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  #11  
Old 07-01-2014, 02:46 AM
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Join Date: Feb 2014
Location: New Zealand
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Default Re: Smoke Abatement Solution

Really interesting solution. I think you are onto something with this and the issues raised about water residue can be managed if the chimney is one with a right angle at the top. Mist is not going to run down the chimney and any runoff is right at the end and can be quarantined easily. Lots of options.

Really interested whether you did any more tests with this? Your estimate of less than 10% of the smoke sounds very promising. Smoke is a real problem in residential areas and this solution is very cheap to implement. I have been considering afterburners/catalytic converters, but this solution is not going to require any additional fuel or replacement parts.

Thanks for posting, interested in your subsequent results.
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  #12  
Old 08-11-2014, 04:57 AM
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Join Date: Nov 2011
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Default Re: Smoke Abatement Solution

Quote:
Originally Posted by V-wiz View Post
FYI here is the draft door i built. Its very easy, and comes in use every time i fire the oven, whether its at the first start up or after the flames have settled down.
I was planning to consider something similar to your draft door for my indoor oven that I like to call: "smoke sentinel", it comes with a bigger air gap underneath. The major difference from your idea is that I see placing it before the vent (looking inward) will allow the oven to breath from the bottom of the door and the exhaust smoke will be channeled by the upper part of the door and forced to be driven inside the chimney.
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  #13  
Old 08-11-2014, 08:59 AM
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Default Re: Smoke Abatement Solution

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Originally Posted by knormie View Post
My neighbor complained about the smoke from my WFO. I probably would have done the same in his shoes.
that's an interesting idea. Never thought of that effect a nozzle can do! Interested to know the mechanics of nozzle effect on depressing smoke.
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  #14  
Old 09-27-2014, 01:23 PM
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Join Date: Oct 2010
Location: San Diego
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Default Re: Smoke Abatement Solution

An update:
After many firings, this solution is still working. The only thing I have to add is that the mister has such a fine hole that can be clogged and prevent the spray from atomizing. You can install an inline filter if you like or just unscrew the mister and blast it with a water-pik like I did. My neighbor has not complained since and my oven days are now stress free. Best of luck to you all.
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  #15  
Old 09-27-2014, 06:39 PM
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Location: Townsville, Nth Queensland,Australia
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Default Re: Smoke Abatement Solution

Hi knormie,
I really like your idea and would also like to make one of these.
A couple of questions
1. What size diam flue do you have?
2. Where is the nozzle fitted to the flue pipe?
3. Is the nozzle angled down or aimed horizontally?
4. Does it run on mains water pressure or do you turn this down?
5. How much mess is collected at the bottom of the flue, assuming the smoke particles have to end up somewhere?
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  #16  
Old 09-28-2014, 08:01 AM
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Join Date: Oct 2010
Location: San Diego
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Default Re: Smoke Abatement Solution

Quote:
Originally Posted by david s View Post
Hi knormie,
I really like your idea and would also like to make one of these.
A couple of questions
1. What size diam flue do you have?
2. Where is the nozzle fitted to the flue pipe?
3. Is the nozzle angled down or aimed horizontally?
4. Does it run on mains water pressure or do you turn this down?
5. How much mess is collected at the bottom of the flue, assuming the smoke particles have to end up somewhere?
Flue is 8" stainless steel.
The nozzle is hooked over the top of the chimney and directed downward. It is not affixed which is good since I discovered it may need periodic cleaning.
The water is supplied via garden hose at normal household pressure.
Any droplets that make it to the bottom are collected in a metal pie pan. Not much ends up there.
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