[Stoves] Stoves Digest, Vol 125, Issue 17

Norman Baker ntbakerphd at gmail.com
Fri Jan 29 16:33:55 CST 2021


Ron and everybody;

First, several of us, apparently mostly David Evitt, tried to arrange a
spatial chat for clean burning TLUDs. As far as I can tell it was a dismal
failure. I really tried to contribute but, we are on Starlink beta internet
access. When it works it's incredibly fast. The problem is in a 40 minute
video it will cut out 6 to 7 times or slow down so much that it is not
usable. So, I went to town to a Wi-Fi hotspot where we discovered we did
not have sufficient bandwidth for spatial chat. I could bring up my own
picture and I heard someone say hello norm and that was it. After several
attempts, it was clear it was not going to work even at the third Wi-Fi
hotspot. As far as I can tell, insufficient bandwidth is going to be a
problem for all potential rural attendees for at least a year or two.

Second, I really like the new way ethos was presented this year. But, what
can you expect from such a talented Board of Directors and organizers. This
was in my opinion a game changing way to have a meeting. Please keep it up
and do it again next year. Of course, face-time is great at a physical
meeting, but the new method of presentation is excellent. Like Ron, I
really appreciate the power points being available before the actual
meeting time.

Third, it seems to me with the benefits and the new easier inclusion of
members and participants with the way ethos was organized this year,
physical meetings should be encouraged for subtopics much like the TLUD
Summit we had in recent years at Aprovecho. I have personally always found
that meetings concentrated on one subject matter like the old stove camps
at Aprovecho, are far more beneficial.

Norm

On Fri, Jan 29, 2021 at 1:19 PM <stoves-request at lists.bioenergylists.org>
wrote:

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> Today's Topics:
>
>    1. ***SPAM***  Comment on ETHOS 21 (Ronal Larson)
>    2. Re: A low-cost hood possibility (ajheggie at gmail.com)
>    3. Re: on ETHOS 21 (ajheggie at gmail.com)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 28 Jan 2021 23:39:36 -0700
> From: Ronal Larson <rongretlarson at comcast.net>
> To: Discussion of biomass cooking stoves
>         <stoves at lists.bioenergylists.org>
> Subject: [Stoves] ***SPAM***  Comment on ETHOS 21
> Message-ID: <86BC6B1C-25DE-40E6-B2E2-8733ADF6A724 at comcast.net>
> Content-Type: text/plain; charset="utf-8"
>
> List:
>
>         I?ve been asked a few times why so little messaging these days on
> this list.  I was glad to be able to say that last night I had sent in a
> message on using a (possibly) cheap quarter barrel as a hood to help on
> health issues.  Anyone else able to expand on any stove topic?
>
>         But this is to report after 4 of 5 days in ETHOS-2021 - that for
> COVID reasons is being conducted on a combination of ZOOM and a new-to-me
> program called ?spatial.chat?. For organizers of on-line conferences like
> this one - this last app is worth investigating.  You have to use it to
> understand what it can do.
>
>         I personally prefer the ETHOS format this year over an in-person
> meeting.  Of course we all miss personal contact, but the formatting has
> included plenty of time (can be more than one-on-one) for interesting
> dialogs.  Five half days is a lot better for me than 2.5 full days and two
> half-days lost in travel time.  Also able to have many more papers from
> over-seas.
>
>
>         At the ETHOS site, we have been able to read/view Ppts in advance
> of meetings with the air time with emphasis on questions - this I much
> prefer:  See   http://www.ethoscon.com/ethos-agenda-2/
>
>         We all (maybe 75-100??) paid $20 - which is a bargain for what can
> be almost  20 hours (almost half in semi-public group discussion on
> spatial.chat.   I have no idea whether those who have not paid their $20
> can see the many agenda PPts, but if so, I strongly recommend doing so.
>
>         From my biochar-prejudiced perspective, the best Ppt was that of
> Tom Miiles - of course on biochar.    Tom gave a  new term for biochar I
> haven?t seen before -  and recommend that char-making stove enthusiasts
> advance it:   biochar in soil can be thought of as bio-geo batteries.
> Many of us have been pushing biochar as a lower cost back-up for wind and
> solar than batteries -- so I appreciate Tom's word ?storage? here.
> Unfortunately not much on biochar use from cookstoves (but see next to last
> paragraph).
>
>         The shortage of TLUD discussions will be fixed tomorrow when Paul
> Anderson will be speaking (see above agenda for timing details of Paul ?s
> talk.   Also Dean Still tomorrow, with a minute or so on Kirk Harris?
> latest stove - which Dean calls the best he has seen.   Both will be on
> about noon EST (the full day starts 2 hours earlier).
>
>         I also recommend a talk by Kevin McLean on Monday.  Partly because
> of the big cost savings he described using rock beds - but also because of
> the way the method is being rapidly accelerating. - with a cost of 2c per
> new adopter (using church groups),    I recommend Kevin?s work also on
> really low cost TLUDs - not discussed
>
>         By far the best part of the day for me was Julian Winter saying
> (during discussions - not a paper)  that TLUD implementation problems in
> Bangladesh are already over.  There has been such NPP success with farmers
> using the biochar that their TLUD (a fine one built locally) can?t keep up
> with demand.   In some cases,  Julian's Bangladesh TLUD is being used only
> for making biochar (for soil application) - no cooking.
>
>         I hope others can pipe in with other stove types (glad to again
> see some nice reports on solar stoves).  I?ve not mentioned a lot of good
> new stove material.
> Ron
>
>
>
>
>
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> ------------------------------
>
> Message: 2
> Date: Fri, 29 Jan 2021 14:57:30 +0000
> From: ajheggie at gmail.com
> To: Discussion of biomass cooking stoves
>         <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] A low-cost hood possibility
> Message-ID:
>         <CAPSaZebONrBrfCL3dV=
> 1ffNCh1si2AEfja-0LuC-T6Bh256KMg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Ronal
>
> One would still need to have a pressure difference from the area above the
> stove to the outlet from the hood. Much of the temperature gradient from
> the fire to the chimney top has been lost in the mixing of flue gases and
> ambient air in the cooking area. In the absence of a fan what would
> determine what path the gases chose to take, if the hood presented an
> obstruction the gases would simply go round and up? In a windy area
> something like the cowl  used in oast houses might produce enough
> depression but that also adds to cost and complication
>
> On Thu, 28 Jan 2021 at 11:17, Ronal Larson <rongretlarson at comcast.net>
> wrote:
>
> > Stove list:
> >
> > I?ve been talking with several list members about one drawback of TLUDs
> > being the complexity and cost of adding a chimney.  As clean as TLUDs
> are,
> > they would certainly receive more favorable notice if the exhaust could
> be
> > easily vented.
> >
> > A quarter of a converted waste 200 liter (55. gallon) barrel might do it
> > cheaply enough. .Can come in different colors - and 4 can be totally made
> > locally from one drum - dimensions  about 28 x 28 x 82 cm  (11 x 11 x 33
> > inches).
> >
> > Is using a locally made quarter-barrel a new or old idea?  Dimensions
> > close enough to  ideal?   I presume there are dozens of ways to mount and
> > allow different amounts of closure for winter  and rainy conditions.. or
> if
> > electricity is possible - a fan and light.
> >
> > Height above TLUD could be up to stove owner.  This width looks like it
> > could handle 3-4 stoves in a row.  US hoods seem to be standard at 30
> > inches width.
> >
> >
> > Ron
> >
> >
> > _______________________________________________
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> >
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> >
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> >
> > for more Biomass Cooking Stoves,  News and Information see our web site:
> > http://stoves.bioenergylists.org/
> >
> >
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> ------------------------------
>
> Message: 3
> Date: Fri, 29 Jan 2021 15:06:17 +0000
> From: ajheggie at gmail.com
> To: Discussion of biomass cooking stoves
>         <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] on ETHOS 21
> Message-ID:
>         <
> CAPSaZeZPbpFEg2oh5xfF+OF-znHDSbjCj-d9Np5Dd0CoHsXRrw at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> On Fri, 29 Jan 2021 at 07:47, Ronal Larson <rongretlarson at comcast.net>
> wrote:
> >
> > List:
> >
> > I?ve been asked a few times why so little messaging these days on this
> list.
>
> I cannot explain it but feel the server's bad habit of often
> prepending a spamflag not only puts people off but also means the
> message is discarded unseen. Unfortunately there is nothing we seem to
> be able to do to edit it out.
>
>  >I was glad to be able to say that last night I had sent in a message
> on using a (possibly) >cheap quarter barrel as a hood to help on
> health issues.  Anyone else able to expand on any stove topic?
>
> We have possibly fallen below the critical mass of regular posters so
> posts don't seem to be commented on.
> >
> >
> > I personally prefer the ETHOS format this year over an in-person
> meeting.  Of course we all miss personal contact, but the formatting has
> included plenty of time (can be more than one-on-one) for interesting
> dialogs.  Five half days is a lot better for me than 2.5 full days and two
> half-days lost in travel time.  Also able to have many more papers from
> over-seas.
>
> This must be good for  regular attendees' carbon footprint.
> >
>
> > By far the best part of the day for me was Julian Winter saying (during
> discussions - not a paper)  that TLUD implementation problems in Bangladesh
> are already over.  There has been such NPP success with farmers using the
> biochar that their TLUD (a fine one built locally) can?t keep up with
> demand.   In some cases,  Julian's Bangladesh TLUD is being used only for
> making biochar (for soil application) - no cooking.
>
> Heartening news
> Andrew
>
>
>
> ------------------------------
>
> Subject: Digest Footer
>
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>
> for more Biomass Cooking Stoves,  News and Information see our web site:
> http://www.bioenergylists.org/
>
>
> ------------------------------
>
> End of Stoves Digest, Vol 125, Issue 17
> ***************************************
>
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