Re: GAS-L: Sweet Chestnut Gasification

["A.D. Karve" <adkarve@pn2.vsnl.net.in>]

Dear Paul,
in India, sorghum and maize fodder is chopped in a hand operated "chaff
cutter".  The cheapest model consists of a single blade that is worked up
and down like the blade of a guillotine.  We are working on modifying this
model in such a way, that the blade can be operated pedally instead of
manually. This would leave the hands free to manipulate the load of fodder
on the work platform.  The more sophisticated ones have two blades, that
serve as the spokes of the wheel. When a handle, placed near the rim of the
wheel is rotated, it also activates a mechanism that pushes the fodder load
towards the wheel so that it gets caught in the blades on the spokes.
I can inquire about the prices and let you know, if you are interested in
such a contraption.
Dr.A.D.Karve
President
Appropriate Rural Technology Institute
Pune, India
-----Original Message-----
From: Paul S. Anderson <psanders@ilstu.edu>
To: Graeme Williams <graeme@powerlink.co.nz>; rebecca.heaton@bronzeoak.com
<rebecca.heaton@bronzeoak.com>
Cc: gasification@crest.org <gasification@crest.org>; bioenergy@crest.org
<bioenergy@crest.org>; stoves@crest.org <stoves@crest.org>
Date: Monday, June 17, 2002 11:28 PM
Subject: Re: GAS-L: Sweet Chestnut Gasification


>Dear Graeme and other "Gasifiers", (with copy to the Stoves list serve)
>
>I am new to this list serve, but have been active for a year on the Stoves
>List serve.  I am working with Tom Reed on a domestic gasifier stove for
>cooking with biomass.  My area of work is southern Africa, specifically in
>Mozambique and where it joins with Swaziland and South Africa.  I head to
>Africa on 4 July for 3 months.
>
>My question is about "chippers".  Graeme makes clear statements about drum
>chippers producing poor quality chips and screw-auger chippers producing
>good quality chips.
>
>Is there a good source of info about these chippers, especially regarding
>making fuel for gasifiers?  I am especially interested in the least
>expensive, and I hope manually powered, but all info will be useful.
>
>Paul
>
>Paul S. Anderson (full signature block info should be at the end of this
>message.)
>
>At 03:34 PM 6/14/02 +1200, Graeme Williams wrote:
>>Hello Rebecca,
>>
>>Sweet Chestnut should not cause any problems if used for down draught
>>gasifiers.  As with all woods used for gasification, the moisture content
>>should be as low as possible (15 - 20%) and you need to closely monitor
the
>>chip size.
>>
>>The big trap for most projects drawing wood from city forestry, is the use
>>of drum chippers which make a lot of fines and is very poor gasifier fuel.
I
>>am pretty sure there was a lot of chestnut chipped at Rural Generations
>>Brook Hall Project in Londonderry following Winter gales a couple of years
>>ago and there were no unusual problems, although it was mixed with other
>>hardwoods.
>>
>>Make sure you use a screw auger chipper with a medium size chip (50 x 25 x
>>5) and it should work fine.
>>
>>Problems with coppice willow gasification can be overcome with a correctly
>>designed gasifier, and again the correct cutting size of the chip.  If you
>>haven't done so, you can read about our work with the fuel on the Fluidyne
>>Archive www.fluidynenz.250x.com
>>
>>Hope this helps
>>
>>Doug Williams
>>FLUIDYNE GASIFICATION
>>
>>
>>-
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>>
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>>http://www.crest.org/articles/static/1/1011975672_7.html Carbon
>
>Paul S. Anderson, Ph.D.,  Fulbright Prof. to Mozambique 8/99 - 7/00
>Dept of Geography - Geology (Box 4400), Illinois State University
>Normal, IL  61790-4400   Voice:  309-438-7360;  FAX:  309-438-5310
>E-mail: psanders@ilstu.edu - Internet items: www.ilstu.edu/~psanders
>
>
>-
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>>
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>>
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>-
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>http://www.crest.org/articles/static/1/1011975339_7.html Gasification
>http://www.crest.org/articles/static/1/1011975672_7.html Carbon
>>
>For information about CHAMBERS STOVES
>>http://www.repp.org/discussiongroups/resources/stoves/Chambers/Chambers.ht
m
>
>


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>
Stoves List Moderators:
Ron Larson, ronallarson@qwest.net
Elsen L. Karstad, elk@wananchi.com www.chardust.com
>
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Other Biomass Stoves Events and Information:
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http://www.crest.org/articles/static/1/1011975339_7.html Gasification
http://www.crest.org/articles/static/1/1011975672_7.html Carbon
>
For information about CHAMBERS STOVES
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