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Pizza Pizza 09-06-2009 12:25 PM

smoke temp at chimney exit
 
Can someone tell me how hot the smoke is coming out of a 36" chimney at the hottest time of fire building? We have a telephone line 48" directly above where we want to put our proposed chimney exit using a 36" tall chimney pipe:(.

Thanks

Rodneyf 09-10-2009 06:09 AM

Re: smoke temp at chimney exit
 
Move the phone line!

Ken524 09-10-2009 06:24 AM

Re: smoke temp at chimney exit
 
Quote:

Originally Posted by Pizza Pizza (Post 63769)
Can someone tell me how hot the smoke is coming out of a 36" chimney at the hottest time of fire building?

It's gotta be well in excess of a 1000F.

arevalo53anos 09-10-2009 07:17 AM

Re: smoke temp at chimney exit
 
I had measured 1200 C degrees (+2000 F) at the entry of the chimney on fire running.
Move the fone line or use a cone or mushroom top on the chimney.
Burning ashes must be considered, too.

Luis

Pizza Pizza 09-10-2009 07:48 AM

Re: smoke temp at chimney exit
 
Wow, I'm surprised. I almost didn't ask the question. I would have thought the temperature would have dissipated more by then (48" from the exit of a 36" chimney). Yes, I am going to use some sort of spark arrester/cone anyway. I have an alternate location I can put the oven in. I will do that. Moving the phone line would be a hassle,... it's the neighbors phone line (living in the city sucks). Thanks for your input.

Fred

DrakeRemoray 09-10-2009 07:52 AM

Re: smoke temp at chimney exit
 
Oh, if it is the neighbor's phone line...I think it will be just fine :)

hulkiebear 09-25-2009 05:06 PM

Re: smoke temp at chimney exit
 
I measured 120C at base of chimney(using laser non touch thermometer) and no more than 80 at the top(4 foot). Internal temp of oven was 500c ish.

Not too sure how acurate this thermometer is, but soo o inside of oven had burnt off, meaning the oven was well over 400c. Also, chimney was 8" which may effect things.

david s 09-25-2009 08:09 PM

Re: smoke temp at chimney exit
 
120 C sounds more accurate to me. I think someone slipped a decimal point.

dmun 09-25-2009 08:37 PM

Re: smoke temp at chimney exit
 
Quote:

I had measured 1200 C degrees (+2000 F) at the entry of the chimney on fire running.
Your chimney tile would be glowing bright red at that temperature. That's cone 6 in ceramics, just short of stoneware temperatures.

http://www.bigceramicstore.com/Infor...oneExample.jpg

Time to re-calibrate that instrument.


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