[Stoves] Inner color of combustion chamber?

[imap gotsky]

Dean
if the surfaces have low long wave thermal emissivity they will be better radiant heat insulators and the combustion cambers will run hotter. shiny surfaces generally tend to be that way however dull black color tends to have greater long wave emissivity.

shinny black nickel or black chrome make good selective surfaces for solar heat collectors(see farrington danniels)

My guess is that the inside of a hot combustion chamber would not stay shinny very long

God bless
Larry



From: Dean Still 
Sent: Friday, April 24, 2015 1:07 PM
To: Discussion of biomass cooking stoves 
Subject: [Stoves] Inner color of combustion chamber?

Hi All, 

At the Aprovecho weekly meeting we were discussing how to improve performance in a Rocket stove. We were wondering about radiation.

Would temperatures rise if the inside of the refractory metal combustion chamber was black and the outside shiny?

Best,

Dean


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