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<div class="moz-cite-prefix">Paul,<br>
<br>
Fans eliminate the need for risers. Without the fan, you stove
lacks the "pull" of the updraft at the level of the flame. 4
inches of draft could do the job, but maybe not with the burner
head with the hundred small holes. Try a simple experiment with
a riser ring around the burner top. If not successful, make a
burner top like on the Mwoto or Quad or Champion stoves.<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 6/22/2013 7:41 PM, Paul Olivier wrote:<br>
</div>
<blockquote
cite="mid:CAOreFvYSOTX0E=EHtetcsnGgC9ZQ53oHrm6=E+HriyOoHnaJyg@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>I had no idea that solar and wind were competing so well
against fossil fuel power plants:<br>
<br>
<i>Companies like RWE of Germany and EDF of France are
confronting complex challenges. Their revenue is being hit
by dwindling demand for electricity and by new wind and
solar projects that undercut the price of the energy
produced from many fossil fuel plants...<br>
<br>
With so much energy coming from renewables, many fossil fuel
plants can no longer compete on price. Despite the upfront
costs associated with green energy projects, they are
inexpensive to run... <br>
<br>
The rising output and falling prices of green energy may be
part of the problem for fossil fuel generators, but they are
part of the solution for energy consumers. </i><br>
<br>
</div>
<div>Biomass stoves must also gain in prominence within
developed countries. Replacing fossil fuel gas with syngas in
modern kitchens should be a top priority.<br>
<br>
</div>
<div>Yesterday I tested a super-short reactor (net reactor
height of 20 cm). The reactor weighs 1.2 kgs and is made
entirely of bright annealed 304 stainless steel. These
pictures were taken right after the first run:<br>
:<br>
<a moz-do-not-send="true"
href="https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1567.JPG">https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1567.JPG</a><br>
<a moz-do-not-send="true"
href="https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1568.JPG">https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1568.JPG</a><br>
<a moz-do-not-send="true"
href="https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1569.JPG">https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1569.JPG</a><br>
<a moz-do-not-send="true"
href="https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1571.JPG">https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1571.JPG</a><br>
<br>
</div>
<div>I filled the reactor with about four inches of pellets.
This gave a burn time of about 40 minutes. The pellets were
easy to light. I thought for a moment that the unit might work
without a fan. But this was not possible. A fan is still
needed.<br>
<br>
</div>
<div>But the fan that I was using is much too powerful for such
a short reactor filled with pellets. The fan was turning at an
incredibly low speed. It was using surely no more than about a
half watt of electricity. I need a fan of a much lower air
resistance - perhaps only 20% that of the fan that I use on
loose rice hulls.<br>
<br>
</div>
<div>The biochar produced from the rice hull pellets remained in
pelleted form:<br>
<a moz-do-not-send="true"
href="https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1563.JPG">https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1563.JPG</a><br>
</div>
<div>The original rice hull pellets had a diameter of 8 mm. When
converted into biochar, the diameter of the pellets decreased
to 7 mm.<br>
<br>
</div>
<div>The flame was orange, not blue. A few months ago I had
tested a 70 cm reactor completely filled with rice hull
pellets of a 6 mm diameter. Here the flame was blue.<br>
<br>
</div>
<div>When I run a gasifier on loose rice hulls, small particles
of fly ash are always being emitted from the burner. With
pellets, I could not see any particulate matter.<br>
</div>
<div><br>
</div>
<div>This gasifier is still a very crude device. However I do
believe that the day is not so far away when small,
lightweight gasifiers could make their way into modern
kitchens throughout the world. Just as fossil fuel power
plants are being replaced by solar and wind, stoves using
fossil fuel gas must be replaced by stoves using syngas.<br>
</div>
<div><br>
</div>
<div>Thanks.<br>
</div>
<div>Paul Olivier<br>
</div>
<div>-- <br>
Dalat<br>
Vietnam<br>
<br>
Louisiana telephone: 1-337-447-4124 (rings Vietnam)<br>
Mobile: 090-694-1573 (in Vietnam)<br>
Skype address: Xpolivier<br>
<a moz-do-not-send="true" href="http://www.esrla.com/"
target="_blank">http://www.esrla.com/</a>
</div>
</div>
<br>
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