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<div class="moz-cite-prefix">Rolf,<br>
<br>
I hope that you can find the photos, and revive this topic. New
developments in the past decade might offer some better solutions.<br>
<br>
Paul
<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 1/1/2014 6:43 PM, energiesnaturals wrote:<br>
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<div>Hello chunkers,</div>
<div><br>
</div>
<div>For small manual chunking devices I cannot help much, but I
see that there is also some interest in more mecanized
solutions.</div>
<div><br>
</div>
<div>At least in Europe you can still find many of the old Jensen
woodchoppers with 6 and 12 cm long chunks produced and up to15
cm diameter.</div>
<div><br>
</div>
<div>I remember putting a series of fotos on the list some years
ago, perhaps on the bioenergy list. </div>
<div><br>
</div>
<div>Have a good year!</div>
<div><br>
</div>
<div>Rolf</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div style="font-size:100%">Enviado desde Samsung tablet</div>
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<br>
David Coote <a class="moz-txt-link-rfc2396E" href="mailto:dccoote@mira.net"><dccoote@mira.net></a> escribió:<br>
An inexpensive tool to chunk efficiently wood for small scale
biochar <br>
production would be very handy. I have loads of waste woody
biomass on <br>
my farm. There's no community scale biomass energy plants in the <br>
northern hemisphere sense in Gippsland (SE corner of Australia) so
no <br>
local markets of this nature for the material. This may change in
the <br>
next few years but in the interim I'd like to make some char as a
<br>
weekend project. One of my nephews is a qualified boiler maker
with <br>
tickets for various specialist welding techniques. He's interested
in <br>
building a small char system. This would probably be similar to
the <br>
popular 44 gallon drum with internal retort (so an indirect <br>
implementation) but using a better quality steel so a bit longer <br>
lasting. And we'll lag the drum, put a safety enclosure around it
and so on.<br>
<br>
One of the challenges of trying to do this beyond a hobby approach
is <br>
chunking the material to be used for combustion and char. I
haven't got <br>
time to lovingly handcarve the feedstock into the appropriate size
and <br>
form. Using an axe, saw, firewood splitter, bypass pruners would
all be <br>
possible for different sized feedstocks (windthrow, prunings,
thinnings, <br>
harvest residue etc) albeit labour intensive. Something like an
old <br>
chaff cutter would be very useful for some feedstocks. I think
there are <br>
some commercial chunkers that would do what I want but they are <br>
prohibitively expensive<br>
<br>
David<br>
<br>
<br>
<br>
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