times oven chamber area

      Originally posted by gummz View Post
      What chimney area % compared to oven chamber entry is everyone having success with?. Also is width (and/or depth) of the chimney a decisive factor?
      Aim for a flue that is more than 10% of the opening size.
      Chamber size wouldnt come into it, its the oven opening size that counts.

      Originally posted by gummz View Post
      Can you use normal bricks for a chimney or are firebricks or flue mandatory?
      Normal bricks are fine.
      The English language was invented by people who couldnt spell.

      My Build.

      Books.

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      • #4
        Re: chimney area = ???% times oven chamber area

        This topic was discussed on a recent thread (do a search) and the consensus was that 10% was way too small for a WFO. It needs to be more like 20% IMO
        The 10% rule relates to fireplaces which have a much larger opening.
        Kindled with zeal and fired with passion.

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