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<div class="moz-cite-prefix">Dear Michael and Rebecca,<br>
<br>
The suggestion by Otto and myself about using TLUD technology is
NOT referring to the cooking stoves specifically, but refers to
the <br>
<blockquote type="cite"><font size="2" face="Arial">the use of
primative</font>
<div><font size="2" face="Arial">pit kilns and their pollution.</font></div>
</blockquote>
<br>
In the pit kilns, they are already wasting the heat. A simple
TLUD could also waste the heat, AND avoid the pollution.<br>
<br>
There is every reason for Rebecca to make a simple TLUD just to
see that the char can be made for cooking in charcoal stoves. <br>
<br>
THEN, people could start to consider TLUD stoves, especially the
TChar designs that couple with the charcoal stoves.<br>
<br>
ALSO, when char is easily and cleanly made, the prospect of using
some of that char to improve poor soils could become of interest.<br>
<br>
Paul<br>
<pre class="moz-signature" cols="72">Paul S. Anderson, PhD aka "Dr TLUD"
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>
On 6/16/2013 5:52 AM, mtrevor wrote:<br>
</div>
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cite="mid:9A6A6C4EDC87450FAE32964F48760F1A@HP29397140882"
type="cite">
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<div><font size="2" face="Arial">Rebecca has primarily worked with
fired clay rocket stoves.</font></div>
<div><font size="2" face="Arial">We were discussing the use of
various parts of the cocnut as alternative fuels</font></div>
<div><font size="2" face="Arial">In the Philipines they have a
fairly well developen market for various cocnut products as
fuel</font></div>
<div><font size="2" face="Arial">In particulat they have wide
spread fired clay charcoal burners. She had commented on the
use of primative</font></div>
<div><font size="2" face="Arial">pit kilns and their pollution/ I
pointed her toward Amy Smiths work hopefully to reduce some
polluion</font></div>
<div> </div>
<div><font size="2" face="Arial">Moving into retorts or TLUD unit
may be in the future but I beleive for now she is going to be
expanding her</font></div>
<div><font size="2" face="Arial">rocket stove capabilities. I am
glad to see other picking up on Rebacca's travails</font></div>
<div> </div>
<div><font size="2" face="Arial">I am not much into charcoal until
I can find a effective use for its heat and smoke, maybe a
copra dryer.</font></div>
<div><font size="2" face="Arial">. </font></div>
<div> </div>
<div><font size="2" face="Arial">Michael </font></div>
<div><font size="2" face="Arial">Marshall Islands</font></div>
<div> </div>
<div> </div>
<div> </div>
<div>--- Original Message ----- </div>
<blockquote style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT:
5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"
dir="ltr">
<div style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color:
black"><b>From:</b> <a moz-do-not-send="true"
title="terra-matricula@hotmail.com"
href="mailto:terra-matricula@hotmail.com">Otto Formo</a> </div>
<div style="FONT: 10pt arial"><b>To:</b> <a
moz-do-not-send="true"
title="stoves@lists.bioenergylists.org"
href="mailto:stoves@lists.bioenergylists.org">Stoves
Bioenergylist</a> </div>
<div style="FONT: 10pt arial"><b>Cc:</b> <a
moz-do-not-send="true" title="jonnygms@gmail.com"
href="mailto:jonnygms@gmail.com">Jon Anderson</a> </div>
<div style="FONT: 10pt arial"><b>Sent:</b> Sunday, June 16, 2013
10:13 PM</div>
<div style="FONT: 10pt arial"><b>Subject:</b> Re: [Stoves]
coconut usage in improved stoves</div>
<div><br>
</div>
<div dir="ltr">Rebecca,<br>
Haveing tested briquettes made out of rice husks and sawdust
in a gasifier unit (Natural Draft), we experienced the same
challenge to ignite and creating the pyrolytic front.<br>
<br>
I would suggest you create an upper layer of woodchips, on top
of your coconutshells, to create that pyrolytic front more
easily and ignite the chips, using woodshaveings or even gras,
as a starter. <br>
<br>
REMEMBER: <br>
Do not pour liquid materials, like kerosine , directly into
the fueling Chamber!<br>
This will distrub the pyrolytic process and reduce the outcome
of your charcoal or biochar production.<br>
<br>
Good Luck.<br>
<br>
Thanks<br>
<br>
Otto<br>
<div>
<hr id="stopSpelling"> Date: Sat, 15 Jun 2013 23:03:35 -0500<br>
From: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a><br>
To: <a class="moz-txt-link-abbreviated" href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><br>
CC: <a class="moz-txt-link-abbreviated" href="mailto:jonnygms@gmail.com">jonnygms@gmail.com</a><br>
Subject: Re: [Stoves] coconut usage in improved stoves<br>
<br>
<div class="ecxmoz-cite-prefix">Rebecca,<br>
<br>
To make your oling (coconut shell charcoal), the TLUD
technology is highly appropriate. The density of the
shell pieces makes them slightly difficult to initially
light (the same as with densified wood pellets). But
just make a slightly larger and longer burning "starter
fire" to get the initial layer of pyrolyzing biomass that
becomes the pyrolytic front that migrates slowly down
through the column of shell pieces.<br>
<br>
How familiar are you with the TLUD technology?<br>
<br>
Paul<br>
<pre class="ecxmoz-signature">Paul S. Anderson, PhD aka "Dr TLUD"
Email: <a moz-do-not-send="true" class="ecxmoz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a> Skype: paultlud Phone: +1-309-452-7072
Website: <a moz-do-not-send="true" class="ecxmoz-txt-link-abbreviated" href="http://www.drtlud.com" target="_blank">www.drtlud.com</a></pre>
On 6/15/2013 12:48 AM, Rebecca A. Vermeer wrote:<br>
</div>
<blockquote
cite="mid:B62FC8A13BAA430E939760624F62E439@RebeccaHP">
<style><!--
--></style>
<div dir="ltr">
<div style="FONT-FAMILY: 'Calibri'; COLOR: rgb(0,0,0);
FONT-SIZE: 12pt">
<div>Michael,</div>
<div>I am so pleased to meet an ex copra maker and one
who knows the coconut so well!! So I presume you
know very well the native “tuba” drink from the
flower shoot? Do take a look at my photo album
below :</div>
<div> </div>
<p style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt"
class="ecxMsoNormal"><a moz-do-not-send="true"
href="https://plus.google.com/photos/113101643783889350444/albums/5889511496280160113/5889528293743607618?pid=5889528293743607618&oid=113101643783889350444"
target="_blank"><font style="FONT-SIZE: 11pt"
color="#0000ff">https://plus.google.com/photos/113101643783889350444/albums/5889511496280160113/5889528293743607618?pid=5889528293743607618&oid=113101643783889350444</font></a></p>
<div>– you will see the coconut husk (bucong) strung
together; your preferred frond mid ribs (palwa) and
the charcoal from coconut shells (inside sacks and
plastic bags). The charcoal makers are my biggest
competitors for the bucong I need to fire my
eco-kalans. Take a close look at photo #37 -the
small pottery to the right which looks like a vase
uses “oling” or coconut shell charcoal; to the left
you will find the big traditional kalans which can
use firewood, “palwa” or “bucong”. The “bucong” is
the fuel of the poorest and the “bingka” or rice
cake bakers; the “palwa” is bought by the not so
poor; firewood by the middleclass; and the “oling
“ is bought by the many food vendors (like “tocinos”
– similar to sate in Malaysia or Indonesia, steamed
meat buns, boiling water for disinfecting spoons
& forks....) and households for broiling fish
and meats (sinugba).</div>
<div> </div>
<div>Oling is made by burning coconut shellls in a
hole in the ground –a smoky process with a lot of
energy going to waste. Do you know a better way??</div>
<div> </div>
<div>Rebecca </div>
<div>
<div style="FONT: 10pt tahoma; font-size-adjust:
none; font-stretch: normal">
<div style="BACKGROUND: rgb(245,245,245)">
<div><b>From:</b> <a moz-do-not-send="true"
title="mtrevor@ntamar.net"
href="mailto:mtrevor@ntamar.net">mtrevor</a>
</div>
<div><b>Sent:</b> Friday, June 14, 2013 12:31 PM</div>
<div><b>To:</b> <a moz-do-not-send="true"
title="stoves@lists.bioenergylists.org"
href="mailto:stoves@lists.bioenergylists.org">Discussion
of biomass cooking stoves</a> </div>
<div><b>Subject:</b> [Stoves] coconut usage in
improved stoves</div>
</div>
</div>
<div> </div>
</div>
<div style="FONT-STYLE: normal; DISPLAY: inline;
FONT-FAMILY: 'Calibri'; COLOR: rgb(0,0,0);
FONT-SIZE: small; FONT-WEIGHT: normal;
TEXT-DECORATION: none">
<div><font size="2" face="Arial">Dear <font
size="3" face="Times New Roman">Rebecca </font></font></div>
<div><font size="2" face="Arial">As an ex copra
maker I have met the coconut and know it well.</font></div>
<div>
<div><font size="2" face="Arial">I have made copra
by the tons. <font size="2" face="Arial">I
know coconut husk and flower shoot and
fronds and shell </font>
<div><font size="2" face="Arial">Here the
husks are generally burned in 3/4/5 wedge
sized pieces. After the nuts are husked
<div><font size="2" face="Arial">women
haul them in from the husking areas
and sun dry them in the yards. It is
exhausting back breaking work</font></div>
<div><font size="2" face="Arial">Husk is a
pretty good mosquito chaser and its
low burn temperature make it very good
for cooking rice.</font></div>
<div>BUT THE SMOKE!!!!</div>
<div> </div>
<div><font size="2" face="Arial">I would
like to see a retort system running
heat to a copra drier to produce
better copra with out bugs and mold</font></div>
<div><font size="2" face="Arial">with </font><font
size="2" face="Arial">coconut shell
charcoal for sale as a by product.
<div><font size="2" face="Arial">In
more recent years the has been
some switch to your "bucong" of
course this mean no more shell
left over. </font> </div>
</font><font size="2" face="Arial">Splitting
husk with shell in to multiple little
wedges would </font><font size="2"
face="Arial">be considered a lot of
additional work. Coconut husk it tough
stuff. </font><font size="2"
face="Arial">I find slicing off the
leaflets in the field and </font><font
size="2" face="Arial">using the
coconut frond mid rib chopped into
segments and split length wise </font><font
size="2" face="Arial">easier. The
resulting stick like </font><font
size="2" face="Arial">pieces feed into
a rocket stove easier. The f</font><font
size="2" face="Arial">lower spaths are
superb rocket stove fuel.</font></div>
</font> </div>
<div> </div>
</font></div>
<div><font size="2" face="Arial">Michael</font></div>
<div><font size="2" face="Arial">Marshall Islands</font></div>
<div> </div>
<div>----- Original Message ----- </div>
</div>
<blockquote style="BORDER-LEFT: rgb(0,0,0) 2px
solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px;
MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px" dir="ltr">
<div style="FONT: 10pt arial; BACKGROUND:
rgb(228,228,228); font-size-adjust: none;
font-stretch: normal"><b>From:</b> <a
moz-do-not-send="true"
title="ravermeer@telus.net"
href="mailto:ravermeer@telus.net">Rebecca A.
Vermeer</a> </div>
<div style="FONT: 10pt arial; font-size-adjust:
none; font-stretch: normal"><b>To:</b> ; <a
moz-do-not-send="true"
title="mtrevor@ntamar.net"
href="mailto:mtrevor@ntamar.net">Michael N.
Trevor</a> </div>
<div style="FONT: 10pt arial; font-size-adjust:
none; font-stretch: normal"><b>Cc:</b> <a
moz-do-not-send="true"
title="ravermeer@telus.net"
href="mailto:ravermeer@telus.net">Rebecca A.
Vermeer</a> ; <a moz-do-not-send="true"
title="jonnygms@gmail.com"
href="mailto:jonnygms@gmail.com">Jon Anderson</a>
</div>
<div style="FONT: 10pt arial; font-size-adjust:
none; font-stretch: normal"><b>Sent:</b>
Saturday, June 15, 2013 6:30 AM</div>
<div style="FONT: 10pt arial; font-size-adjust:
none; font-stretch: normal"><b>Subject:</b> Re:
[Stoves] : Re: Insulation and stove life</div>
<div> </div>
<div dir="ltr">
<div style="FONT-FAMILY: 'Calibri'; COLOR:
rgb(0,0,0); FONT-SIZE: 12pt">
<div>Hello Michael,</div>
<div>Thank you for your suggestions and
question. My comments are as follows:</div>
<div>1. I have considered experimenting with
high silicate ash from the foot of Mt.
Canlaon, in northern part of Negros
Oriental. The ash is free and my partners
with the 11th IB of the Philippine Army in
Negros Or. and the Memorial Elementary
School in Canlaon would bring the ash to
Dumaguete City. If this does not work, I’ll
follow up on the TLUD route.</div>
<div> </div>
<div>2. Jon & Flip Anderson (Aprovecho
volunteers) have shown me their work with
insulating bricks to form the combustion
chamber in Timor Leste. The insulating
bricks are weak, fragile bricks which
require a strong, heavy duty shell exterior
(e.g. cement)to protect the combustion
chamber and to support big cooking pots. I
still think that tiny insulating “clay
marbles” between the heavy duty, all clay,
fired kalan and combustion chamber is the
most practical way to pursue. I am hopeful
Rolf and ECOWORXX can find a way to produce
these insulating clay marbles or pebbles
cheaply.</div>
<div> </div>
<div>3. For those who have not seen a coconut
husk – it is a by-product of COPRA (mature
coconut meat) production. Every 3 months,
the coconuts are harvested, cut into 2
halves, and meat is extracted and dried to
make copra. The husk and inside shell is
dried in roof-covered sheds or storage
buildings to make “bucong” – the fuel we use
to fire the eco-kalans to 900 degrees
Celsius. To use the “bucong” or coconut
husk with shell for fuel in a rocket stove,
it is requires chopping the husk with a
machete into narrow wedges (like a
cantaloupe) and a combustion chamber
opening as wide and as high (5.5”x5.5”) as
that of the eco-kalan.</div>
<div> </div>
<div style="FONT-STYLE: normal; DISPLAY:
inline; FONT-FAMILY: 'Calibri'; COLOR:
rgb(0,0,0); FONT-SIZE: small; FONT-WEIGHT:
normal; TEXT-DECORATION: none">
<div style="FONT: 10pt tahoma;
font-size-adjust: none; font-stretch:
normal">
<div><font size="3" face="Calibri">Rebecca
Vermeer</font></div>
<div><font size="3" face="Calibri">Eco-Kalan
Project in the Philippines</font></div>
<div><font size="3" face="Calibri">British
Columbia, Canada</font></div>
<div> </div>
<div style="BACKGROUND: rgb(245,245,245)">
<div><b>From:</b> <a
moz-do-not-send="true"
title="mtrevor@ntamar.net"
href="mailto:mtrevor@ntamar.net">mtrevor</a>
</div>
<div><b>Sent:</b> Friday, June 14, 2013
1:44 AM</div>
<div><b>To:</b> <a
moz-do-not-send="true"
title="stoves@lists.bioenergylists.org"
href="mailto:stoves@lists.bioenergylists.org">Discussion of biomass
cooking stoves</a> </div>
<div><b>Subject:</b> Re: [Stoves] : Re:
Insulation and stove life</div>
</div>
</div>
<div> </div>
</div>
<div style="FONT-STYLE: normal; DISPLAY:
inline; FONT-FAMILY: 'Calibri'; COLOR:
rgb(0,0,0); FONT-SIZE: small; FONT-WEIGHT:
normal; TEXT-DECORATION: none">
<div><font size="2" face="Arial">Rebecca </font></div>
<div><font size="2" face="Arial">Why not
gassify rice hulls in a TLUD and then
use the low cristobalite "tough" high
silicate ash to mix your insulation. </font></div>
<div><font size="2" face="Arial">Perhaps
take a lead fom Aprovecho's play book
and fire your liner in multiple wedge
shaped pieces negating the need to break</font></div>
<div><font size="2" face="Arial">things up.
</font></div>
<div> </div>
<div>How do to "prepare" your coconut husks
for use in a rocket stove? </div>
<div> </div>
<div>Michael N Trevor</div>
<div>Marshall Islands</div>
<blockquote style="BORDER-LEFT: rgb(0,0,0)
2px solid; PADDING-LEFT: 5px;
PADDING-RIGHT: 0px; MARGIN-LEFT: 5px;
MARGIN-RIGHT: 0px" dir="ltr">
<div style="FONT: 10pt arial; BACKGROUND:
rgb(228,228,228); font-size-adjust:
none; font-stretch: normal"><b>From:</b>
<a moz-do-not-send="true"
title="ravermeer@telus.net"
href="mailto:ravermeer@telus.net">Rebecca
A. Vermeer</a> </div>
<div style="FONT: 10pt arial;
font-size-adjust: none; font-stretch:
normal"><b>To:</b> <a
moz-do-not-send="true"
title="paul.olivier@esrla.com"
href="mailto:paul.olivier@esrla.com">Paul
Olivier</a> </div>
<div style="FONT: 10pt arial;
font-size-adjust: none; font-stretch:
normal"><b>Cc:</b> <a
moz-do-not-send="true"
title="jonnygms@gmail.com"
href="mailto:jonnygms@gmail.com">Jon
Anderson</a> ; <a
moz-do-not-send="true"
title="stoves@lists.bioenergylists.org"
href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>
</div>
<div style="FONT: 10pt arial;
font-size-adjust: none; font-stretch:
normal"><b>Sent:</b> Friday, June 14,
2013 8:25 PM</div>
<div style="FONT: 10pt arial;
font-size-adjust: none; font-stretch:
normal"><b>Subject:</b> Re: [Stoves] :
Re: Insulation and stove life</div>
<div> </div>
<div dir="ltr">
<div style="FONT-FAMILY: 'Calibri';
COLOR: rgb(0,0,0); FONT-SIZE: 12pt">
<div>Paul,</div>
<div>I currently use wood ash as
insulating material between the
kalan and combustion chamber of the
eco-kalan (a rocket stove using
wood, charcoal, coconut husk, shell,
fronds and other parts of the
coconut tree). The eco-kalan uses
75-85% less firewood and therefore a
lot less ash is produced compared to
traditional kalans and other
traditional cookstoves in Negros
Oriental, Philippines. A shortage
in supply of ash is one fact
<div> </div>
or which affects sales of
eco-kalan. I have considered
making an insulating material using
a 50-50 mix by volume of rice hull
& clay in the form of pellets or
bricks which would be broken to
pieces after firing. I would fire
the pellets or the bricks along with
the eco-kalans up to 900 degrees
Celsius. Will there be significant
formation of cristobalite under
these conditions? Would handling
the fired pellets or the breaking of
the bricks be a health hazard?
Thanks,</div>
<div> </div>
<div>Rebecca Vermeer</div>
<div style="FONT-STYLE: normal;
DISPLAY: inline; FONT-FAMILY:
'Calibri'; COLOR: rgb(0,0,0);
FONT-SIZE: small; FONT-WEIGHT:
normal; TEXT-DECORATION: none">
<div style="FONT: 10pt tahoma;
font-size-adjust: none;
font-stretch: normal">
<div> </div>
<div style="BACKGROUND:
rgb(245,245,245)">
<div><b>From:</b> <a
moz-do-not-send="true"
title="paul.olivier@esrla.com"
href="mailto:paul.olivier@esrla.com">Paul Olivier</a> </div>
<div><b>Sent:</b> Friday, June
14, 2013 12:07 AM</div>
<div><b>To:</b> <a
moz-do-not-send="true"
title="ravermeer@telus.net"
href="mailto:ravermeer@telus.net">Rebecca A. Vermeer</a> </div>
<div><b>Cc:</b> <a
moz-do-not-send="true"
title="jonnygms@gmail.com"
href="mailto:jonnygms@gmail.com">Jon
Anderson</a> ; <a
moz-do-not-send="true"
title="stoves@lists.bioenergylists.org"
href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>
; <a moz-do-not-send="true"
title="larryw@gotsky.com"
href="mailto:larryw@gotsky.com">larry
winiarski</a> </div>
<div><b>Subject:</b> Re: Fw:
[Stoves] : Re: Insulation and
stove life</div>
</div>
</div>
<div> </div>
</div>
<div style="FONT-STYLE: normal;
DISPLAY: inline; FONT-FAMILY:
'Calibri'; COLOR: rgb(0,0,0);
FONT-SIZE: small; FONT-WEIGHT:
normal; TEXT-DECORATION: none">Rebecca,<br>
If we directly burn river hulls,
there should be a lot of
cristobalite formed. If we gasify,
this problem should be minimized,
provided channeling does not occur.
Also there might be cristobalite in
the particulate matter in the
combustion gases. With rice hull
pellets in a TLUD we have a lot
less channeling, and a lot less
particulate matter. Therefore the
rice hull pellet becomes an
attractive fuel for these and many
other reasons.<br>
Thanks.<br>
Paul Olivier<br>
<div class="ecxgmail_quote">On Jun
14, 2013 1:44 PM, "Rebecca A.
Vermeer" <<a
moz-do-not-send="true"
href="mailto:ravermeer@telus.net">ravermeer@telus.net</a>>
wrote:<br>
<blockquote style="BORDER-LEFT:
rgb(204,204,204) 1px solid;
MARGIN: 0px 0px 0px 0.8ex;
PADDING-LEFT: 1ex"
class="ecxgmail_quote">
<div dir="ltr">
<div dir="ltr">
<div style="FONT-FAMILY:
'Calibri'; FONT-SIZE:
12pt">
<div>Hello Paul,</div>
<div>Larry just told me
that the silica content
of rice hull ash is over
90%. At the ETHOS 2013
Conference, I saw a
TURBO stove developed in
the Philippines which
used rice hull for
fuel. Given your
comment below regarding
cristobalite “which is a
nasty carcinogen” and
severely hazardous to
human health (see link
below), would you
recommend the use of
rice hull as a household
fuel for cookstoves? </div>
<div> </div>
<div>Rebecca Vermeer</div>
<div> </div>
<div>CRISTOBALITE LINK:</div>
<div><a
moz-do-not-send="true"
title="http://nj.gov/health/eoh/rtkweb/documents/fs/1657.pdf"
href="http://nj.gov/health/eoh/rtkweb/documents/fs/1657.pdf"
target="_blank">http://nj.gov/health/eoh/rtkweb/documents/fs/1657.pdf</a></div>
<div>
<div style="FONT-STYLE:
normal; DISPLAY:
inline; FONT-FAMILY:
'Calibri'; FONT-SIZE:
small; FONT-WEIGHT:
normal;
TEXT-DECORATION: none"> </div>
</div>
<div>
<div style="FONT-STYLE:
normal; DISPLAY:
inline; FONT-FAMILY:
'Calibri'; FONT-SIZE:
small; FONT-WEIGHT:
normal;
TEXT-DECORATION: none"><b>From:</b>
<a
moz-do-not-send="true"
title="paul.olivier@esrla.com" href="mailto:paul.olivier@esrla.com"
target="_blank">Paul
Olivier</a> </div>
<div style="FONT: 10pt
tahoma;
font-size-adjust:
none; font-stretch:
normal">
<div
style="BACKGROUND:
rgb(245,245,245)">
<div><b>Sent:</b>
Wednesday, June
12, 2013 12:01 AM</div>
<div><b>To:</b> <a
moz-do-not-send="true" title="stoves@lists.bioenergylists.org"
href="mailto:stoves@lists.bioenergylists.org"
target="_blank">Discussion
of biomass
cooking stoves</a>
</div>
<div><b>Subject:</b>
Re: [Stoves] : Re:
Insulation and
stove life</div>
</div>
</div>
<div> </div>
</div>
<div style="FONT-STYLE:
normal; DISPLAY: inline;
FONT-FAMILY: 'Calibri';
FONT-SIZE: small;
FONT-WEIGHT: normal;
TEXT-DECORATION: none">
<div dir="ltr">
<div>
<div>
<div>
<div>Paal,<br>
<br>
</div>
One thing I look
for on my burner
is that all
burner holes
support a flame
throughout the
process. If
channeling
occurs during
the process or
if char is being
burned as the
process comes to
a close, then
one can see
burner holes
that do not
support a flame.
This means that
CO2 is being
discharged from
the burner
holes, and of
course CO2 does
not burn. When
CO2 is formed,
this represents
a big
inefficiency,
since combustion
takes place far
below the pot.
When this
happens the
sides of the
reactor can
easily turn red
hot and melt. I
do not know how
it is possible
to spot the
presence of CO2
if the top of
the reactor
stays open and
does not have a
lid with burner
holes.<br>
<br>
</div>
If one turns up
the fan a bit too
high resulting in
channeling, it can
happen that only a
few holes (among a
total of 80 in my
case) do not
support a flame.
If I turn the fan
down a bit and
shake the reactor,
this problem is
immediately
corrected. Also
the effect of the
presence of CO2
can be spotted by
the cook in
another way. The
distribution of
heat to the pan is
not even.<br>
<br>
</div>
<div>Also many of
the positive
characteristics of
biochar are lost
when biochar is
combusted and is
reduced to ash.
The combustion of
biomass and
biochar takes
place when
channeling occurs,
and the combustion
of biochar takes
place if the fan
is not turned off
at the end of the
process. Rice hull
ash and rice hill
biochar are not at
all the same thing
when it comes to
growing plants. <font
color="#ff0000">Also
rice hull ash
can easily
contain
cristobalite,
which is a nasty
carcinogen.
Under ordinary
conditions, no
farmer should be
handling this
stuff.<br>
</font></div>
<div> </div>
Thanks.<br>
</div>
Paul<br>
<div
class="ecxgmail_extra"><br>
<br>
<div
class="ecxgmail_quote">On
Wed, Jun 12, 2013
at 1:06 PM, Paal
Wendelbo <span
dir="ltr"><<a
moz-do-not-send="true" href="mailto:paaw@online.no" target="_blank">paaw@online.no</a>></span>
wrote:<br>
<blockquote
style="BORDER-LEFT:
rgb(204,204,204)
1px solid;
MARGIN: 0px 0px
0px 0.8ex;
PADDING-LEFT:
1ex"
class="ecxgmail_quote">
<div dir="ltr">
<div dir="ltr">
<div
style="FONT-FAMILY:
'Calibri';
FONT-SIZE:
12pt">
<p
style="LINE-HEIGHT:
13pt; MARGIN:
0cm 0cm 10pt"
class="ecxMsoNormal"><span lang="EN-US"><font style="FONT-SIZE: 11pt">Ron</font></span></p>
<p
style="LINE-HEIGHT:
13pt; MARGIN:
0cm 0cm 10pt"
class="ecxMsoNormal"><span lang="EN-US"><font style="FONT-SIZE: 11pt">By
end of flame
the color of
the char is
red to yellow,
that indicate
a temperature
of 700 to 800
˚C and when
there is no
smoke,
complete
combustion has
taken place.
Is that not
good for
biochar?</font></span></p>
<p
style="LINE-HEIGHT:
13pt; MARGIN:
0cm 0cm 10pt"
class="ecxMsoNormal"><span lang="EN-US"><font style="FONT-SIZE: 11pt">Regards
Paal W</font></span></p>
</div>
</div>
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</pre>
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<pre wrap="">_______________________________________________
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