<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Paul,</div><div><br></div><div>I should note that I find I can tune my iCan TLUDs to work well with a wide range of fuels. I have had success with wet wood chips, Jatropha seeds - individually pierced before use, grass tablets, grass pellets, wood pellets, chain saw kerf, pine comes, and various other materials. Generally, this tuning involves the amount of primary air and the amount of fuel in the system.</div><div><br></div><div>So I conclude from direct personal experience that a multi-fuel approach is quite workable. So far, I have not found a biomass that I cannot get to work in an iCan. Jatropha seeds were the most challenging so far, but it only took about three trials to get the tuning to work OK.</div><div><br></div><div>This of course only supports your observations.</div><div><br></div><div><br></div><div>Regards,</div><div><br></div><div>Jock</div><div><br><div>Jock Gill</div><div>P.O. Box 3</div><div>Peacham, VT 05862</div><div><br></div><div>Cell: (617) 449-8111</div><div><br></div><div><span style="background-color: rgba(255, 255, 255, 0);">:> Extract CO2 from the atmosphere! <:</span></div><div><br></div>Sent from my iPad</div><div><br>On Apr 6, 2013, at 1:35 PM, Paul Anderson <<a href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<div class="moz-cite-prefix">Dear Jock,<br>
<br>
Thank you for your observations. Useful for discussion and
especially for those getting started, but many seemed a bit
dogmatic, that is, too black and white. Guidance is good;
prescription is not so good.<br>
<br>
I do take exception with your Item number 2 which says:<br>
<br>
<blockquote type="cite">2. Basic design must be able to be tuned
for multi-fuel capability - no dependencies on<br>
a single type of feedstock. Jatropha beans, cherry pits, nut
shells, rice hulls, and<br>
densified grass are examples of preferred feed stocks with few,
if any, other uses. Each<br>
feedstock type is likely to require a specific tuning of the
system.</blockquote>
<br>
From my experiences and observations, the "specific tuning" needed
is basically different stoves for different fuels, especially for
the specialty (non-wood) feedstocks that you name: Jatropha
beans, cherry pits, nut shells, rice hulls, and<br>
densified grass. <br>
<br>
ESPECIALLY in places where those feedstocks are sufficiently
abundant, in those places a special stove could be the only one
needed, and therefore not needing to have multi-fuel
capabilities. <br>
<br>
We should encourage the stove developers to master one specific
fuel very well, and present that stove for evaluation. And not
divert to trying to make that stove also use other fuels. <br>
<br>
Basically, stove developers should NOT be discouraged when people
say "but will it also burn fuel X, or Y or Z." Do not worry,
there are so many places in the world with (you name the specific
fuel) that there could be substantial markets in those locations
to assure success of a stove for that specific fuel.<br>
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