[Stoves] Purple flame

Tom Miles tmiles at trmiles.com
Mon Sep 24 08:44:36 PDT 2012


Dean,

 

If you are the only one seeing it, is that a purple "flame" or a "Purple
Haze"? Maybe it's a generational thing. 


Tom

 

From: stoves-bounces at lists.bioenergylists.org
[mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of Dean Still
Sent: Sunday, September 23, 2012 5:11 PM
To: Discussion of biomass cooking stoves
Subject: [Stoves] Purple flame

 

Hi Stovers!

 

I've been noticing a shift from blue flames above the burning bio-char in a
TLUD to purple flames nearer the end of the burn when the bottom of the pile
is glowing bright orange. I suppose that the blue flame is caused by burning
CO but I wonder why the purple forms after the blue? The blue self
sustaining flame doesn't heat the water in the pot as well as the purple
flame phase although the pile of bio-char is fully ignited at that time and
may account for the more rapid rise in water temperature.

 

Any ideas?

 

Best,

 

Dean

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