[Stoves] benefits from reduced indoor air pollution.

[Andrew Heggie]

On 16 October 2017 at 18:24, Jaakko Saastamoinen
<Jaakko.Saastamoinen at lut.fi> wrote:
> I studied nitrogen release from single wood particles [1], NO formation in fireplaces [2] and in grate combustion [3] with colleagues ([1] Release of nitrogen compounds from wood particles during pyrolysis. Environmental Combustion Technologies 1 (2000), 289-316. [2] Emission formation during wood log combustion in fireplaces - Part II: Char combustion stage. Progress in Computational Fluid Dynamics 6 (2006), 209-216.  [3] NOx formation in grate combustion of wood. Clean Air: International Journal on Energy for a Clean Environment 4 (2003), 30 p.).
>
> About 50% of fuel N is released in volatiles. Part of NO produced is reduced to harmless N2 by reaction with char 2NO+2C=N2+2CO. NO emissions from TLUD can become small after a thick char layer is formed, since NO formed below can be reduced in the reaction with char when the flue gas is flowing through the layer.  This applies to the NO formed in the flame in the ignition front, but not to NO formed in the flame above the bed from the precursors NH3 and HCN. Lowering air rate reduces NO emissions.

Thanks for joining in Jaakko, it's good to see contributions from
proper scientists.

Yours and Tom's posts suggests in normal stoves, burning wood, NOx
should not be an issue.

Andrew