[Stoves] Jatropha fruit as fuel?

[Bjarne Laustsen]

Dear Crispin
Thank you for your information on the Anglo Supra Nova stove, and also 
your advise regarding our stove.
The pictures there are on our website do not give a good impression of 
the stove when it burns, at least not for stovers.
Our marketing section wanted to get pictures with big flame so it looks 
impressive. However that is not the way it should burn.
On the pictures the Jiko Bomba stove burns with high amount of primary 
air. That is not the way we recommend households to use the stove as it 
is not economical and it will not burn clean.
When the stove is started the inlet for primary air in the bottom of the 
stove should be opened fully. As the fire catch on the primary air inlet 
is gradually closed, after around five minutes it will there will be 
only very little primary air. At that point the gasses from the pellet 
will burn by secondary air in the internal chimney in the top part of 
the stove. The flame will be blueish and not reach above the stove. I 
agree with you that flames should never touch the pot.
Burning like that there will be no smoke and there will be no sod on the 
pot.
When the stove is burning in gasification mode there will be no flames 
in the firebox that holds the pellets. So the pellet will be burning 
only heated up so gases can be released
After the gasification is finished normally 1 hour, then the top part of 
the stove can be taken off. the stove can then continue as a charcoal 
stove as the pellet will be laying as glowing charcoal pellets.
This gives another 30 - 40 minutes of heat.
So our stove works a little different from a usual gasification stove 
and also from the Anglo Supra Nova stove. I will think about how we can 
incorporate your suggestion into our stove. But I will definitely look 
into how we can make some better charcoal stove here for Tanzania based 
on the Anglo Supra Nova stove, as this for me look as a much better 
charoal stove design, than the present ones here in Tanzania
I will in a few days time send you some better pictures of the stove and 
how it works, but I at present have the problem that my usual PC have 
crashed so I do not at present have access to these pictures.

Yours
Bjarne Laustsen