[Stoves] Karve kilns was Re: Looking for a stove designed for larger amounts of biochar

[Paul S. Anderson]

Dear AD, Priya, and all at ARTI,

Good that this topic has come up again.  And thanks to Alex for posing  
a good list of questions for updating all of us.

But I went to the Stoves website and could not find a good description  
of what the process is.  The is one piece
http://www.goodnewsindia.com/Pages/content/discovery/karve.html
that has 2002 and 2004 dates on it, and it shows one picture of the  
kiln of that time, with 7 barrels in it.   But from when I visited  
ARTI in Phaltan (about 2006) there was a mobile unit that was taken to  
the fields.  I do not see any write-up.  Is there some broken link  
that someone can resend?   Or whatever the Karve's can provide.

I am requesting some background info upon which the responses to  
Alex's questions can be referenced.

Thanks.

Paul
-- 
Paul S. Anderson, PhD
Known to some as:  Dr. TLUD    Doc    Professor
Phone (USA): 309-452-7072   SKYPE: paultlud   Email: psanders at ilstu.edu
www.gtz.de/de/dokumente/giz2011-en-micro-gasification.pdf   (Best ref.)


Quoting Alex English <english at kingston.net>:

> Dear A.D. Karve,
>
> You have now been at this for a decade or so.   I, predictably, am  
> just curious to know more details.
> Perhaps it would be useful  information for others too.
>
> Concerning your TLUD style kilns, can you share with us ;
>
> 1. how many of these kilns are active,
> 2. how much total charcoal all the kilns produce per year or season,
> 3. what percentage of ARTI charcoal briquettes are made with  
> charcoal from these kilns,
> 4. how long it takes to earn back the purchase price of the kiln,
> 5. how long the kilns last.
> 6. are the number of these kilns in use still growing.
> 7. is there a subsidy for any part of this energy production-stove chain.
> 8. has the kiln been adopted beyond your region.
> 9. what is the bulk density of the charred cane trash as transported  
> before being briquetted.
> 10. average distance it travels from field to market.
> 11. Are any wheels involved in the cane fields, either moving the  
> kiln to the trash or the trash to the kiln.
> 12. Are there any concerns about the loss of nutrients from these fields.
>
>
> Warm regards
> Alex English
>
> On 13/11/2011 11:18 PM, Anand Karve wrote:
>> Dear Stovers,
>> we are currently using 200 litre steel barrels for charring sugarcane
>> leaves into charcoal. Our kilns work on the TLUD principle. Since
>> sugarcane leaves are light in weight and difficult to transport, we
>> send our kilns to the farm where they are harvesting sugarcane,
>> convert the dry leaves into charcoal and bring the charcoal back to
>> our briquetting facility. The gaseous part of the leaves is burned and
>> exhausted. Being an ambient operation, we cannot harvest or use the
>> energy generated by burning the gaseous fraction of the biomass. But
>> since sugarcane leaves are in any case burned in the field itself,
>> nobody mourns for the loss of energy.
>> Yours
>> A.D.Karve
>>
>
>
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