Biomass Stove Design

MJA Biomass Gas Stove
Alexis Belonio, July 23, 2008
MJA Biomass Gas Stove Burning Coal

Alexis Belonio writes (edited and annotated by Paul Anderson and Tom Miles):

Attached is a picture of my latest coal gasifier stove. This
is the same basic TLUD stove I have for wood charcoal and wood chunks.

For domestic use, I use carbonized coal (or coke) as fuel instead
of the raw coal. Coal can be used for the stove, but we don't want to promote
this as a fuel since it emits poisonous gas. I would prefer to use coal for
industry application where gas can be cleaned before it is released to the
atmosphere.

I provide only a small amount of coal fuel in the gasifier stove, enough
for cooking. This mean that the power output is only small and the
metal I use is a stainless steel.

I ignite the carbonized coal by using a wood charcoal that has been soaked in
kerosene as igniter. [This is a TLUD stove, so ignition is at the top.]

[In the Belonio TLUDs, the fan only blows the primary air. The
secondary air is
pre-heated as it rises naturally between the fuel cylinder and the outer
cylinder, finally exiting into the rising flow of combustible gases.]
The smoke in the coal gasifier I have was eliminated [combusted] by mixing
preheated air with the gas generated from the reactor. I think
there is no need of [forced] mixing the secondary air by creating turbulence
with the combustible gases. Because in that case, you will need a
slightly bigger fan with enough pressure to push the air.
MJ Biomass Gas Stove

Alexis Belonio
atbelonio@yahoo.com

Agencia de Servicios Informativos de Chiapas (ASICh): En cumplimiento a la Política Social del Gobierno de México, la Secretaría de Desarrollo Social (SEDESOL), delegación Chiapas, hizo entrega de 100 estufas ecológicas Onil, al igual mismo número de familias de Zinacantán, siendo este el primer municipio de la República Mexicana en recibir este beneficio.

Al respecto la delegada de la SEDESOL en el estado, Gloria Luna Ruiz, indicó que con ésta entrega se están beneficiando a 500 personas, señaló que el costo por estufa es de mil 365 pesos, además de que cada familia recibió una dotación de blocks para instalar sus fogones, con un recurso total por parte del gobierno federal de 143 mil 463 pesos.

Estufa Onil, Zinacantán Chiapas

Stoversource: One Door Rocket Stove

Dean Still, Stoversource, May 2008

Dean Still shows off the new one door rocket stove designed by Aprovecho Research Center and being made in China.

Stoversource
http://www.stoversource.com