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<div class="moz-cite-prefix">Dean,<br>
<br>
I do not know of any maker of that size of pellet in Uganda. I
am asking Nolbert and Karsten to confirm or comment. I hope you
(Dean) can tell us more about where or how you received them, and
are there any still available to be examined? And what was the
stove type?<br>
<br>
Paul<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>
On 3/15/2014 12:18 PM, Dean Still wrote:<br>
</div>
<blockquote
cite="mid:CA+tShZsH9d4B0UMw5D-QymR-F0Lq82wRVdk977b8gm1vNYqq3Q@mail.gmail.com"
type="cite">
<div dir="ltr">Hi Paul,
<div><br>
</div>
<div>The pellets were about one inch in diameter and very dense.
Hard to light and went out easily.</div>
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Dean</div>
</div>
<div class="gmail_extra">
<br>
<br>
<div class="gmail_quote">On Sat, Mar 15, 2014 at 8:37 AM, Paul
Anderson <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Dean,<br>
<br>
Please tell us about those pellets: characteristics and
source and used in what stove(s). The experience by
Awamu in Uganda does not agree with your statement.
But there could be different sources and different
stoves.<br>
<br>
Paul<br>
<br>
<pre cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a moz-do-not-send="true" href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>
Skype: paultlud Phone: <a moz-do-not-send="true" href="tel:%2B1-309-452-7072" value="+13094527072" target="_blank">+1-309-452-7072</a>
Website: <a moz-do-not-send="true" href="http://www.drtlud.com" target="_blank">www.drtlud.com</a></pre>
On 3/6/2014 1:20 PM, Dean Still wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi Tom,
<div><br>
</div>
<div>In Uganda the pellets were too dense and were
hard to light. Do you know the density of USA
heating stove pellets?</div>
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Dean</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Thu, Mar 6, 2014 at 11:02
AM, Tom Miles <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:tmiles@trmiles.com" target="_blank">tmiles@trmiles.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="white" link="blue" vlink="purple"
lang="EN-US">
<div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Richard,</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">You
probably mean 0.6 g/cm3 (37 lb/ft3) which
is very good that’s better than most
commercial wood pellets. For reference the
dry density of sawdust is often about .160
g/cm3 (or 10 lb/ft3). The loose density of
straw is about 0.08 g/cm3 or (5 lb/ft3).
The press roll on a pellet mill exerts
about 142 bars (2000 psig). If you can get
those densities by selecting materials,
wetting, pressing at 12 bar and drying you
are doing very well. </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><br>
Tom</span></p>
<p class="MsoNormal"><a moz-do-not-send="true"
name="144c664b24428537_14498c779ba49ea1__MailEndCompose"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></a></p>
<div>
<div style="border:none;border-top:solid
#b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
Stoves [mailto:<a
moz-do-not-send="true"
href="mailto:stoves-bounces@lists.bioenergylists.org"
target="_blank">stoves-bounces@lists.bioenergylists.org</a>]
<b>On Behalf Of </b>Legacy Found<br>
<b>Sent:</b> Thursday, March 06, 2014
10:46 AM<br>
<b>To:</b> Discussion of biomass
cooking stoves<br>
<b>Subject:</b> Re: [Stoves] Cuber and
size of densifying machines. (no
longer Re: The wood and char and fuel
"debate" )</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">Crispin, what densities
are you seeking. We have seen densities of
up to 0.6kg/cm^3 by use of really fine
granular material charcoal sawdust and
certain other ag residues as infiller in
hand presses generating only about 12 bars
pressure.</p>
</div>
<div>
<p class="MsoNormal">I have not attempted
pellet production but have no doubt that
high pressure is not needed: Rather its
more about attention to blend particle
density and size and variations between
these (sorting coefficients) that makes
the difference density wise. </p>
</div>
<div>
<p class="MsoNormal">May look into it if
anybody is interested in the fuel pellet
world.</p>
</div>
<div>
<p class="MsoNormal">Richard<br>
<br>
Sent from my iPhone</p>
</div>
<div>
<p class="MsoNormal"
style="margin-bottom:12.0pt"> <br>
On Mar 6, 2014, at 11:38, Crispin
Pembert-Pigott <<a
moz-do-not-send="true"
href="mailto:crispinpigott@outlook.com"
target="_blank">crispinpigott@outlook.com</a>>
wrote:</p>
</div>
<blockquote
style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Dear
Friends</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I
agree with Dean on this score. The
air flow through the pellets
strongly affects the way they burn
if the device is constructed such
that the fuel contributes a
significant element of air control.</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">These
devices</span></p>
<p class="MsoNormal"><image002.jpg></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"> <span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Are
‘cubers’ in that they are producing
densified lumps that can be put into
a stove. But they will work best in
a large stove such as is used in
China for space heating and
cooking. The input material is
straw and other stover.</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The
mechanism is an eccentric roller
running inside a perforated cage at
maybe 60-100 RPM. As Tom notes,
power consumption is about 110 kW.</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">So
far I don’t think the product is
economically viable as there is a
subsidy involved. What we need is a
breakthrough technology that will
make densified fuel without the need
for heat.</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Regards</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Crispin</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span></b></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<div>
<p class="MsoNormal">Hi Paul,</p>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">I have seen the
very small pellets sold for
heating stoves in the US burn very
cleanly. Larger sized pellets did
not burn as cleanly. </p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">Best,</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">Dean</p>
</div>
</div>
</div>
</div>
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