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| Stoves Archive for October 2002 |
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| 236 messages, last added Tue Nov 26 17:31:57 2002 |
[Date Index][Thread Index]
Re: History of very small true gasifier units
Stovers and friends,
About this "top-lighted straw burner", the original message was:
> > > >I heard anecdotal evidence of a very low cost string bound straw
>'sausage'
> > > >'briquette' being used to cook in Kampala restaurants. It was placed
>into a
> > > >fairly tight fitting metal can and top lit. The diameter was on the
>order
> > > >of 5 inches. It apparenetly burned very cleanly and was the cheapest
>fuel
> > > >around..
Can the original writer define "fairly tight fitting metal can"?
There is NO mention of air entering from the bottom. Maybe it was
unintentional (as with a badly made can). But as it reads, there user of
the "fairly tight fitting metal can" apparently did not realize that an
up-draft (or IDD) pyrolysizing unit was in operation. And probably still
does not realize it. (continue below)
>Tom Reed wrote:
>Glad to hear of the "sausage" cooker. But I don't agree that there weren't
>holes in the bottom. Without the holes only a cm or two would burn because
>air can't enter from the top while gas is exiting.
I am not disagreeing with what Tom and others are saying. I say the we
have insufficient evidence that this straw burner was in fact really a
"gasifier" that some seem to think that it must be. More info please.
Anyone else have any stories or info for the "history of very small true
gasifier units"??
Ron, any info about the "Mormon stove" that you mentioned was made of 2
holes in the ground? It could CLEARLY be an early gasifier if the holes
were connected at the bottom, with primary air going down one hole and then
up in the hole with the fuel. And top lighted?? Before I dig holes in my
yard, I hope someone can send me further information.
By the way, considering the poverty conditions in Mozambique and in refugee
camps and elsewhere, this "Mormon stove" two-holes in the ground method
DOES have potential for 21st century applications.
Paul
Paul S. Anderson, Ph.D., Fulbright Prof. to Mozambique 8/99 - 7/00
Rotary University Teacher Grantee to Mozambique >10 mo of 2001-2003
Dept of Geography - Geology (Box 4400), Illinois State University
Normal, IL 61790-4400 Voice: 309-438-7360; FAX: 309-438-5310
E-mail: psanders@ilstu.edu - Internet items: www.ilstu.edu/~psanders
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