[Stoves] Stoves Digest, Vol 131, Issue 10

[Norman Baker]

Kirk;

I finally had time to read over and think about your TLUD document.

I think your manuscript is totally on target for combustion in a clean
cookstove. Well done.

I am using very similar ideas and concepts for my 55 gallon TLUD. About to
start some fabricating and testing. My wife and I are planning to go to
Aprovecho after my work here at my home is done. We will be doing emissions
testing with Ryan and perhaps some with Sam. We suspect our trip will be in
the fall or late fall - after the fires in OR are under control.

Keep up the good work.

Norm

On Wed, Jul 21, 2021 at 3:26 PM <stoves-request at lists.bioenergylists.org>
wrote:

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>    1. Re: burning wood gas (Harris, Kirk)
>    2. Re: burning wood gas (ajheggie at gmail.com)
>
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 20 Jul 2021 10:59:10 -0700
> From: "Harris, Kirk" <gkharris316 at comcast.net>
> To: ajheggie at gmail.com, Discussion of biomass cooking stoves
>         <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] burning wood gas
> Message-ID: <f923cf98-7981-41ad-d012-999553ea68af at comcast.net>
> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>
> 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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> Message: 2
> Date: Tue, 20 Jul 2021 20:51:16 +0100
> From: ajheggie at gmail.com
> To: Discussion of biomass cooking stoves
>         <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] burning wood gas
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> On Tue, 20 Jul 2021 at 18:59, Harris, Kirk <gkharris316 at comcast.net>
> wrote:
>
> >
> > Thank you for your interest in this topic,
> >
> > Kirk H.
> >
>
> Kirk I doubt I'll ever lose interest in stoves and their part in indoor
> pollution or the phenomenon of the descending pyrolysis front but I think I
> reached the limits of my backyard attempts so it's always interesting to
> see the results of better practitioners' efforts.
>
> Andrew
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