[Stoves] Inner color of combustion chamber?

[Bamboo Science Group]

Dean et al, 

Great comments by Kirk and AJH,
I think the quick answer is yes. 

According to Thermoworks.com, Carbon in the form of candle soot (inside of stove)
has an emissivity of 0.95 and polished aluminum ( outside of stove) is 0.05. So then in the "as used" conditions, this what you have. 
So yeah black inner, shiny outer is a good first order design goal. 

As you well know, the conditions of stove use are dynamic, e.g. initial heating where the 
Cp of the inner wall has to be overcome ( heat up) is different to the flame temp and swirl inducing inner wall surface dynamic requirements but in the first cut these are in the noise levels of consideration. 
G

Sent from my iPad

> On Apr 26, 2015, at 8:10 AM, ajheggie at gmail.com wrote:
> 
> [Default] On Sat, 25 Apr 2015 22:57:25 -0700,Dean Still
> <deankstill at gmail.com> wrote:
> 
>> Hi G,
>> 
>> Just wondering if black on the inside of a metal combustion chamber and
>> silver on the outside is a beneficial combination.
> 
> Given that the re radiating of heat from the wall to the interior
> depends on both emissivity and the 4th power of the absolute
> temperature of the wall  just insulating the wall will have a bigger
> effect even if this means the emissivity is lower.
> 
> Downside is that in keeping the metal surface hotter you are probably
> lessening its life.
> 
> AJH
> 
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