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<div class="moz-cite-prefix">Dear Dean and Paul O.,<br>
<br>
The type of device that you describe (your messages are below) has
been done but at this point it is not commercially viable at small
sizes for residential purposes. <br>
<br>
Note: What are commonly called "Pellet Stoves" in America meet
your criteria of having "forced draft with auger pellet heating
stove" and are affordable by affluent people. However, they have
full-combustion in one spot (burn all the way to ash without the
gasifier-charactertistic of making gases separately from the
burning of the gases.) And they are not really configured to be
cooking stoves. The American pioneer of pellet stoves (Jerry
Whitfield see: <br>
<a class="moz-txt-link-freetext" href="http://woodpelletguru.blogspot.com/2007/12/in-beginning.html">http://woodpelletguru.blogspot.com/2007/12/in-beginning.html</a> )
has stated in the past year at some conference his interest in
making a unit with the cooking function. But i have not heard
more about that, and I do not have direct contact with him.
Info about pellet stoves is at:
<a class="moz-txt-link-freetext" href="http://en.wikipedia.org/wiki/Pellet_stove">http://en.wikipedia.org/wiki/Pellet_stove</a><br>
Jerry Whitfield is also interested in biochar: See
<a class="moz-txt-link-freetext" href="http://harvestcleanenergy.org/blog/Jerry-Whitfield-on-biochar.html">http://harvestcleanenergy.org/blog/Jerry-Whitfield-on-biochar.html</a><br>
<br>
On the topic of an actual gasifier for this task, the AVUD
technology and initial products have been done by Chip Energy.
See <a class="moz-txt-link-abbreviated" href="http://www.chipenergy.com">www.chipenergy.com</a> (Biomass Furnace and the Biomass Grill)
and is described in the widely available paper
"Micro-gasification: What it is and why it works" published in
Boiling Point several years ago. (also found at the
<a class="moz-txt-link-abbreviated" href="http://www.drtlud.com">www.drtlud.com</a> website ).<br>
<br>
The problem is the costs of having augers and fans only become
financially viable when the unit size is substantially larger than
what is practical for residential use. I believe that this can
be overcome, but I and Chip Energy do not have the financial
muscle to undertake that venture at present.<br>
<br>
If anyone would like to explore that type of device, please
contact me. And you can meet with me, but this will NOT be a
focal topic/target of my activities at the Stove Camps where I
will be presenting in Uganda, Oregon, Tennessee and Massachusetts
in July, July, Aug, and Oct., respectively. <br>
<br>
I do not recommend that you start from scratch. It took me 8
years to get to the AVUD stage, and I and Chip Energy have not
revealed everything in the publications. <br>
<br>
Paul <br>
<br>
<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 5/11/2013 9:51 PM, Dean Still wrote:<br>
</div>
<blockquote
cite="mid:CA+tShZs7R1JBjWfWg1eTcxrx2bauaHesGLujGJzf+mhAedraKQ@mail.gmail.com"
type="cite">Hi Paul,
<div><br>
</div>
<div>Although we have tried repeatedly to make a true gasifier
(making gas in one place that is transported to and burned in a
wood gas cooking stove) we haven't had great success. It seems
easier to me to follow the forced draft with auger pellet
heating stove approach. This is a well known technology and
might be relatively easy to change into a cooking stove for
folks in industrialized countries, I think. The TLUD comes close
but doesn't have the ease of operation of a forced draft auger
type pellet stove.</div>
<div><br>
</div>
<div>I'll try to make a prototype model for Stove Camp. I agree
that it's much better to only burn renewable gas that does not
add CO2 to the atmosphere. Let's get to work and create the
needed solutions.</div>
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Dean<br>
<br>
<div class="gmail_quote">On Sat, May 11, 2013 at 7:19 PM, Paul
Olivier <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:paul.olivier@esrla.com" target="_blank">paul.olivier@esrla.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div>
<div>
<div>Anil,<br>
<br>
</div>
I really think that we are coming close to the day
when biomass stoves could be installed in modern
kitchens. If biomass fuel has a relatively high bulk
density, if it is uniform in grain size, if it is
below 12% in moisture, (in other word, if it's well
prepared), it could be gasified or pryrolized in such
a manner that it could produce a gas that could
compete with the gas derived from fossil fuels that
are now being burned in modern kitchens. It's not
enough that we design biomass stoves for poor people.
We should be using them ourselves.<br>
<br>
</div>
I say to the entire stove community. Wake up. Design
biomass stoves that you would be proud to use in your
own kitchens. Do not just worry about the respiratory
health of poor people. Think equally about the much
bigger picture of the health of our entire planet that
profoundly impacts rich and poor alike. Every time we
turn on a modern gas appliance, we are contributing to
global warming. Let us do all within our power to put an
end to this nonsense.<br>
<br>
</div>
Paul Olivier<br>
</div>
<div class="gmail_extra"><br>
</div>
</blockquote>
</div>
</div>
</blockquote>
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