Dear Crispin
----- Original Message -----
From: "Crispin Pemberton-Pigott" <[email protected]>
To: "Stoves" <[email protected]>
Sent: Sunday, February 24, 2013 10:09 PM
Subject: Re: [Stoves] combustion of char
Dear Kevin
When was the last time you saw a stove well designed to burn charcoal?
# I have never seen a particularily well designed charcoal stove... the only
ones I have seen were basically a grate, on which charcoal briquettes
rested. I have seen a Powerpoint Presentation by Gus at
[email protected] , and it looks rather impressive. He is still in the
development stage, with further testing and tweaking planned.
I am not sure you would see much difference with the other fuel. It would
probably ignite more easily than char produced at high temperature. The
big advantage of the high pressure method is total control over the
process and a very short burn time.
# Certainly, higher pressures and temperatures would give faster reaction
rates. All good stuff, and in an appropriate stove, they would burn well.
However, the point here is that teh charcoal, before it reaches teh stove,
is likely to be very different from "normal atmospheric charcoal", and its
characteristics with respect to teh potential for spontaneous combustion
could be quite different from "atmospheric charcoal."
Cecil was recently investigating the production of charcoal in Battambang.
The burn time is unusually long and I think the production % is below 15.
Really bad. It was my yearning hope that the process would be made
available so a dramatic change could be wrought in the forests of the
Third World.
# Is he using an "air blown" or "retort" process? Packing density, particle
size, and moisture content are very important to both. Bed porosity is
particularily important for an "air blown" charcoal maker.
Still possible...
# Sure! I think there is probably an opportunity to optomize feed
conditions, to maximize yield in minimum time.
Best wishes,
Kevin
Regards
Crispin
-----Original Message-----
From: "Kevin" <[email protected]>
Sender: "Stoves" <[email protected]>
Date: Sun, 24 Feb 2013 21:55:45
To: Discussion of biomass cooking stoves<[email protected]>
Reply-To: Discussion of biomass cooking stoves
<[email protected]>
Subject: Re: [Stoves] combustion of char
_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
[email protected]
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
for more Biomass Cooking Stoves, News and Information see our web site:
http://www.bioenergylists.org/
_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
[email protected]
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
for more Biomass Cooking Stoves, News and Information see our web site:
http://www.bioenergylists.org/
_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
[email protected]
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
for more Biomass Cooking Stoves, News and Information see our web site:
http://www.bioenergylists.org/
