Dear Paul
----- Original Message -----
From: Paul Anderson
To: [email protected] ; Discussion of biomass pyrolysis and
gasification ; Discussion of biomass cooking stoves ; Bob Fairchild
Sent: Wednesday, January 08, 2014 3:58 PM
Subject: Re: [biochar] Re: [Gasification] Chunking wood for small scale
biochar production, fotos !
Kevin,
I want to know about any and all reasonable devices that work. Reality now
trumps specifications and expenses of R&D.
# OK.... perhaps you could start with:
1: A description of the biomass feed materials to be handled... species,
size, etc
2: A description of the "end product" that would be suitable for the
applications you have in mind, such as species, moisture content, permissable
dimension range for the end product, etc
3: Desired production rate, eg, kg/hr, tonnes/hr, etc
4: Approximate permissable cost
5: Approximate sales potential, in units per year
Personally, I lack the mechanical knowledge and the time to do this myself.
But I KNOW it is important, and I turn to my friends on the Listservs, with
gratitude for whatever can be accomplished.
# You don't need mechanical knowledge at this stage... all you need is to
tell the list what you want, in more specific terms.
In many cases, "The biggest part of the problem is defining the problem, and
the limitations to its potential solution."
Best wishes,
Kevin
Paul
Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: [email protected]
Skype: paultlud Phone: +1-309-452-7072
Website: www.drtlud.comOn 1/8/2014 12:45 PM, Kevin wrote:
Dear Paul
As per my previous e-mail, (copy appended below the ******** line) you
really should describe the job you want done, so that designers would at least
have some "starting specifications" on which to base their estimated cost.
Do you want someone to design and build them for you to re-sell, or do you
want a suitable "set of plans" that you could sell or give to people.? Or
perhaps you have some other arrangement in mind?
Best wishes,
Kevin
----- Original Message -----
From: Paul Anderson
To: [email protected] ; Discussion of biomass cooking
stoves ; [email protected] ; Bob Fairchild ; Ron Vanetten
Sent: Wednesday, January 08, 2014 2:17 PM
Subject: [biochar] Re: [Gasification] Chunking wood for small scale
biochar production, fotos !
To all,
Yes, it certainly seems to be a chunker. Yes, the wood seem weak, but
the machine seems adequate.
See also:
http://www.youtube.com/watch?v=3J3hsWyuyTg
Seem to be in some Slavic language? Do we have any further information?
All seems sufficiently inexpensive for many of us, and could be appropriate
for someone in a developing country to make a living going around chunking
people's low-value branches. And there seem to be other videos suggested by
YouTube.
I request assistance from someone(s) with mechanical talents to help
bring such technology to our understands (and ability to replicate and improve
as necessary).
The issue is not the power source (electric or small gasoline or ??).
The issue is the breaking and/or chunking of such biomass.
Paul
Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: [email protected]
Skype: paultlud Phone: +1-309-452-7072
Website: www.drtlud.comOn 1/7/2014 10:35 PM, Pete & Sheri wrote:
I'd certainly call that one a chunker. But I noticed that at least one
of the branches broke in half as it was fed in. Maybe some pretty rotten wood?
If the machine can do that kind of work with solid wood it seems to be
a good contender.
At least for a little while. (It does jump around some).
Pete Stanaitis
----------------
From: Gasification
[mailto:[email protected]] On Behalf Of Cesar
Casanova
Sent: Tuesday, January 07, 2014 9:25 PM
To: Discussion of biomass pyrolysis and gasification
Subject: Re: [Gasification] Chunking wood for small scale biochar
production, fotos !
Hi, Is this a chunker or wood chipper?
http://www.youtube.com/watch?v=c4GUEq_ubkw
Cesar
*******************************************************************************************
----- Original Message -----
From: Kevin
To: [email protected] ; Mark Ludlow ; 'energiesnaturals' ;
'Discussion of biomass cooking stoves' ; 'Bob Fairchild' ; 'Ron Vanetten'
Sent: Monday, January 06, 2014 2:46 PM
Subject: Re: [biochar] Re: [Stoves] Chaff cutters and wood choppers
Dear Paul
The request is like the question: "How long is a piece of string"?
:-) There are many different potential chaff cutter and wood chopper designs.
There are as many as there are "potential applications."
Some of the variables may include:
* Production rate required.
* Manual or machine power
* Feed material
* Desired "cut product size and shape.
* Need for screening and sizing of product or not?
* Portability
* Durability
* Potential annual sales for each specific product
* Permissible price for a product or specific device to accomplish a
specific task
* Etc.
These variables, and the "necessary features" required, must be
specified before it is possible to configure a suitable design and to estimate
a cost "at the factory gate."
So, if you required a "cutter" or "chopper" to make a fuel suitable
for TLUD's, you should specify all the relevant properties and features that
would be necessary for a Designer to configure a product design that would meet
your needs. However, the Designer should know how much the Customer could
afford to pay for the final product, so that he will know if it is even
possible to build a product that will be affordable to the Target Customer.
Additionally, the Designer needs to know the expected sales volume per year, so
that he can figure in the economies of scale in developing prices.
Best wishes,
Kevin
----- Original Message -----
From: Paul Anderson
To: Mark Ludlow ; [email protected] ; 'energiesnaturals' ;
'Discussion of biomass cooking stoves' ; 'Bob Fairchild' ; 'Ron Vanetten'
Sent: Saturday, January 04, 2014 4:07 PM
Subject: Re: [biochar] Re: [Stoves] Chaff cutters and wood choppers
Mark,
I am not good at estimating price points, and the number of
variations (feeder rollers, flywheel, thickness of sticks) are so numerous that
to say a price without specifying all the rest might not be very realistic.
So, as a NON-engineer, I request assistance from other readers about price vs
features.
Even if I purchased one for where I live (Illinois, USA), my usage
would be limited, and not related to amounts like tons. And to export from
Mexico to Africa would be in the same league as importing cutters from India,
meaning: difficult.
I would like to know what could be accomplished at different price
points. Is that a reasonable place to start? (I hope others will comment.
And maybe something can be accomplished.)
Mark, where are you in Mexico, and when did you move there?
Greetings to your wife.
Paul
Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: [email protected]
Skype: paultlud Phone: +1-309-452-7072
Website: www.drtlud.comOn 1/4/2014 2:23 AM, Mark Ludlow wrote:
Hi Paul,
It would be useful if you could state a price point that would
make equipment like this realistic. The machine Rolf describes is typical, but
I appreciate the fact that limbs and trunks are fed at an angle. Shearing at an
angle reduces the shear force required and thus increases the output per unit
of power input. I could build a no-frills (except for safety systems) chipper
like the one Rolf describes, here in México, at cost, if you are interested.
México is the productivity-adjusted, lowest-cost producer in the world, as of
2014. Yet many are unemployed.
If you tell me some number, say $/MT of green input, this gives
us a target to design against. I think that energy-storage (flywheel) to
accommodate impulse loading may work, but the amount of energy required is
easily calculated and is reflected in the nominal hourly-input rating.
I will support development costs (as a non-profit) if you will
tell me there is a market for XXX Machines at XXX Cost on the horizon.
Buen Viajo en Africa!
Mark
From: [email protected] [mailto:[email protected]] On
Behalf Of Paul Anderson
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