Thanx Crispin for the photos,
but it looks like all the burnt off gas are not used for anything, except heating they sky..
So the 2-barrel 400 litre mobile
"adam-retort" i am working on
will overcome this and
the heat will be used to push carbonization + efficiency
cheers
Chris Adam
-----Original Message-----
Date: Sun, 21 Oct 2012 11:56:27 +0200
Subject: Re: [Stoves] 200
litre char maker from Mongolia
From: Ken Boak
<[email protected]>
To: Discussion of biomass cooking stoves
<[email protected]>
Hi Crispin,
Thanks for
the photo.
It looks like they have made a
base and a lid, each out of 1/3rd of a 200 litre drum, which have been
perforated for primary and secondary air.
These are added to a standard 200 l drum, presumably one
without a lid, which has either a perforated base or no base at
all.
The fluepipe looks at least 250mm
diameter, perhaps more.
This is similar in
construction to the re:char unit - but with air supply provided in the
special base and lid.
With these and similar
drum based biochar kilns becoming more common, I wonder whether it is
worthwhile categorising them into their basic mode of operation, so when
new designs come available, they can be similarly categorised and their
main design points, such as biomass to char conversion efficiency
defined.
For example, top lit, updraft, 25%
conversion
Thanks for
sharing - if there are any reports or links to these developments, I
would be interested.
Ken
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