[Stoves] burning wood gas

[Harris, Kirk]

Andrew,

Thank you very much for responding.  It is good to read about your 
experiences.

I agree that the mixing occurs at the face between the wood gas and 
air.  Surface contact between the gasses is very important. If the 
gasses do not meet, there can be no combustion. Turbulence is one way of 
providing lots of surface contact, folding the gases over and over 
again, with every fold increasing the surface contact.  The technique 
which I am working on spreads the wood gas into a wide sheet, giving it 
lots of surface contact with the secondary air.  A different technique 
with a similar result.

Thank you for your interest in this topic,

Kirk H.


On 7/20/2021 5:37 AM, ajheggie at gmail.com wrote:
>
>
> On Mon, 19 Jul 2021 at 23:11, Daniel Pidgeon 
> <daniel.pidgeon at hotmail.com <mailto:daniel.pidgeon at hotmail.com>> wrote:
>
>      Or was the swirl discarded as a lesser form of mixing than the
>     Venturi effect?
>
>
> I used to use a swirl/vortex in my forced draught devices and see no 
> reason to believe it is the most efficient means of mixing, the mixing 
> tends to occur at the shear face between two gases but the energy is 
> still used in creating the vortex and very little is available from 
> the buoyancy effect of the flue gases with no fan.
>
> I would have liked to pursue other ways to create movement of gases, 
> like the steam aspirator but my poor engineering ability limited me.
>
> Andrew
>
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