[Gasification] [biochar] Re: Chunking wood for small scale biochar production, fotos !
Kevin
kchisholm at ca.inter.net
Wed Jan 8 15:33:33 CST 2014
Dear Paul
----- Original Message -----
From: Paul Anderson
To: biochar at yahoogroups.com ; 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: psanders at ilstu.edu
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: gasification at lists.bioenergylists.org ; Discussion of biomass cooking stoves ; biochar at yahoogroups.com ; 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: psanders at ilstu.edu
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:gasification-bounces at lists.bioenergylists.org] 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: biochar at yahoogroups.com ; 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 ; biochar at yahoogroups.com ; '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: psanders at ilstu.edu
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: biochar at yahoogroups.com [mailto:biochar at yahoogroups.com] On Behalf Of Paul Anderson
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