[Gasification] Important fuel processing Re: [Stoves] Repetitive Cross-Cuts.

jim mason jim at allpowerlabs.org
Wed Jan 5 01:52:48 CST 2011


on second view, that's andy!  when did you make that andy?  i'd never seen it.

j



On Tue, Jan 4, 2011 at 11:49 PM, jim mason <jim at allpowerlabs.org> wrote:
> paul, this is a spiral shear chunker.  i agree they are rather
> interesting.  there are quite a few getting made in various parts of
> the xgas world.  i had not seen this one you found, nor the guy doing
> it.  he is new.  where did he come from?
>
> awhile back i put together a list of all the chunker schemes i've
> seen.  there are about 5 different spiral shear types listed.  see
> here.
> http://wiki.gekgasifier.com/w/page/6123718/FrontPage .  please add any
> new ones found here if you can.
>
> there is one i proposed to do in the lid of a 55gal drum, using a car
> starter motor for the drive.  never made it, but it might be an
> interesting way to do it cheap in the dev world.
>
> i think it is likely be better to fix the gasifier so it can use more
> common fuels, via more common size reducing machines, than to require
> everyone to get/make a special fuel prep machine.  disk wood chippers
> are already everywhere, and with some work, the gasifier can work on
> this fuel.  beyond there things get much more difficult though.
>
> or make this one too.  we need more cutting devices.  some time put in
> on optimizing the making of spiral shears using sliced propane tanks
> as the blade might be interesting.
>
> jim
>
>
>
>
>
> On Tue, Jan 4, 2011 at 11:35 PM,  <psanders at ilstu.edu> wrote:
>> Dear Andy, Andrew, Alex, Crispin, all Stovers, and of interest to
>> Gasification folks also.
>>
>> Wonderful device!!   see it at:
>>
>> http://www.youtube.com/watch?v=lZCiCL6cffM
>>
>> Different, and more simple than the choppers I saw with Ed Burton and Phil
>> Jorgensen in Willets, northern California.  They use hydrolyics and can stop
>> and reverse the cutter if needed.  Are there other options that need to be
>> also recognized.
>>
>> I want one.  Andy, we need to talk.   (on Skype at   paultlud    or phone
>> 309-452-7072   or email )  Did you build this yourself?
>>
>> Looks to me like no teeth.  It is a shear.  the cutting blades are tapered
>> so only a small amount of wood is cut in each cm of the rotation.
>>
>> Safety features are lacking, but that is not the topic here.  The topic  is
>> that it works for chunking of wood.  Engineering will add the safety
>> shields, etc.
>>
>> Size of chunks is not the issue either.  Clearly can be scaled.  This unit
>> is powered by a power take-off (PTO).  You can see it spinning.  Geared down
>> to the right speed.  So it can be geared to almost any speed and torque
>> needed.
>>
>> Also, the fuel could be in a trough at maybe 45 degrees from vertical, and
>> come sliding down and hit a stopper to give the desired length.  And
>> possibly fed from two sides.
>>
>> And the woody biomass could even be of brush-type and the crosscuts would
>> give many short pieces with each slice.
>>
>> For power source, I had a plan for using the power wheel of a regular
>> car/vehicle.  Kevin and I talked about this many years ago.  The power part
>> is fine, but I did not have the shear like Andy has.  Simple to combine the
>> two concepts.
>>
>> Also as a power source for a SMALLER unit for smaller pieces, this shear
>> concept could be built to run from the power of a junk rotary lawnmower.  I
>> have wanted such a device for years, and now the missing component is quite
>> evident.  (Too bad my wife threw away a couple months ago the junk lawnmower
>> that I was saving for just such an opportunity.  Now I need to find another
>> one with the right features to make transition easy.)
>>
>> My partner in Chip Energy (Paul Wever, who Andy knows) could make such
>> devices easily.  And so could Crispin in the Swaziland factory or wherever
>> he gets his hands on the tools.
>>
>> Recent conversations about bamboo as fuel hit a snag about cross-cuts.  Now
>> that is no longer an issue.
>>
>> Okay, how do we proceed to accomplish the availability of this cross-cut
>> technology to people who could well use it?  This is for both the affluent
>> countries and the developing societies!!
>>
>> Dr. TLUD Anderson       psanders at ilstu.edu
>>
>>
>>
>> Quoting Crispin Pemberton-Pigott <crispinpigott at gmail.com>:
>>
>>> Dear Andrew S
>>>
>>>
>>>
>>> That unit sounds like it has teeth and I see there is a certain rotary
>>> kick
>>> to it sometimes.
>>>
>>>
>>>
>>> http://www.youtube.com/watch?v=lZCiCL6cffM
>>>
>>>
>>>
>>> Can you confirm that it has some sort of coarse teeth? Are there teeth on
>>> the stationary portion so rotation is largely prevented?
>>>
>>> Certainly a great device - never saw one before. It is obvious that if the
>>> feeding was horizontal you could have two people feeding, one on each
>>> side.
>>>
>>> We didn't get to see the final product up close. Do you think it is suited
>>> to a medium to large TLUD?
>>>
>>> Dr Paul A, what do you think of the chunk size? The power level looks low
>>> for something that can take on such large pieces. Very attractive.
>>>
>>>
>>>
>>> Regards
>>>
>>> Crispin
>>>
>>> Andrew,
>>
>> Neat.
>>
>> I kept trying to count your fingers but lost track every time my eyes closed
>> :)
>>
>> Al
>>  e
>>   x
>>
>>
>>
>> On 1/3/2011 1:30 PM, andy schofield wrote:
>>
>>
>> [Show Quoted Text - 44 lines][Hide Quoted Text]
>>
>>
>> Hi Andrew,
>>
>> Good to see you here! I have been wanting to read Stoves for a long time.
>> Doc T-LUD Anderson inspired me recently to join the list.
>>
>> A polished brass T-LUD installed down below with a proper charley noble,
>> could
>> extend the short yachting season here in the chilly Great Lakes.
>> Diesel stoves smell horrible!
>>
>> Two kw/ hr of heat to make coffee, and melt the frost from one's beard,
>> would require about two pounds of cherry pits.
>> This would be perfect for a certain antique H-28 I sail. The boat:
>> http://www.youtube.com/watch?v=e1tay_HUxNY
>>
>> The cost of pits at retail-outlets is high, because packers use propane
>> to dry them.
>> So for many, chopping wood is the best option to fuel a gasifying-stove.
>> Here is the method I use to cross cut maple blocks:
>> http://www.youtube.com/watch?v=lZCiCL6cffM
>>
>> Give my regards to Ken, next time you talk.
>>
>> Andrew Schofield
>>
>>
>>
>>
>>>
>>>
>>
>>
>>
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>>
>>
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>>
>
>
>
> --
> ------------------------------------------------------------------------------
> Jim Mason
> Website: http://www.whatiamupto.com
> Current Projects:
>    - Gasifier Experimenters Kit (the GEK): http://www.gekgasifier.com
>    - Escape from Berkeley alt fuels vehicle race: www.escapefromberkeley.com
>    - ALL Power Labs on Twitter: http://twitter.com/allpowerlabs
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>



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Jim Mason
Website: http://www.whatiamupto.com
Current Projects:
   - Gasifier Experimenters Kit (the GEK): http://www.gekgasifier.com
   - Escape from Berkeley alt fuels vehicle race: www.escapefromberkeley.com
   - ALL Power Labs on Twitter: http://twitter.com/allpowerlabs
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