Re: History of small gasifiers. Re: straw briquettes

["Paul S. Anderson" <psanders@ilstu.edu>]

Stovers,

Alex sent this informative message.  I wonder if anyone can carry this lead 
any further, such as to contact Per S. Nielsen.

I find the topic of the history of the pyrolysis-gasifiers to be very 
interesting, and I hope you can help with further info.  I will eventually 
write a short history and send it to the List serve.  But I need info 
first, including any experiences YOU have had with small pyrolysis-gasifier 
stoves.  (I only have the info about Reed, and Reed-Larson, and Anderson, 
so far.)   I am tracking on the Mormon Stove lead via Mormon historians.

Paul

At 08:40 PM 10/25/02 -0400, you wrote:
>Paul,
>When I was hosting the stoves web page I had a link to  Per S Nielsen's 
>Home page. He
>had a couple of related papers there, on of whick was about the Kampala 
>top lit grass
>stove or Peko Pe. Unfortunately those links are dead now. The following is 
>an abstract,
>but the real thing must be out there somewhere.
>
>Alex
>
>Efficiency tests on the pyrolysis gasifier stove Peko Pe
>Abstract
>This paper presents results from water boiling tests on the pyrolysis 
>gasifier stove
>Peko Pe, which has been developed by the Norwegian Paal Wendelbo. The stove
>efficiency determined vary between 21 and 29% when burning dry Danish
>woodchips (10% moisture) with an estimated caloric value of 16 MJ/kg. CO-
>emissions have been determined with varying distance between the stove and 
>the
>pot to estimate the combustion efficiency. Efficiency tests performed in
>Adjumani refugee camp with grass as fuel show a stove efficiency of 25-29%
>with a caloric value of 14 MJ/kg. It has not been possible to determine 
>the water
>content in the grass. In Adjumani refugee camp it was furthermore found 
>that the
>stove was able to provide sufficient energy from solid combustion, after the
>pyrolysis was stopped, to boil water for additional 25-30 minutes with 
>lid. This
>effect was not seen in the tests on woodchips in Denmark. Advantages and
>disadvantages of the stove compared to three-stone stoves are discussed and
>perspectives are outlined for further improvements of the stove.
>
>If you want to download the entire paper (Word 6.0-document) then click here
>for zip-file (23000 bytes) and click here for Word-file (79360 bytes).
>
>
>
>
>
>
>On 25 Oct 2002 at 17:14, Paul S. Anderson wrote:
>
> > Crispin and any stovers near Kampala,
> >
> > Can anyone provide further information about this straw briquette and its
> > can and top lighting.  Crispin said "anectotal evidence".   Has anyone 
> seen
> > such a thing?   Anyone in East Africa who could provide further info?
> >
> > 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


-
Stoves List Archives and Website:
http://www.crest.org/discussion/stoves/200209/
http://crest.org/discussiongroups/resources/stoves/
>
Stoves List Moderators:
Ron Larson, ronallarson@qwest.net
Elsen L. Karstad, elk@wananchi.com www.chardust.com

Other Biomass Stoves Events and Information:
http://www.crest.org/articles/static/1/1010424940_7.html Bioenergy
http://www.crest.org/articles/static/1/1011975339_7.html Gasification
http://www.crest.org/articles/static/1/1011975672_7.html Carbon

List-Post: <mailto:stoves@crest.org>
List-Help: <mailto:stoves-help@crest.org>
List-Unsubscribe: <mailto:stoves-unsubscribe@crest.org>
List-Subscribe: <mailto:stoves-subscribe@crest.org>
>
For information about CHAMBERS STOVES
>http://www.repp.org/discussiongroups/resources/stoves/Chambers/Chambers.htm