#1  
Old 06-19-2009, 01:54 PM
Serf
 
Join Date: Feb 2009
Location: Eugene
Posts: 6
Default Chimney Question

Hi everybody,
I am building the Pompeii oven (I think) and am trying to get the chimney/vent right. My interior oven dimmension is 36". Door is 19" wide and 12" tall. My chimney opening I have created in the entrance arch is 10" by 6" square. The question I have I guess is; Do I need to "flare" the base of the chimney (so it constricts on the way up)?. Also, what height should I be shooting for in order to ensure I get good draw. Lastley, does my flue liner need to continue to the top of my chimney stack or can I switch to regular brick at the top.

I found one 10" by 6" liner that is about 12" tall. I was planning on building a base from fire bricks with high temp mortar on top of my entrance arch to create a flat location for the liner to rest. Then after setting my liner on the new "shelf" I plan to wrap it with ceramic blanket. Then I was going to continue to enclose the flue/ceramic blanket with ornamental red brick splits to hide the ceramic blanket, thus giving the flue room to expand and contract as needed within the structure without popping off the pretty bricks. Is this standard operating procedure?

Any help or advice would be greatly appreciated. Thanks All!
Reply With Quote
  #2  
Old 06-19-2009, 02:50 PM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Re: Chimney Question

Quote:
Do I need to "flare" the base of the chimney (so it constricts on the way up)?
I think the best practice is to have an opening in your entry about twice the area of the flue opening. Having no transition is a potential problem of smoke coming out. My smoke funnel may be a bit excessive: with a two story chimney it could probably contract at the bottom and still draw fine.
__________________
My geodesic oven project:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
,
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
chimney question builder brad Design Styles, Chimneys and Finish 4 08-22-2008 12:36 AM
Chimney block question dmun Design Styles, Chimneys and Finish 3 08-11-2007 05:17 PM
Question about oven opening and chimney rwiggim Pompeii Oven Construction 6 08-09-2007 12:16 PM
Chimney / Flue Question.. johnrbek Pompeii Oven Construction 1 02-20-2007 03:07 PM
Construction of Chimney question dmun Design Styles, Chimneys and Finish 0 07-18-2005 08:08 AM


All times are GMT -7. The time now is 01:23 PM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC