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The Science of Blue Smoke

 
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Cal-B-Que
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PostPosted: Tue Mar 06 07 7:38 am    Post subject: The Science of Blue Smoke Reply with quote

OK - scientists, propellor-heads, smokefessionals, etc...

Can someone enlighten me on what properties of fuel, combustion, etc... create that perfect blue hued smoke chamber exhaust? (as opposed to white billowy smoke)
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Alien BBQ
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Joined: 12 Jul 2005
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Location: Roswell, New Mexico

PostPosted: Tue Mar 06 07 7:45 am    Post subject: Reply with quote

Start with this….
http://www.thesmokering.com/forum/viewtopic.php?t=3774&highlight=things+talk
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Cal-B-Que
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PostPosted: Tue Mar 06 07 8:10 am    Post subject: Reply with quote

Already been there; but thanks. I am ususaly getting blue smoke when I Que; I was just wondering what (scientifically) creates the blue smoke, as opposed to white.
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Alien BBQ
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PostPosted: Tue Mar 06 07 8:22 am    Post subject: Reply with quote

The yellow smoked is caused by unburned solids and gasses. Too much wood or too low (hot) of a fire will ruin the meat. This is why a smaller hot fire is better than a big ole hogin fire that can not keep up with amount of wood that is being fed into it. Toss in wet wood or green wood and again the temperature of the fire can drop below the optimal combustion zone. The thin blue smoke is produced by better burning of the wood and byproducts.
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allsmokenofire
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PostPosted: Tue Mar 06 07 9:22 am    Post subject: Reply with quote

Cal-B-Que wrote:
Already been there; but thanks. I am ususaly getting blue smoke when I Que; I was just wondering what (scientifically) creates the blue smoke, as opposed to white.


Here's an abridged version..I'm sure someone will be more than happy to correct me if I'm wrong. Wink

Colors of light, which produce what we see, have various wavelengths. The shortest of these lean towards the blue colors. When you have a hot clean burning fire, the particulate is very small and doesn't really reflect any lightwaves, but kinda deflects or scatters the shorter blue wavelengths. The longer wavelengths pass right through. This results in the light bluish hue you see.

When a fire is not burning clean, the smoke particles are larger, large enough to pick up other materials like water droplets, etc.,which make them even larger. These larger particles reflect all wavelengths of light equally, which gives them the white appearance.

I could be mistaken here, but I used to be a big Mr. Wizard fan so this is how I remember it. Cool
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zilla
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PostPosted: Tue Mar 06 07 9:27 am    Post subject: Reply with quote

Now that was a refreshingly different explanation. Thanks. Smile
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Cal-B-Que
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PostPosted: Wed Mar 14 07 1:06 pm    Post subject: Reply with quote

Yep, that's the kind of explanation I was looking for; thanks for the info.

Mr Wizard, huh? Is that the guy who would tell Tooter Turtle: "Drizzle, drazzle, druzzle, drome, time for zis one to come home"?
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allsmokenofire
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PostPosted: Wed Mar 14 07 7:58 pm    Post subject: Reply with quote

Cal-B-Que wrote:
Yep, that's the kind of explanation I was looking for; thanks for the info.

Mr Wizard, huh? Is that the guy who would tell Tooter Turtle: "Drizzle, drazzle, druzzle, drome, time for zis one to come home"?


No....this Mr. Wizard. Used to dig his tv show in the early 70's as a kid.


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adolpho
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PostPosted: Wed Mar 14 07 11:13 pm    Post subject: Reply with quote

Mr. Wizard, yes one of the original Nickelodeon TV shows from way back when.
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Tony
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PostPosted: Fri Mar 16 07 7:40 am    Post subject: Reply with quote

Well...

Tell Ya'll what:

Mr. Wizard originally appeared on Network Television(cause that's ALL we had! Laughing ) back in 1951.

The name of the show was "Watch Mr. Wizard",and He created
experiments using commonly found items around the house.

His real name was Don Herbert and he was born in 1917.

The Show ran on -and -off through 1972.

I watched "Mr. Wizard" every chance I had the oportunity,and THAT wasn't very often at all!

My old man bought this used 10" "Fada" t.v.,and the only time I was able
to watch it was when He said we could.Of course,if the old man wasn't around,We would be able to catch the 15 minute episode of...

"Watch Mr. Wizard" Wink

Best Regards, Tony Very Happy
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drunkmunk



Joined: 15 Dec 2006
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Location: Augusta, Georgia

PostPosted: Sat Mar 17 07 11:30 pm    Post subject: Reply with quote

In regards to the color of smoke questions that come on here I haven't read many people asking about "little to no visible" smoke. this is what i usually I have once everything stabilizes. does anyone else get this? I usually use lump with a log of pecan or hickory in my snp pro.
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allsmokenofire
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PostPosted: Sat Mar 17 07 11:37 pm    Post subject: Reply with quote

drunkmunk wrote:
In regards to the color of smoke questions that come on here I haven't read many people asking about "little to no visible" smoke. this is what i usually I have once everything stabilizes. does anyone else get this? I usually use lump with a log of pecan or hickory in my snp pro.


This is from my smoke session on Thursday, burning oak and pecan logs.


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Mike
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Alien BBQ
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PostPosted: Sun Mar 18 07 6:01 am    Post subject: Reply with quote

Too much smoke (left) Thin blue smoke (right).


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Tony
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PostPosted: Mon Mar 19 07 7:31 am    Post subject: Reply with quote

Yup...

Just what "Allsmokenofire" said,"Little to No Smoke at all.", as depicted
in His last Post...Also with pics! Wink

Best Regards, Tony Very Happy
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WBOGGS
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Joined: 16 Mar 2007
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Location: Pittsburgh, PA

PostPosted: Mon Mar 19 07 8:36 am    Post subject: Reply with quote

allsmokenofire wrote:
Cal-B-Que wrote:
Already been there; but thanks. I am ususaly getting blue smoke when I Que; I was just wondering what (scientifically) creates the blue smoke, as opposed to white.


Here's an abridged version..I'm sure someone will be more than happy to correct me if I'm wrong. Wink

Colors of light, which produce what we see, have various wavelengths. The shortest of these lean towards the blue colors. When you have a hot clean burning fire, the particulate is very small and doesn't really reflect any lightwaves, but kinda deflects or scatters the shorter blue wavelengths. The longer wavelengths pass right through. This results in the light bluish hue you see.

When a fire is not burning clean, the smoke particles are larger, large enough to pick up other materials like water droplets, etc.,which make them even larger. These larger particles reflect all wavelengths of light equally, which gives them the white appearance.

I could be mistaken here, but I used to be a big Mr. Wizard fan so this is how I remember it. Cool

This is right on; white smoke means water vapor in the smoke. Not a very hot fire.
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