[Stoves] 40% yield of charcoal

[Crispin Pemberton-Pigott]

Dear AD

Do you think the 40% charcoal has a high volatility level, or are the 
volatiles converted to other forms with the 'volatile' carbon not becoming 
attached to the 'char' carbon?  If you get my meaning...

It seems odd that so much of the volatiles would be retained in something 
still called 'charcoal' which is sort of defined as biomass with the 
volatiles driven off.  It seems it would be 'a fuel that is blackened' 
because if it is still replete with most of the original volatile content it 
is something else.

I would be really interested in find some of the fuel to try in a couple of 
stoves.

I understand that the pressure in the container is 6 bars.  One contributor 
to this list mentioned charcoaling a 12" diameter log 5 feet long in 
something like 90 minutes. It must churn out a heck of a lot of heat and gas 
to accomplish that!  Is not the inventor a subscriber to this list?

Regards
Crispin

----- Original Message ----- 
From: "Tom Miles" <tmiles at trmiles.com>
To: "'Discussion of biomass cooking stoves'" <stoves at listserv.repp.org>
Cc: "'Priyadarshini Karve'" <priyadarshini.karve at gmail.com>
Sent: Saturday, June 09, 2007 1:05 PM
Subject: Re: [Stoves] 40% yield of charcoal


AD

A stove that can burn a high volatile fuel should be able to burn this 40%
yield char.

Tom Miles