[Stoves] RE Relationship between High and Low PowerCarbonMonoxideand Particulate Matter Emissions in Rocket Stoves

[Crispin Pemberton-Pigott]

Dear Dean

I have been thinking about your test this afternoon and there are two ways I 
think you could do it.  First the 'pot-choking' approach be reducing 
out-flow, and the other which is the 'air choking' approach.

I don't have much evidence but I think preventing air from getting into a 
stove makes it behave differently from preventing air getting out.

The first thing to try is to limit the air going in with the fuel so at 
least you know where the air is coming from: preferably from below.  Then 
you could compare the secondary air model with the non-one.

At some point the air will be insufficient to burn the CO well (probably at 
less than an excess air of 25-50%).  Then the particulates will shoot up 
along with the CO.

You could look at lowering the pot in a measured sequence as a throttle on 
the outflow.  My preference would be to 'use' the draft power to air 
secondary air rather than speed it past the pot.  That way you get better 
mixing (for free) and can introduce control of it.

Still thinkin'

Regards
Crispin