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<div class="moz-cite-prefix">Stovers,<br>
<br>
I again forward to you the excellent response by Paal Wendelbo.
His experiences are awesome and trump many declarations about
grass and straw as TLUD fuel.<br>
<br>
1. Some TLUD-knowing stovers need to conduct re-confirmation
(verification) testing. I have confidence that those who have
the TLUDs known as Peko Pe, Champion, Mwoto, and Quad should be
able to replicate and report results. We also would like to know
the results from doing this in any of the other TLUDs and their
variations. The diameters of 160 mm and 180 mm are 6.3 to 7
inches, which is quite typical of the residential-sized TLUDs.<br>
<br>
2. I request some assistance for all of us to have access
digitally to the pictures and notes that Paal has from northern
Uganda. The best way is to have someone work with Paal to gather
the items, and to have them scanned and distributed at the Stoves
Website, at drtlud.com and at other sites. For this we need the
following:<br>
A. Paal to give us some indication of the amount of
materials, and perhaps some estimate of costs to do the digitizing
in Norway.<br>
B. Anyone in Norway who could assist with the preparations,
etc.<br>
C. Volunteers to cover the costs of the digitizing,
etc. I will contribute.<br>
<br>
I hope that we see some action about this.<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 8/25/2013 2:24 PM, Paal Wendelbo wrote:<br>
</div>
<blockquote cite="mid:4BCBA2B14D694F31B393D38C83E823F1@PaalPC"
type="cite">
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<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR:
#000000">
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt; LINE-HEIGHT:
13pt"><span lang="EN-US"><font style="FONT-SIZE: 11pt">Dear
Paul A</font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt; LINE-HEIGHT:
13pt"><span lang="EN-US"><font style="FONT-SIZE: 11pt">It is
more than 20 years ago I first made this tests with
grass as fuel in a refugee camp in Malawi. Some refugees
cleared a land and piled it up and put fire on it. A lot
of smoke arise for hours around the whole area. I took
2kg grass and weeds of different types, made a Peko Pe
from a 2o liters tin, stamped it round a 50mm stick in
the middle and was boiling 3 liter of water for more
than an hour without any smoke. All my notes from that
time were lost so I can’t go into details. By I have
tried it several times and it works later and it works.
</font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt; LINE-HEIGHT:
13pt"><span lang="EN-US"><font style="FONT-SIZE: 11pt">Grass
and weeds can be stamped into a TLUD-ND with a draft
hole in the middle. Straw, reeds and papyrus has to be
cut in length of the combustion chamber and placed
vertical and loose. The especial with grass and straw is
it doesn’t collapse when flame is ended, and the pot
comes close the glowing mass with high enough
temperature for still cooking. The time of flame and
glowing is almost the same. The diameter of the stoves
160 mm for straw and 180 mm for grass.</font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt; LINE-HEIGHT:
13pt"><span lang="EN-US"><font style="FONT-SIZE: 11pt">I
remember we used straw for melting aluminum for making
pots and did some small scale blacksmithing with
papyrus. A 10mm iron bar was yellow/white after few
minutes into the glowing.</font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt; LINE-HEIGHT:
13pt"><span lang="EN-US"><font style="FONT-SIZE: 11pt">I
still have some pictures and d notes from North of
Uganda, but not electronic, but they can be copied if
some are interested. At that time there was very little
attention to that type of work, mostly due to the
charcoal business.</font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt; LINE-HEIGHT:
13pt"><span lang="EN-US"><font style="FONT-SIZE: 11pt">With
regards Paal W </font></span></p>
<div style="FONT-SIZE: small; FONT-FAMILY: 'Calibri';
FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal;
TEXT-DECORATION: none; DISPLAY: inline">
<div style="FONT: 10pt tahoma">
<div> </div>
<div style="BACKGROUND: #f5f5f5">
<div style="font-color: black"><b>From:</b> <a
moz-do-not-send="true" title="psanders@ilstu.edu"
href="mailto:psanders@ilstu.edu">Paul Anderson</a> </div>
<div><b>Sent:</b> Saturday, August 24, 2013 8:23 PM</div>
<div><b>To:</b> <a moz-do-not-send="true"
title="paaw@online.no" href="mailto:paaw@online.no">Paal
Wendelbo</a> </div>
<div><b>Cc:</b> <a moz-do-not-send="true"
title="janithjc@gmail.com"
href="mailto:janithjc@gmail.com">janitha chandimal</a>
; <a moz-do-not-send="true"
title="stoves@lists.bioenergylists.org"
href="mailto:stoves@lists.bioenergylists.org">Discussion
of biomass cooking stoves</a> ; <a
moz-do-not-send="true" title="psanders@ilstu.edu"
href="mailto:psanders@ilstu.edu">Doc Anderson</a> </div>
<div><b>Subject:</b> Re: Grass Gasification</div>
</div>
</div>
<div> </div>
</div>
<div style="FONT-SIZE: small; FONT-FAMILY: 'Calibri';
FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal;
TEXT-DECORATION: none; DISPLAY: inline">
<div class="moz-cite-prefix">Stovers,<br>
<br>
I am forwarding a message from Paal Wendelbo this is quite
informative about pyrolysis of grass fuel in his Peko
Pe. It should apply to all true TLUD stoves with full
diameter access to the fuel chamber.<br>
<br>
I now ask Paal: Please discuss the "grasses". There
are so many types. Do your comments / experiences relate
to certain types (such as those with nice stiff stems,
which species??) more than to other types of wavy / leafy
grasses?<br>
<br>
Also, the diameter of you stove is important to get 1/2 kg
in a bundle that is 20 cm tall. Did you have stoves
with different diameters?<br>
<br>
Very important info you gave about difficulties when the
grasses are simply packed in (not in bundles of vertical
stems).<br>
<br>
Paul<br>
<pre class="moz-signature" cols="72">Paul S. Anderson, PhD aka "Dr TLUD"
Email: <a moz-do-not-send="true" class="moz-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="moz-txt-link-abbreviated" href="http://www.drtlud.com">www.drtlud.com</a></pre>
On 8/23/2013 3:09 AM, Paal Wendelbo wrote:<br>
</div>
<blockquote
cite="mid:5A6A203598D24A9AA7B4DE149ED82124@PaalPC"
type="cite">
<div dir="ltr">
<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri';
COLOR: #000000">
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt;
LINE-HEIGHT: 13pt"><span lang="EN-US"><font
style="FONT-SIZE: 11pt">Dear </font><em><span
style="FONT-FAMILY: ; mso-ascii-theme-font:
minor-latin; mso-hansi-theme-font:
minor-latin; mso-bidi-font-family: 'Times New
Roman'; mso-bidi-theme-font: minor-bidi;
mso-bidi-font-weight: bold"><font
style="FONT-SIZE: 11pt">Janitha Bandara</font></span></em><em><span
style="FONT-FAMILY: ; mso-ascii-theme-font:
minor-latin; mso-hansi-theme-font:
minor-latin; mso-bidi-font-family: 'Times New
Roman'; mso-bidi-theme-font: minor-bidi;
mso-bidi-font-weight: bold;
mso-bidi-font-style: italic"></span></em></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt;
LINE-HEIGHT: 13pt"><span><font style="FONT-SIZE:
11pt">Thanks for mail. I can’t say I have done
any </font><font style="FONT-SIZE: 11pt">gasification
researches for grasses<span style="FONT-FAMILY:
; mso-ascii-theme-font: minor-latin;
mso-hansi-theme-font: minor-latin;
mso-bidi-font-family: 'Times New Roman';
mso-bidi-theme-font: minor-bidi;
mso-bidi-font-weight: bold">, but In have done
a lot of practical use of straw ( hyperrenia
rufa) as fuel for household cooking in Uganda
in 1995, with the Peko Pe TLUIFD-ND stove. We
found the best way to utilize the straw was to
cut it to the height of the stove, 200 mm,
made it into bundles of ½ a kg and put it into
the stove. The bundles was burning nicely
without smoke for about 20 minutes on the
flame and another 20 minutes on the glowing
since the glowing straw did not collapse like
other types of fuel</span></font><span
style="FONT-FAMILY: ; mso-ascii-theme-font:
minor-latin; mso-hansi-theme-font: minor-latin;
mso-bidi-font-family: 'Times New Roman';
mso-bidi-theme-font: minor-bidi;
mso-bidi-font-weight: bold; mso-bidi-font-style:
italic"><font style="FONT-SIZE: 11pt">. </font></span></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt;
LINE-HEIGHT: 13pt"><span><font style="FONT-SIZE:
11pt">You have a nice clean flame on the
generator, probably a bit too high, depend what
kind of use</font><font style="FONT-SIZE: 11pt"><em>
</em>it is designed for. I should like to know
more about the aim of the construction. Is it to
produce gas or to produce energy for something
else?</font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt;
LINE-HEIGHT: 13pt"><span style="FONT-FAMILY: ;
mso-ascii-theme-font: minor-latin;
mso-hansi-theme-font: minor-latin;
mso-bidi-font-family: 'Times New Roman';
mso-bidi-theme-font: minor-bidi;
mso-bidi-font-weight: bold; mso-bidi-font-style:
italic" lang="EN-US"><font style="FONT-SIZE: 11pt">Regarding
I insulation, be aware of higher temperature
will strain the metal in the combustion chamber,
air could be better with double function, cool
down the temperature <span style="mso-spacerun:
yes"> </span>on the metal and the same time
preheat secondary air.</font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 10pt;
LINE-HEIGHT: 13pt"><span style="FONT-FAMILY: ;
mso-ascii-theme-font: minor-latin;
mso-hansi-theme-font: minor-latin;
mso-bidi-font-family: 'Times New Roman';
mso-bidi-theme-font: minor-bidi;
mso-bidi-font-weight: bold; mso-bidi-font-style:
italic" lang="EN-US"><font style="FONT-SIZE: 11pt">If
you stamp grass into the generatorto prolong the
process, there will be a problem of air going
through, a 50 mm vertical channel in the middle
will solve the problem.</font></span></p>
<div style="FONT-SIZE: small; FONT-FAMILY: 'Calibri';
FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE:
normal; TEXT-DECORATION: none; DISPLAY: inline">
<div style="FONT: 10pt tahoma">
<div><font size="3" face="Calibri">With regards
Paal W. <a href="mailto:paaw@online.no"
moz-do-not-send="true">paaw@online.no</a></font></div>
<div style="BACKGROUND: #f5f5f5">
<div style="font-color: black"><b>From:</b> <a
title="janithjc@gmail.com"
href="mailto:janithjc@gmail.com"
moz-do-not-send="true">janitha chandimal</a>
</div>
<div><b>Sent:</b> Wednesday, August 21, 2013
11:32 AM</div>
<div><b>To:</b> <a title="paaw@online.no"
href="mailto:paaw@online.no"
moz-do-not-send="true">paaw@online.no</a> </div>
<div><b>Subject:</b> Grass Gasification</div>
</div>
</div>
<div> </div>
</div>
<div style="FONT-SIZE: small; FONT-FAMILY: 'Calibri';
FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE:
normal; TEXT-DECORATION: none; DISPLAY: inline">
<div dir="ltr">Dear sir, Pall Wendelbo,
<div> </div>
<div>I m writing this according to the information
got from Paul Anderson, Golden, Colorado and He
said that you had done gasification researches
for grasses. Me too is doing my masters research
on gasification of guinea grass (Panicum
maximum) and I have got some fine results. It is
a small scale system having 700 mm height and
200 mm in diameter. But the main problem
involved is the quick exhaustion of feed stock
and the compaction of grass. I have here by
attached my drawing and few pics of the flame.
looking forward to hear from you soon. Thank
you. </div>
<div> </div>
<div>Best regards <br clear="all">
<div> </div>
-- <br>
<div><strong><font color="#009900"><em>Janitha
Bandara</em></font></strong></div>
<div><em><font color="#009900">PG Student, Dept.
of Chemical & Process Engineering,
University of Moratuwa, Sri Lanka</font></em></div>
<div><em><font color="#009900">0094713058696</font></em></div>
<div><em></em> </div>
<div><em><strong><font color="#cc0000">Take
Hands in Reducing Consumption, Saving
Resources & Protecting Environment</font></strong></em></div>
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