[Stoves] Stoves Digest, Vol 139, Issue 6

alex english aenglish444 at gmail.com
Mon Mar 7 18:29:49 CST 2022


Norm,
 It's a bit of a joke. For a while now AJ has been making playing his tlud
variations like Glenn Gould. Pure visual music, at least for my taste.
His curiosity is now leading him down a new path. He's just jamming with
fire, and I'm never sure what I'm hearing.
All variant, no real concern at all.
Alex

On Mon, Mar 7, 2022 at 1:49 PM Norman Baker <ntbakerphd at gmail.com> wrote:

> Alex;
>
> Variant of concern? What is that about?
>
> Norm
>
> On Mon, Mar 7, 2022 at 10:04 AM <stoves-request at lists.bioenergylists.org>
> wrote:
>
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>> Today's Topics:
>>
>>    1. Re: This is not a TLUD stove. (A J)
>>    2. Re: This is not a TLUD stove. (Crispin Pemberton-Pigott)
>>    3. Re: This is not a TLUD stove. (ajheggie at gmail.com)
>>    4. Re: This is not a TLUD stove. (alex english)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Sun, 6 Mar 2022 19:21:14 +0000
>> From: A J <awingle at hotmail.com>
>> To: "stoves at lists.bioenergylists.org"
>>         <stoves at lists.bioenergylists.org>
>> Subject: Re: [Stoves] This is not a TLUD stove.
>> Message-ID:
>>         <
>> DM6PR06MB65082C7863AE8CF14FD020BEB0079 at DM6PR06MB6508.namprd06.prod.outlook.com
>> >
>>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> I've been working with a new stove design that is showing a lot of
>> promise to char a load of wood.
>>
>> The stove has no primary air holes in the Fuel chamber.
>>
>> A  3 1/2" metal screen cylinder is placed in the center of the fuel
>> chamber (16 quart bucket with a lid with a 4" exhaust hole)   Wood Pellets
>> are added around the screen and filled to the top, just below the air
>> inlets.  The screen leaves an open hole in the fuel chamber from the top to
>> the bottom.
>>
>> I then added soil on top of the fuel Pellets.  I packed it about an inch
>> deep next to the screen and kept adding the soil over the top of the
>> pellets, but left a 1" ring of exposed pellets next to the fuel chamber
>> walls.  This "ring" supplies the primary air.
>>
>> I add 1/4 cup of gasoline into the bottom of the screen, then ignite the
>> gas.
>>
>> The flame starts the pellets burning at the bottom.  As the oxygen
>> becomes depleted the flame works itself up the screen to the top of the
>> fuel bed.  Once the flame reaches the top it only wood gas is burning.  The
>> secondary air is supplied through the two vortex vents on the sides of the
>> fuel chamber.  The soil on top prevents the flames from burning the top of
>> the fuel load.  The lid is now installed.
>>
>> I'm not 100% certain how exactly the "flame front" works in this stove,
>> but it is somehow not burning from the top down, but from the inside out.
>> Most likely bottom up and inside out at the same time.
>>
>> Near the end of the burn coals will appear on the outer ring of exposed
>> pellets.  They have not started on fire during that process, yet.  I expect
>> they could and that would be beneficial.
>>
>> So far, I've been able to char 95% of the wood and the total fuel volume
>> reduces about 55%.  The undercharred pieces remain at the outer edges.
>>
>> This video is from the end of the burn.  You can see glowing embers
>> appearing on the outer ring.
>>
>> https://youtu.be/3xSp3RfIzxU
>>
>> I believe this design has a ton of potential to be very cheap and easy to
>> make.  It's not perfect yet, but it is worth taking a look at.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
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>>
>> ------------------------------
>>
>> Message: 2
>> Date: Sun, 6 Mar 2022 20:14:14 +0000
>> From: Crispin Pemberton-Pigott <crispinpigott at outlook.com>
>> To: Discussion of biomass cooking stoves
>>         <stoves at lists.bioenergylists.org>
>> Subject: Re: [Stoves] This is not a TLUD stove.
>> Message-ID:
>>         <
>> DM5PR18MB213664D601C6AC67B7402CF8B1079 at DM5PR18MB2136.namprd18.prod.outlook.com
>> >
>>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> Dear Andrew
>>
>> I think it is pulling air down the outside and drafting gas up the
>> centre.  The pyrolysation of the inner fuel is fed by air coming through
>> the fuel.  The draft is supplied by the low density flame.
>>
>> It sounds good. Does it burn to completion? How does the "activity"
>> change as the fuel disappears?
>>
>> Interesting work.
>> Crispin
>>
>>
>>
>>
>> From: Stoves <stoves-bounces at lists.bioenergylists.org> On Behalf Of A J
>> Sent: Sunday, March 06, 2022 12:21
>> To: stoves at lists.bioenergylists.org
>> Subject: Re: [Stoves] This is not a TLUD stove.
>>
>> I've been working with a new stove design that is showing a lot of
>> promise to char a load of wood.
>>
>> The stove has no primary air holes in the Fuel chamber.
>>
>> A  3 1/2" metal screen cylinder is placed in the center of the fuel
>> chamber (16 quart bucket with a lid with a 4" exhaust hole)   Wood Pellets
>> are added around the screen and filled to the top, just below the air
>> inlets.  The screen leaves an open hole in the fuel chamber from the top to
>> the bottom.
>>
>> I then added soil on top of the fuel Pellets.  I packed it about an inch
>> deep next to the screen and kept adding the soil over the top of the
>> pellets, but left a 1" ring of exposed pellets next to the fuel chamber
>> walls.  This "ring" supplies the primary air.
>>
>> I add 1/4 cup of gasoline into the bottom of the screen, then ignite the
>> gas.
>>
>> The flame starts the pellets burning at the bottom.  As the oxygen
>> becomes depleted the flame works itself up the screen to the top of the
>> fuel bed.  Once the flame reaches the top it only wood gas is burning.  The
>> secondary air is supplied through the two vortex vents on the sides of the
>> fuel chamber.  The soil on top prevents the flames from burning the top of
>> the fuel load.  The lid is now installed.
>>
>> I'm not 100% certain how exactly the "flame front" works in this stove,
>> but it is somehow not burning from the top down, but from the inside out.
>> Most likely bottom up and inside out at the same time.
>>
>> Near the end of the burn coals will appear on the outer ring of exposed
>> pellets.  They have not started on fire during that process, yet.  I expect
>> they could and that would be beneficial.
>>
>> So far, I've been able to char 95% of the wood and the total fuel volume
>> reduces about 55%.  The undercharred pieces remain at the outer edges.
>>
>> This video is from the end of the burn.  You can see glowing embers
>> appearing on the outer ring.
>>
>> https://youtu.be/3xSp3RfIzxU
>>
>> I believe this design has a ton of potential to be very cheap and easy to
>> make.  It's not perfect yet, but it is worth taking a look at.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> -------------- next part --------------
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>> http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20220306/d56f94c1/attachment-0001.html
>> >
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Mon, 7 Mar 2022 13:07:36 +0000
>> From: ajheggie at gmail.com
>> To: Discussion of biomass cooking stoves
>>         <stoves at lists.bioenergylists.org>
>> Subject: Re: [Stoves] This is not a TLUD stove.
>> Message-ID:
>>         <
>> CAPSaZeZdSMPsH-s5Lk-vaVpxgdRkzLD0u57oFUjbAwFTXBTHgw at mail.gmail.com>
>> Content-Type: text/plain; charset="UTF-8"
>>
>> On Mon, 7 Mar 2022 at 02:50, A J <awingle at hotmail.com> wrote:
>> >
>> > I've been working with a new stove design that is showing a lot of
>> promise to char a load of wood.
>> >
>> > The stove has no primary air holes in the Fuel chamber.
>> >
>> > A  3 1/2" metal screen cylinder is placed in the center of the fuel
>> chamber (16 quart bucket with a lid with a 4" exhaust hole)   Wood Pellets
>> are added around the screen and filled to the top, just below the air
>> inlets.  The screen leaves an open hole in the fuel chamber from the top to
>> the bottom.
>> >
>> > I then added soil on top of the fuel Pellets.  I packed it about an
>> inch deep next to the screen and kept adding the soil over the top of the
>> pellets, but left a 1" ring of exposed pellets next to the fuel chamber
>> walls.  This "ring" supplies the primary air.
>>
>> A picture is worth a thousand words as they say Aaron, any chance of a
>> sketch of the layout for those of us who have trouble visualising your
>> layout?
>>
>> Andrew
>>
>>
>>
>> ------------------------------
>>
>> Message: 4
>> Date: Mon, 7 Mar 2022 08:24:29 -0500
>> From: alex english <aenglish444 at gmail.com>
>> To: ajheggie at gmail.com,  Discussion of biomass cooking stoves
>>         <stoves at lists.bioenergylists.org>
>> Subject: Re: [Stoves] This is not a TLUD stove.
>> Message-ID:
>>         <CA+6hwOp9L8n3G0fQaG=
>> 87YLo3VsAnkZBv7CWbFa24Gij9sanSg at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Not sure you want it in the public domain. It is clearly a 'variant of
>> concern'.?
>>
>> On Mon, Mar 7, 2022, 8:12 AM , <ajheggie at gmail.com> wrote:
>>
>> > On Mon, 7 Mar 2022 at 02:50, A J <awingle at hotmail.com> wrote:
>> > >
>> > > I've been working with a new stove design that is showing a lot of
>> > promise to char a load of wood.
>> > >
>> > > The stove has no primary air holes in the Fuel chamber.
>> > >
>> > > A  3 1/2" metal screen cylinder is placed in the center of the fuel
>> > chamber (16 quart bucket with a lid with a 4" exhaust hole)   Wood
>> Pellets
>> > are added around the screen and filled to the top, just below the air
>> > inlets.  The screen leaves an open hole in the fuel chamber from the
>> top to
>> > the bottom.
>> > >
>> > > I then added soil on top of the fuel Pellets.  I packed it about an
>> inch
>> > deep next to the screen and kept adding the soil over the top of the
>> > pellets, but left a 1" ring of exposed pellets next to the fuel chamber
>> > walls.  This "ring" supplies the primary air.
>> >
>> > A picture is worth a thousand words as they say Aaron, any chance of a
>> > sketch of the layout for those of us who have trouble visualising your
>> > layout?
>> >
>> > Andrew
>> >
>> > _______________________________________________
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>> > http://stoves.bioenergylists.org/
>> >
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>> ------------------------------
>>
>> End of Stoves Digest, Vol 139, Issue 6
>> **************************************
>>
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