[Stoves] Using all the energy when char making

[rongretlarson at comcast.net]

Dr. Rajvanshi: cc stoves and adding "bochar-production" 

Thanks for sending us this report. A few questions 

a. This work was done in the mid '90's. What has happened recently with this or similar equipment in India or your part of India? Can one now buy such hardware? 

b. What caused NARI to design a pyrolyzer rather than a combustor? 

c. In the Abstract, you said the char "... .can be used as a soil conditioner ." This would have been very early in the history of what we now call "biochar". Was there then a market near Phaltan for such? Now? 

d. Your economics section does not show a price for char. Can you guesstimate the relative value then and now for the char? 

Congratulations for what appears to have been a successful design - ahead of its time.. 

Ron 

----- Original Message -----
From: "Nariphaltan" <nariphaltan at gmail.com> 
To: "Discussion of biomass cooking stoves" <stoves at lists.bioenergylists.org> 
Cc: "Discussion of biomass cooking stoves" <stoves at lists.bioenergylists.org> 
Sent: Monday, May 13, 2013 6:08:24 PM 
Subject: Re: [Stoves] Using all the energy when char making 


Have a look at this "char making machine". www.nariphaltan.org/Gasifier.pdf 


Cheers. 

Anil K Rajvanshi 


Sent from my iPad 





On 13-May-2013, at 11:24 PM, "Frank Shields" < frank at compostlab.com > wrote: 








Stovers, 





Seems there is often a lot of wasted energy that could be used when making char that is just flared off. 

I’m thinking the reason is that to convert to electricity one needs 1) a very clean syngas 2) an expensive motor and 3) costly up-keep. The generator is a onetime purchase with low maintenance. 



So why not use a steam engine to convert the flame to electricity? Perhaps not as efficient but all you are doing is heating water so the gas need not be as clean as when drawn into an internal combustion engine. 





Thanks 





Frank 





Thanks 



Frank Shields 



BioChar Division 

Control Laboratories, Inc. 

42 Hangar Way 

Watsonville, CE 95076 



(831) 724-5422 tel 

(81) 724-3188 fax 

frank at biocharlab.com 

www.controllabs.com 






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