<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body><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></div> <br>David Coote <dccoote@mira.net> 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>_______________________________________________<br>Gasification mailing list<br><br>to Send a Message to the list, use the email address<br>Gasification@bioenergylists.org<br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br>http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org<br><br>for more Gasifiers, News and Information see our web site:<br>http://gasifiers.bioenergylists.org/<br></body>