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Ron,<br>
<br>
1. I am glad to see via the website <a class="moz-txt-link-abbreviated" href="http://www.worldstove.com">www.worldstove.com</a> that
World Stove is again with a presence on the Internet. Copyright
2018. Attractive site. <br>
<br>
2. I am not into FaceBook communications, and Nat is still not
listed as a recipient of these email messages, (but I hope Ron or
someone is sending him blind copies or keeping him posted.) WE
(not just me) look forward to further contact with him.<br>
<br>
3. Several important items on the website (I might have missed
something, so people should read it for themselves):<br>
A. Six different models of stoves, but not described.<br>
B. Use of pellet fuel mainly (which is fine, and is highly
appropriate). <br>
C. No clearly identified projects, nor mention of numbers of stoves
in use.<br>
D. The diagram of the stove (as included in an earlier message by
someone) is from this website, not from some earlier posting. <br>
E. World Stove does not work with individuals, but only with
entities that are screened (vetted) by World Stove. No indication
of who those currently are. <br>
F. A very important technical note:
<blockquote type="cite">The air is drawn through a flame cap at a
rate that is slower than that which would be needed to consume all
the oxygen present in the air, leaving mostly heated nitrogen as
the driving force for our pyrolisis in the fuel. A significant
advantage of this is spectrographic analysis of biochar produced
in a correctly operated LuciaStove shows that the resultant
biochar has a nitrogen spike. Nitrogen is a very volatile gas and
in other forms of pyrolisis is driven out of the biomass.
Subsequent lab and greenhouse analysis have confirmed that the
nitrogen in the biochar produced by the LuciaStove is accessible
to plants.</blockquote>
FOR ME (maybe not for others), the above is the first addressing of
the issue that O2 cannot make it downward throught the top flames.
Pyrolysis certainly can happen without O2 present (as seen in any
retort where flame is only on the outside of the biomass
container). And N2 that is at combustion temperatures could bring
the needed heat to the biomass. <br>
<br>
If that is indeed the case, the hot N2 will NOT cause a TLUD type
MPF (pyrolytic front that is rather thin, maybe 2 cm.). Instead,
the hot N2 gases will dry, torrify, and then pyrolyze a zone as deep
as the area where the temperatures are sufficiently high. It would
be nice to have some research evidence about the thickness of the
zone where these actions are occuring. For example, we want to
know what is the temperature at each level inside the column of fuel
as the stove is in opeation for 10 minutes, then 20, then 30, 40,
etc to the end. And to know the temperature of the gases that are
exiting outward from the fuel column at the lower holes. (Note:
these holes should not be called "primary air" holes because that is
not their function in such stoves.).<br>
<br>
There should be questions about the nature of the char / biochar
that is produced. Retort chars are anoxic (without any O2 or flame
presence), whereas TLUD chars are oxic (with a glowing burning at
the MPF). We do recognize the presence and release (change of
molecular position) during pyrolysis of some of the oxygen atoms in
the carbohydrates, and they can become CO and especially CO2 (with
exothermic release of heat), but no "glow" as far as I know. Nobody
talks of a "flame-type process" inside of retorts barrels. None
should occur in the stoves that are being discussed here. <br>
<br>
I do maintain that such stoves (crediting them with downward flows
of gases) are quite distinct, are certainly not TLUD stoves. Those
stoves deserve a REAL NAME that is not just to change the letter U
to an O in TLUD to be TLOD. Can someone please give this stove
type a REAL name that is not a derivative of a stove type (TLUD)
which it is not. <br>
<br>
Personal note to Ron, but for everyone to assist: Can I beg you to
stop calling it TLOD. It deserves a real name. Even the terms
"opposing draft" or "opposite draft" is demeaning and diminishing of
the uniqueness of these stoves because it requires someone to know
about what it is opposing. Please go get a decent name for this
stove type. And stop hanging on the coattails of the established
TLUD name (which is not just an acronym any longer). <br>
<br>
Let's have a contest: NAME THAT STOVE!!! (actually name that
STOVE TYPE). Here are some names (partly in jest).<br>
A. The venturi effect is pulling the pyrolytic gases outward from
those lower holes. Sort of sucking out those gases. Hence: The
sucker stove. (No, not a good name.)<br>
<br>
B. Name it after Nat Mulcahy or World Stove. (Nat should be
consulted about that possibility.)<br>
<br>
C. Please do not call it "Lucia" because that name has special
meaning with the forced air stove by World Stove, which is VERY
different from the stove type being discussed.<br>
<br>
D. Oppositional stoves. Or simply "OD" without any reference
to TL (top lit). Maybe "DOD" or "DDOD" for DownDraft
Opposing Draft. But I think that the words "opposing" and
"opposition" do not do justice. And DD for downdraft has a clear
meaning in the world of full-featured gasifiers .<br>
<br>
E. Why not call it a "rockette" or "rocket-et" stove so that it can
be confused with rocket stoves? (no, not a good name.)<br>
<br>
Marketing is important. The name for this stove is important.
And TLOD sucks as name, and it comes from Ron, not from Nat. (And
I personally consider it to be an infringement on the established
name of TLUD.) <br>
<br>
So please get a name before "sucker" catches on. And Nat can ask
Ron to not bring up that "O" name any more.<br>
<br>
Warm regards to Nat. I hope this message gets sent onward to you.
I remember well and fondly our conversations at some meetings.
Glad to hear about your two children!! And about activity by World
Stove. I hope you send further information.<br>
<br>
Paul <br>
<br>
<pre class="moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>
Skype: paultlud Phone: +1-309-452-7072
Website: <a class="moz-txt-link-abbreviated" href="http://www.drtlud.com">www.drtlud.com</a></pre>
<div class="moz-cite-prefix">On 3/31/2018 11:57 PM, Ronal W. Larson
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:118D3D9C-D50B-4BCE-BCA6-4503E48DBD87@comcast.net">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<div class="">
<div class="">Paul et al (Note correct address for Kirk Harris
now)</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">Inserts below (short because it is getting late)</div>
</div>
<div class=""><br class="">
</div>
<br class="">
<div>
<blockquote type="cite" class="">
<div class="">On Mar 31, 2018, at 9:30 PM, Paul Anderson <<a
href="mailto:psanders@ilstu.edu" class=""
moz-do-not-send="true">psanders@ilstu.edu</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div text="#000000" bgcolor="#FFFFFF" class=""> Ron,<br
class="">
<br class="">
You treat the past as if it were the present.
<blockquote type="cite" class=""><span class="Apple-tab-span" style="white-space:pre"></span><b
class="">RWL1: Thanks to Crispin for his additional
support that World Stove is alive and well. </b></blockquote>
Crispin said nothing about the present. His was a prior
observation. NO news about the state of World Stove. </div>
</div>
</blockquote>
<div><span class="Apple-tab-span" style="white-space:pre"> </span><b
class="">[RWL1’: I don’t know the date of Crispin’s last
connection with World Stove. Mine was an email exchange
this past week with Nat. In that, he sounded content. His
website is quite current.</b></div>
<div><br class="">
</div>
<br class="">
<blockquote type="cite" class="">
<div class="">
<div text="#000000" bgcolor="#FFFFFF" class="">
<blockquote type="cite" class=""><b class=""><span class="Apple-tab-span" style="white-space:pre"></span>a)
On the one hand, Nat has a patent -.........</b></blockquote>
<blockquote type="cite" class=""><b class=""><span class="Apple-tab-span" style="white-space:pre"></span>b)
I admire Nat’s work, and know he has invested a lot
of time and money in its development. </b></blockquote>
The word "has" can refer to things done earlier and still
acknowledged as having occured. But "has invested" is
not the same as "is investing." There is ZERO evidence of
Nat's continuing to work on his devices. I hope that he
is doing so, but the silence for 5 or 8 years is total.
Only you (Ron) keep making it sound as if World Stove is
still active or if Nat is still active with stoves. </div>
</div>
</blockquote>
<div><span class="Apple-tab-span" style="white-space:pre"> </span><b
class="">[RWL2’: Nat communicates a lot on Facebook.
Mostly personal, but not always; now has two youngsters.
“silence is not accurate - only on this list. I am pretty
sure he has been in contact with people at GACC. I take my
correspondence to be a bt more than “ZERO evidence”.</b></div>
<br class="">
<blockquote type="cite" class="">
<div class="">
<div text="#000000" bgcolor="#FFFFFF" class="">
<blockquote type="cite" class=""><b class=""><span class="Apple-tab-span" style="white-space:pre"></span>e).
Maybe Nat can authorize (with royalties) other
manufacture and use of what he is selling.</b></blockquote>
The word "is" is not appropriate without evidence of some
(any?) selling actually occurring or even being attempted.<br
class="">
</div>
</div>
</blockquote>
<span class="Apple-tab-span" style="white-space:pre"> </span><b
class="">[RWL3’: Disagree. I don’t believe there is any
statute of limitations if one has a valid current patent (I
think was applied for in 2007 and granted (?) in 2013. - all
stated on the patent number I gave below.</b><br class="">
<blockquote type="cite" class="">
<div class="">
<div text="#000000" bgcolor="#FFFFFF" class=""> <br
class="">
Thank you for bringing up a previous message from me, even
though you and I disagree about this topic. I totally
continue to maintain what I wrote in that cited message.
Tryner's work was seriously flawed in the section where
re-loading of TLUD stoves was examined. Neither she nor
her supervisors were aware of actual TLUD stove usage.</div>
</div>
</blockquote>
<div><span class="Apple-tab-span" style="white-space:pre"> </span><b
class="">[RWL4’: I think this last “Neiher” would be hard
for you to prove. CSU is closely associated with a major
stove company (that may be adding a TLUD component [ which I
have held]). CSU is more than a rank beginner on this
topic.</b></div>
<br class="">
<blockquote type="cite" class="">
<div class="">
<div text="#000000" bgcolor="#FFFFFF" class=""> They just
experimented with a substantial amount of additional fuel
and found problems, and the "second phase" was without any
MPF (migratory pyrolytic front). How many people (in
addition to you) have been misled by that part of that
research? It is better if it is ignored that to have
that approach be studied and propagated.<br class="">
</div>
</div>
</blockquote>
<div><span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space: pre;"> </span><b
class="">[RWL3: I agree on being able to add fuel with
Nat’s TLODs.</b> (Some Mulcahy videos show this.) <b
class=""> But so can any TLUD. The doctoral thesis by
Jessica Tryner covers this topic as expressed (with
unhappiness) by Paul Anderson at:</b></div>
<blockquote type="cite" class="">
<div text="#000000" bgcolor="#FFFFFF" class="">
<blockquote type="cite" class="">
<div class=""><a
href="http://www.drtlud.com/epost/re-stoves-new-handbook-for-biomass-cookstove-research-design-and-development/"
class="" moz-do-not-send="true">http://www.drtlud.com/epost/re-stoves-new-handbook-for-biomass-cookstove-research-design-and-development/</a></div>
</blockquote>
</div>
</blockquote>
<div><span class="Apple-tab-span" style="white-space:pre"> </span><b
class="">[RWL5’: On Monday, I will call Jessica. My
recollection is that they added fuel both when there was and
wasn’t an MPF. It would make sense to do so while there
was an MPF.</b></div>
<div><b class=""><span class="Apple-tab-span" style="white-space:pre"> </span>I
can’t agree on ignoring anyone’s research - and especially
Jessica’s - which I thought was quite complete (and she had
an expert as thesis advisor and some top stove people on her
doctoral committee).</b></div>
<blockquote type="cite" class=""></blockquote>
<blockquote type="cite" class="">
<div text="#000000" bgcolor="#FFFFFF" class="">
<blockquote type="cite" class=""> </blockquote>
<br class="">
And nobody has found Heath Putnam yet? He has valuable
inputs if we can find him.<br class="">
</div>
</blockquote>
<span class="Apple-tab-span" style="white-space:pre"> </span><b
class="">[RWL6’: I agree that Putnam “has valuable inputs”.
But he was claiming I believe (for awhile) that all TLUDs
operate with a central downdraft. Not your point of view I am
sure. I have looked at one of his experiments fairly closely
and will try to write on it later. I think it shows how to
distinguish TLUD from TLOD - and he didn’t see these obvious
differences.</b></div>
<div><b class=""><br class="">
</b></div>
<div><b class="">Ron<br class="">
</b>
<blockquote type="cite" class="">
<div text="#000000" bgcolor="#FFFFFF" class=""> <br class="">
Paul<br class="">
<pre class="moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu" moz-do-not-send="true">psanders@ilstu.edu</a>
Skype: paultlud Phone: +1-309-452-7072
Website: <a class="moz-txt-link-abbreviated" href="http://www.drtlud.com/" moz-do-not-send="true">www.drtlud.com</a></pre>
<div class="moz-cite-prefix">On 3/31/2018 8:17 PM, Ronal W.
Larson wrote:<br class="">
</div>
<blockquote type="cite"
cite="mid:AC999891-904D-4934-AA4D-42A91E56FD73@comcast.net"
class="">
<div class="">List and Crispin and Gordon: cc Paul, Kirk
and Andrew (in this thread)</div>
<div class=""><br class="">
</div>
<div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>See
inserts below.</div>
<div class=""><br class="">
</div>
<br class="">
<div class="">
<blockquote type="cite" class="">
<div class="">On Mar 28, 2018, at 6:10 PM, Crispin
Pemberton-Pigott <<a
href="mailto:crispinpigott@outlook.com" class=""
moz-do-not-send="true">crispinpigott@outlook.com</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="WordSection1" style="page: WordSection1;
font-family: Helvetica; font-size: 18px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal;
orphans: auto; text-align: start; text-indent:
0px; text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;">
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;"
class=""><span class="">Dear Gordon</span><span
class="" lang="EN-US"><o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;"
class=""><o:p class=""> </o:p></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;"
class="">The World Stove works very well. When
it was discussed here some years ago, I
mentioned that it appeared to be a new type of
stove. I agree that how it works is not obvious,
however I can assure you it does and that many
thousands of them have been sold.<span
class="Apple-converted-space"> </span></div>
</div>
</div>
</blockquote>
<span class="Apple-tab-span" style="white-space:pre"> </span><b
class="">RWL1: Thanks to Crispin for his additional
support that World Stove is alive and well. </b></div>
<div class=""><b class=""><br class="">
</b></div>
<div class=""><b class=""><span class="Apple-tab-span" style="white-space:pre"> </span>I
agree with Crispin that it is by no means obvious with
how the TLOD works. But I suggest that there is now
not much reason to doubt what Nat has claimed in his
successful patent. The patent is at: </b></div>
<div class=""><b class=""><a
href="https://patents.google.com/patent/US20110209698"
class="" moz-do-not-send="true"><span class="Apple-tab-span" style="white-space:pre"> </span>https://patents.google.com/patent/US20110209698</a>.
</b></div>
<div class=""><b class=""> Look especially at patent
figure item #50 in part #19 for what I consider the
main new (Venturi) feature that is not a part of any
TLUD.</b></div>
<div class=""><br class="">
<blockquote type="cite" class="">
<div class="WordSection1" style="page: WordSection1;
font-family: Helvetica; font-size: 18px; font-style:
normal; font-variant-caps: normal; font-weight:
normal; letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class=""><o:p
class=""></o:p></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class="">There
are elements of the design missing from that
drawing.</div>
</div>
</blockquote>
<div class=""><span class="Apple-tab-span" style="white-space:pre"> </span><b
class="">[RWL2: Agreed. The simple figure given by
Gordon is only vaguely similar to the many figures
in the patent. I am intentionally not re-inserting
the figure introduced by Gordon.</b></div>
<br class="">
<blockquote type="cite" class="">
<div class="WordSection1" style="page: WordSection1;
font-family: Helvetica; font-size: 18px; font-style:
normal; font-variant-caps: normal; font-weight:
normal; letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class=""><o:p
class=""></o:p></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class=""><o:p
class=""> </o:p></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class="">A
significant aspect of the design is that it can be
refueled cleanly while running, separating it from
most TLUD’s,</div>
</div>
</blockquote>
<div class=""><span class="Apple-tab-span" style="white-space:pre"> </span><b
class="">[RWL3: I agree on being able to add fuel
with Nat’s TLODs.</b> (Some Mulcahy videos show
this.) <b class=""> But so can any TLUD. The doctoral
thesis by Jessica Tryner covers this topic as
expressed (with unhappiness) by Paul Anderson at:</b></div>
<div class=""><a
href="http://www.drtlud.com/epost/re-stoves-new-handbook-for-biomass-cookstove-research-design-and-development/"
class="" moz-do-not-send="true">http://www.drtlud.com/epost/re-stoves-new-handbook-for-biomass-cookstove-research-design-and-development/</a></div>
<div class=""><b class="">which leads one to </b></div>
<div class=""><a
href="http://cleancookstoves.org/resources/517.html"
class="" moz-do-not-send="true">http://cleancookstoves.org/resources/517.html</a></div>
<div class=""><b class="">where there are multiple cites
to Dr. Tryner’s work. This (otherwise very nice)
stove overview document has nothing on TLODs and
World Stove.</b></div>
<div class=""><span class="Apple-tab-span" style="white-space:pre"> </span></div>
<br class="">
<blockquote type="cite" class="">
<div class="WordSection1" style="page: WordSection1;
font-family: Helvetica; font-size: 18px; font-style:
normal; font-variant-caps: normal; font-weight:
normal; letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class="">
at least until there is a significant accumulation
of ash at the bottom.</div>
</div>
</blockquote>
<span class="Apple-tab-span" style="white-space:pre"> </span><b
class="">[RWL4: Disagree again. Essentially no ash.
A main beauty of the TLOD is that it is virtually
impossible to burn up the produced char (unlike all
TLUDs). This is mentioned briefly in the above
patent. Nat makes a major emphasis on using the
produced char as biochar.</b></div>
<div class=""><b class=""><br class="">
</b></div>
<div class=""><b class=""><br class="">
</b></div>
<div class=""><span class="Apple-tab-span" style="font-weight: bold; white-space: pre;"> </span><b
class="">[RWL5: New topic: How much new and
additional effort by this list should go into
comparing TLUDs and TLODs?</b></div>
<div class=""><b class=""><span class="Apple-tab-span" style="white-space:pre"> </span>a)
On the one hand, Nat has a patent - and this has
presumably caused little work by others. I am not
advocating anyone trying to duplicate Nat’s work and
ignore the patent.</b></div>
<div class=""><b class=""><span class="Apple-tab-span" style="white-space:pre"> </span>b)
I admire Nat’s work, and know he has invested a lot
of time and money in its development. I don’t want to
cause him any new patent defense difficulties.
Actually I am impressed by the work of hundreds in
improving and modifying TLUDs. Is this perhaps
because there are no patent issues (that I am aware
of).</b></div>
<div class=""><b class=""><span class="Apple-tab-span" style="white-space:pre"> </span>c)
On the other hand, his work is only poorly known and
acknowledged. It seems logical that because he has a
10 year head start on everyone else, any TLOD
discussion should generally help World Stove. And Nat
has an existing manufacturing approach designed to
minimize costs that will be hard to beat. Besides the
above two issues of adding fuel and avoiding char
production, the stove is obviously very clean (but no
detailed report I am aware of) and seems to have all
the advantages of a TLUD (time saving, income
generating, etc)</b></div>
<div class=""><b class=""><span class="Apple-tab-span" style="white-space:pre"> </span>d)
(Getting agreement today to bring up this topic from
Kirk Harris), I hereby apologize to Nat if I am making
the wrong choice in encouraging others to see if they
can (while necessarily acknowledging the above patent)
strive for modifications that might convince the
patent office that another TLOD type patent is
justifiable. I am pretty sure that one can’t patent
use of the (several hundred year-old) Venturi
principle. (Nor do I see that Nat has made that
claim).</b></div>
<div class=""><b class=""><span class="Apple-tab-span" style="white-space:pre"> </span>e).
Maybe Nat can authorize (with royalties) other
manufacture and use of what he is selling.</b></div>
<div class=""><b class=""><br class="">
</b></div>
<div class=""><b class="">Ron</b></div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">
<blockquote type="cite" class="">
<div class="WordSection1" style="page: WordSection1;
font-family: Helvetica; font-size: 18px; font-style:
normal; font-variant-caps: normal; font-weight:
normal; letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class=""><o:p
class=""></o:p></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class=""><o:p
class=""> </o:p></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class="">Regards<o:p
class=""></o:p></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class="">Crispin<o:p
class=""></o:p></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;" class=""><o:p
class=""> </o:p></div>
<div class="">
<div style="margin: 0cm 0cm 0.0001pt; font-size:
11pt; font-family: Calibri, sans-serif;"
class=""><o:p class=""> </o:p></div>
<div class="">
<div style="margin: 0cm 0cm 0.0001pt; font-size:
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<div style="margin: 0cm 0cm 0.0001pt;
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sans-serif;" class="">On 28 March 2018 at
15:51, Gordon West <<a
href="mailto:gordon.west@rtnewmexico.com"
target="_blank" style="color: purple;
text-decoration: underline;" class=""
moz-do-not-send="true">gordon.west@rtnewmexico.com</a>>
wrote:<o:p class=""></o:p></div>
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<div style="margin: 0cm 0cm 0.0001pt;
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sans-serif;" class="">Is this the
downdraft stove concept being discussed?
(From the World Stove website)<o:p
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<div style="margin: 0cm 0cm 0.0001pt;
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Calibri, sans-serif;" class="">In
this depiction, I do not understand
how the feedstock that is below the
“gas” holes would ever pyrolyze,
whether updraft of downdraft, since
no air would be passing through it.<o:p
class=""></o:p></div>
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<p class="MsoNormal" style="margin: 0cm 0cm
12pt; font-size: 11pt; font-family:
Calibri, sans-serif;">Good find Gordon, I
had heard Nat talking over the table about
this but never seen a schematic, I'm
tending toward being sceptical.<o:p
class=""></o:p></p>
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<div style="margin: 0cm 0cm 0.0001pt;
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