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<DIV><FONT face=Calibri>sabes que cuidado que te estas enamorando a distancia, o
lo tenias dentro de ti y te salio ahora despues de tantos años, pero es
agradable y bonito sentir por alguien, preocuparse, pensar, saber, buscar a
alguien, la incognita es como saldra esto con la mujer que se come a los tigres
jajajajajajaja ..david...............</FONT></DIV>
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<DIV style="font-color: black"><B>From:</B> <A title=rongretlarson@comcast.net
href="mailto:rongretlarson@comcast.net">rongretlarson@comcast.net</A> </DIV>
<DIV><B>Sent:</B> Saturday, July 16, 2011 11:50 PM</DIV>
<DIV><B>To:</B> <A title=stoves@lists.bioenergylists.org
href="mailto:stoves@lists.bioenergylists.org">Discussion of biomass cooking
stoves</A> </DIV>
<DIV><B>Subject:</B> Re: [Stoves] Fire Stump</DIV></DIV></DIV>
<DIV><BR></DIV>
<DIV style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12pt">Ron H et
al<BR><BR> Thanks for the additions. I agree with all
your comments. I would like to study how this might burn with a tiny air
hole. I am surprised it has such a nice flame with only air from the
top. <BR> The URL didn't work for me, but I
eventually got to a video. It was burning at the outside at 1 hour
twenty.<BR><BR> They also had a "yule" log, which burned
horizontally with a different set of "slicings"<BR><BR>Ron L<BR><BR>
<HR id=zwchr>
<B>From: </B>"Ronald Hongsermeier" <rwhongser@web.de><BR><B>To:
</B>"Discussion of biomass cooking stoves"
<stoves@lists.bioenergylists.org><BR><B>Sent: </B>Saturday, July 16, 2011
8:56:09 PM<BR><B>Subject: </B>Re: [Stoves] Fire Stump<BR><BR>Dear Ron,<BR><BR>I
was going to reply to your questions internally, but for some reason-- probably
that you used html to answer-- the paragraph marking on the left won't break for
it to be clear what I am writing and what you wrote. For your first question. I
think that it is obvious from observation that the vid referenced by Jeff Davis
is made with either 3 or 6 plunge cuts in the end of the log.(period). What
allows it to burn so long is that it is O2 limited/regulated by the slits and by
the air only coming from the top.<BR> <BR>When you go to a full partial
wedge cut, you loose quite a bit of radiant energy and the amount increases
rapidly with the length of burn time.<BR><BR>The version with the 2 relatively
large holes (rocket-like) could be made a near tlud if at least part of the long
hole was conically reduced toward the bottom and the "rocket" hole was radically
reduced in size _or_ given some kind of simple valve/control.<BR><BR>Your
observation about the char production is probably right. No one method does
everything.<BR><BR>The easiest way to make the big holes would be with an
appropriately dimensioned
lathe.<BR><BR>regards,<BR>Ron<BR>w<BR>h<BR><BR><BR><BR>
<BLOCKQUOTE
style="BORDER-LEFT: blue 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; PADDING-TOP: 5px">
<HR>
<B>Von:</B> rongretlarson@comcast.net<BR><B>Gesendet:</B> Jul 17, 2011 1:22:11
AM<BR><B>An:</B> "Discussion of biomass cooking stoves"
<stoves@lists.bioenergylists.org><BR><B>Betreff:</B> Re: [Stoves] Fire
Stump<BR><BR>
<DIV>
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<DIV
style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12pt">Rob:<BR><BR>
Thanks for sharing these additions. Does anyone know if the unit
first given by Jeff Davis had a "Rocket" design (horizontal hole) for air or
whether the central hole might go all the way through to the
bottom?<BR><BR><BR> I think these (both central hole and
splits) could make for an interesting classroom demonstration. The
points to make are<BR><BR> 1. that the energy from the
flame anywhere is mostly captured.and used to keep the flame going on opposite
surfaces. For the rocket shape, almost no radiant energy is lost.
For the wedges, little is lost. None. of the narratives I watched (and
there are a lot more than Rob has given) talked about the importance of
radiant energy cappture. It would be fairly easy to pull the wedges
apart in steps - and at some separation the flames would go out.- showing the
importance of capturing this radiant energy.<BR><BR>
"Stumps" of different lengths but otherwise the same could show the chimney
effect nicely. Might be able to control power level with a lower
plug.<BR><BR> 2. In the Rocket (central hole design)
it would have been good to have someone show flame control by partially
closing the lower air supply. Might be able to find a way to relate air
hole size (and air volume) to power level<BR><BR> 3. It
would be interesting to see if a TLUD design could be operated with a set of
secondary air holes part way up. I don't think so - since the
pyrolysis front drops to the bottom almost immediately. Then the
combustion will mostly occur at the bottom. I think it would be
almost impossible to make char with this design.<BR><BR> 4.
There are sawdust stoves (sometimes called Boy Scout??) that operate similarly
(to the central hole design). Dr. Priya Karve did some nice
theoretical/experimental work on such.<BR><BR> 5. No one
talked about the great efficiency of the Kelly Kettle - because the flame is
going up the center.<BR><BR> 6. I wish I had seen how
difficult it was to drill the central hole of the Rocket design. Is
there a power tool on the market like the chain saw (but for drilling
holes)?<BR><BR><BR> 7. This is way off topic - but there was
great long video dubbing a 1930 film of logging
at:<BR><BR>http://www.youtube.com/watch?v=cIKCjQdxtO0&feature=related<BR><BR><BR>Ron<BR>_____________________<BR><BR><B>From:
</B>"Rok Oblak" <rok.stoves@gmail.com><BR><B>To: </B>"Discussion of
biomass cooking stoves" <stoves@lists.bioenergylists.org><BR><B>Sent:
</B>Saturday, July 16, 2011 12:27:22 PM<BR><B>Subject: </B>Re: [Stoves] Fire
Stump<BR><BR>Here are Siberian, Finnish and Swedish and supposedly a Canadian
version! No stove needed!<BR><BR><A
href="https://freemailng5404.web.de/online/jump.htm?goto=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DgMLzY48YwEM%26feature%3Drelated"
target=_blank>http://www.youtube.com/watch?v=gMLzY48YwEM&feature=related</A><BR><A
href="https://freemailng5404.web.de/online/jump.htm?goto=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DjOAejiwCIpg%26feature%3Drelated"
target=_blank>http://www.youtube.com/watch?v=jOAejiwCIpg&feature=related</A><BR><A
href="https://freemailng5404.web.de/online/jump.htm?goto=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DwEHSJftQ9Vg%26feature%3Drelated"
target=_blank>http://www.youtube.com/watch?v=wEHSJftQ9Vg&feature=related</A><BR><A
href="https://freemailng5404.web.de/online/jump.htm?goto=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DndcXILxxy_0%26feature%3Drelated"
target=_blank>http://www.youtube.com/watch?v=ndcXILxxy_0&feature=related</A><BR><BR><BR><BR>
<DIV class=gmail_quote>On Fri, Jul 15, 2011 at 10:19 PM, Richard Stanley
<SPAN><<A href="mailto:rstanley@legacyfound.org"
target=_blank>rstanley@legacyfound.org</A>></SPAN> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>Jeff,<BR><BR>Clever stuff: Someone obviously made
three intersecting plunge cuts through the center long axis of the stump,
in a 6-sided star pattern. This effectively has turned a fuelwood log
into a hollow core briquette !<BR><BR>Would like to<BR>1) compare its burn
performance: heat curve emissions time to ignite, time to heat xkgs of water
to boiling etc,<BR>..... as compared to same log, ex these star cuts.<BR>2)
pursue same star pattern molded into an agro residue briquette.<BR><BR><FONT
color=#888888>Richard Stanley<BR><A
href="https://freemailng5404.web.de/online/jump.htm?goto=http%3A%2F%2Fwww.legacyfound.org"
target=_blank>www.legacyfound.org</A><BR>NW Obamaland.</FONT><BR>
<DIV>
<DIV> </DIV>
<DIV class=h5><BR><BR>On Jul 15, 2011, at 7:23 PM, Jeff Davis
wrote:<BR><BR>> Dear List,<BR>><BR>> The odd things one can find
when shopping for nuts:<BR>><BR>> <<A
href="https://freemailng5404.web.de/online/jump.htm?goto=http%3A%2F%2Fwww.ecoforestfirewood.com%2Feco-forest%2Flight-n-go-tm-bonfire-log%2F"
target=_blank>http://www.ecoforestfirewood.com/eco-forest/light-n-go-tm-bonfire-log/</A>><BR>><BR>><BR>>
Truly stumped,<BR>><BR>><BR>> Jeff<BR>><BR>><BR>>
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for more Biomass Cooking Stoves, News and Information see our web
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clear=all><BR>--<BR>
<DIV><B>Rok Oblak, MAA Design</B><BR><BR>+1 604 710 1615<BR><A
href="mailto:rok.stoves@gmail.com"
target=_blank>rok.stoves@gmail.com</A><BR><A
href="https://freemailng5404.web.de/online/jump.htm?goto=http%3A%2F%2Fwww.holeyroket.com%2F"
target=_blank>www.holeyroket.com</A><BR><BR>1605-1255 Pendrell Street</DIV>
<DIV>Vancouver, BC V6E 1E7</DIV>
<DIV>Canada</DIV><BR><BR>_______________________________________________<BR>Stoves
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