web analytics
Heat loss thru substucture - Forno Bravo Forum: The Wood-Fired Oven Community

Announcement

Collapse

Photo Galleries are back! Instructions below.

Dear forum users,
Thank you for your patience with the Photo galleries. We've got your galleries online!
We have finished writing a custom script to migrate the PhotoPlog to vBulletin5’s albums.

Unfortunately V-Bulletin killed the "Photoplogs" in their software upgrade which was unforeseen and we're the first development group to have written a script for getting the galleries back... that said, it took some time to reverse engineer the code and get the albums to move over seamlessly!

Forum users will be able to access their “PhotoPlog” images through their user profile page by clicking on the “Media” tab.
They will also be able to browse other albums by going to the albums page. (On the forum site, there is a link in the black bar beside “Forums” to the albums.)

In order for users to create an album please follow the steps below.
1) Go to user profile page and click “Media”
2) Click Add Photos
3) Enter Photo Gallery Title in the first field
4) Click Upload or Select from Photo Album to add photos
5) Click Post
6) Once posted, the album will be created as a “Topic” on the albums page for the public to see. The topic title will be the “Photo Gallery Title” they created before uploading their photos.


To create this migration path we used vBulletin5’s default album structure. Unfortunately, it won’t work like the “PhotoPlog” but is an album/gallery component on the forum now.
See more
See less

Heat loss thru substucture

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Heat loss thru substucture

    Hi,

    Wondering if my oven losses heat thru substructure? If I feel the roof of the wood storage onder the oven it is warm after a few hours of burning. I have about 6 inches of insulation (portland+verm), thin layer of fireclay and then the fishpattern of full firebicks for floor. Anybody else notice this with their oven?

    I have no door yet so not sure long it would stay warm with a door. Next morning after firing its warm in the oven but not crazy hot, probrably 80 -120 celcius.

    Thanks for your input!

  • #2
    Re: Heat loss thru substucture

    After a long fire with pizza temps in the 850f range my wood bin ceiling will be about 110f with a temp of 50f for the air.

    I have 2.5" 7-1 vermicrete with 2" FB board. My slab is 4 inches of concrete.

    Yes, I do wish I had more insulation under my oven floor.

    Right now my oven is 420 inside, 2 days after fire, after baking bread yesterday, and the outside temp is 32f the ceiling of the wood bin is 75f.

    I do have a 4" thick insulated door and the Oven will still be over 200f after 5 days with outside temps averaging 35f.

    One other thing, if your oven is still new you may have water in your floor insulation that has not burned out yet. Give it time and more fires and it will dry out. ( I just looked at your postings and see that your oven has been complete for some time is it possible that water is getting into the floor insulation?)

    Build a nice door and heat loss will go down lots. My door is described in my Chips 42 in Minnesota posting.

    Chip
    Last edited by mrchipster; 05-10-2013, 06:51 AM.
    Chip

    Comment


    • #3
      Re: Heat loss thru substucture

      Your hearth base sounds much like mine - an Alan Scott barrel vault base. Without the insulation boards as FB encourages your hearth will leak much faster. It is not a big problem unless you want to braise or roast meat the second day. You will likely experience that pizzas will cool your hearth and you will want to rake coals out to recharge the hearth every half hour or 45 minutes - or keep a larger than normal fire. Irritating but not unusual nor a real problem - just takes attention.

      The reason your oven is cold the next day now is not the hearth - it is the lack of a door. My oven is around 375 the morning after pizza.

      Jay

      Comment


      • #4
        Re: Heat loss thru substucture

        And if you dont have a door in the meantime you can cover the entrance with bricks. This is a temporary bandage till you make the door.
        Matthew 19:26. With God all things are possible.

        My Build: http://www.fornobravo.com/forum/f21/...les-18741.html

        Comment


        • #5
          Re: Heat loss thru substucture

          Thanks Jay and Chip,

          Jay what you described about raking coals back over is what we have found out as well, human nature I guess! Great minds think alike wish only I had better insulated the floor. Will try a temp door to see how that goes, planning to fabricate something permanent soon.

          Haven't been on here for years will have to update my photo and build information. Oven is almost done after 5 years!!! Work in progress kind of thing...

          Best regards,

          Kurt
          Last edited by plootsnot; 05-10-2013, 08:58 AM.

          Comment

          Working...
          X