[Gasification] AIT top-down burning stove

[psanders at ilstu.edu]

Dear Professor,

My apologies.  I let the IGS-2 info dominate, and I overlooked the "top-down
burning" stove.  Yes, it could well be a TLUD style.

I need some assistance to find more information about that top-down burning
stove.  The website has 18 substantial reports.  And the "top-down burning"
stove is not in the "Technology Package: Screw-press briquetting...."  Please
direct me (us) to more information than what is on the photo gallery page.

I am quite interested in the origins of that top-down burning stove in 
relation
to TLUDs initiated by Tom Reed.  I know about the work by Mr. Punchibanda of
Sri Lanka, but he has not provided me with information about how he got 
started
with what has become known as TLUD gasifiers.  But Mr. Punchibanda definitely
influenced Mr. Alexis Belonio of the Philippines who has done great work with
the TLUD gasification of rice husks (raw, not as briquettes.).  I am also on
the trail of one possible true TLUD in China, but that is another 
story, unless
maybe they were influenced by your work.  So, I request your assistance.

Any chance you or Mr. Punchibanda or Mr. Belonio being at the PCIA meeting in
Bangalore on 20 to 24 March?

With sincere appreciation of your excellent work on cookstoves and gasifiers.

Paul

Quoting "Prof. S.C. Bhattacharya" <sribasb at gmail.com>:

> Before retirement from the Asian Institute of Technology (Thailand), two
> stoves were developed under a Sida-funded regional project. The stoves are
> briefly described below and their photographs are attached. The descriptions
> and photographs and much more information on the prtoject can be found at
> http://www.retsasia.ait.ac.th/photogallery.htm
> Dissemination booklets giving design of some stoves are also abailable at
> http://www.retsasia.ait.ac.th/booklets.htm. Information on stoves and
> briquetting is available in the Technology packages on screw-press
> briquetting machines and briquette-fired stoves.
> The top-down burning stove is basically similar to the TLUD stove it seems.
>
> --------------------
> 1) The Institutional Gasifier Stove (IGS-2) consists of five main parts: a
> fuel storage hopper, reaction chamber, primary air inlet, combustion chamber
> and a 2-pot support. Experimental results indicate an average efficiency of
> 17% with ricehusk briquettes (two-pot configuration), 27% with wood chips
> and 22% with wood twigs as fuel. The stove appears to be promising for
> community type cooking, particularly for institutional kitchens and
> traditional cottage industries.
>
> 2) The top-down burning appears to be able to burn biomass with much less
> smoke compared with conventional burning. In top-down concept, some kindling
> is put at the top of the fuel bed and ignited. The fire moves progressively
> down through the layers of the fuel. The main advantage of the top-down
> concept is minimal smoking. The two-pot top-burning stove jointly developed
> by the Institute of Energy, Vietnam and AIT, Thailand could use ricehusk
> briquettes and wood chips/twigs as fuel.
>
> S.C. Bhattacharya


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