[Stoves] Jatropha and its future

Sun Aug 7 22:40:34 CDT 2011

Dear Roger

Alex English can comment on the corn burning, but I think it is from ash
melting that you get the clinkering. Sugar burns really well at a low
temperature.

With all crops, there are many tons that are spoiled for various reasons.
Therefore there is always a market for them. Aflatoxin (and zearalanone)
contamination is a problem in some countries and it would be good if it were
burned rather than fed to slightly more tolerant animals. That stuff is bad
news. 

Mouldy maize is usually mixed with good maize to meet some local standard
but still, there is a lot that can't be used for food or feed. So, into the
fire. Rancid grains, rotten wheat, mouldy oats - we should turn them into
fuel as it is biomass and already pelletized!

The advantage of using glycerine is that it doesn't spill well and kids are
unlikely to drink it. Like gelled alcohol, it melts at just the right
temperature and could me a good fuel. Could you get a smell-less burn? That
would be an indication the burn was good for a start.

There is a wax burning stove developed in South Africa and Sasol (Sasolwax
in an earlier name) was interested in it generally, and developing their own
stove commercially, which I have never seen in the wild. There is a lot of
leftover wax from various industrial processes, just as there are many
alcohols left over from sugar making - like 100 types! Into the fire!

Regards

Crispin

++++

Interesting idea........Are the any records kept on how cleanly and or how
much maintenance might be involved. Example.....corn feed stoves have allot
of klinkering due to the sugar content if I understand correctly. We might
be able to utilize more of these fuels than I realize at this point as I
have not had enough time to test these things out. Our focus has had to stay
more narrow than I would like due to the "business side" of our growth. I
did for a while mess with burning Glycerine from bio diesel manufacturing.
Althoe I have not dismissed this avenue I do feel it is a messy process. The
glycerine heats up and "melts" much like paraffin wax and could become a
fire hazard. I am interested as I am coming to a point of less business and
more inventing to try alternative fuel sources......any ideas???
Thank you R&B  

  _____  

From: crispinpigott at gmail.com
To: stoves at lists.bioenergylists.org
Date: Sun, 7 Aug 2011 14:36:59 -0400
Subject: [Stoves] Jatropha and its future

Dear Friends

I am not sure how many stove are being worked on as Jatropha seed or oil or
cake burners, but my understanding was the main thrust was to put to use
some of the leftovers from biofuel production, especially that was the focus
in Tanzania.

It seems those farmers who invested in Jatropha production lost about $65
per ha http://pubs.acs.org/doi/full/10.1021/es201943v so my question is
whether or not there is much point in working on (perhaps) whole seed
stoves. Perhaps if the J-oil industry suffers a quick death there will still
be a meaningful supply of oily seed fuel that  can be burned relatively
easily with a decent performance and controllability. At least until they go
back to sunflower which looks a lot more promising.

Has anyone made a sunflower seed burning stove? The oil runs up to 49% on
some varieties.

Always looking for new ideas.

Regards

Crispin

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