[Stoves] Jatropha and its future

Tue Aug 9 12:03:41 CDT 2011

Roger, 

A friend just sent me this link and a reminder that the $25 I quoted you was
the discount for seniors, low income persons and students.  Apparently
everyone else pays $60.00.  Still a bargain.

http://www.vrac.iastate.edu/ethos/conference.php

Jan

  _____  

From: stoves-bounces at lists.bioenergylists.org
[mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of Fireside
Hearth
Sent: Monday, August 08, 2011 9:07 AM
To: stoves at lists.bioenergylists.org
Subject: Re: [Stoves] Jatropha and its future

AHHH that makes more sense now. So as a new guy on the block with a new toy
to share I am interested in the Ethos conference. Is this open to anyone or
is it an invite only type of thing? I understand this is held in Kirkland
Wash. (close to my home) and what sort of costs are associated? We would be
excited to share our new technology in an environment such as this. Could
you give me more info? 

        Thank you for responding! 
              Roger and Bridget Lehet

  _____  

From: janbianchi at comcast.net
Date: Mon, 8 Aug 2011 08:56:48 -0700
To: stoves at lists.bioenergylists.org
Subject: Re: [Stoves] Jatropha and its future

Roger

That stove in the ETHOS pictures was a prototype version. The stove is now
made from steel. 

Jan

Sent from my iPhone

On Aug 8, 2011, at 8:51 AM, Fireside Hearth
<firesidehearthvashon at hotmail.com> wrote:

Good morning....

I am curious about a couple of the pictures of the stove by Otto....do I see
galvanized sheet metal used in area's of high heat? the text talks about
800deg C. (1472 f.) if there is galvanized materials in contact with these
temps it is quite possible that galvanic poisoning could kill the operator.
A friend of mine was welding inside a galvanized pipe (large culvert for
water drainage) when his oxygen mask failed and a green colored gas entered
his lungs causing him some of the most horrible pain and near death
experience imaginable. The other question I have is the material thickness.
It does not look like this will withstand these temperatures for long. What
is the life expectancy of this unit when exposed to these temps. Does it
make sense to build something a bit more stout and send less of them to the
land fill as the "burn out" too quickly with these exposures. Not all ways
can we value things simply on "cost per unit" but "cost to the environment"
should be taken into account. After looking at the industrial area's of
northern China it seems to me that it is the environment which is paying for
our "cheap" flat screens.  

  _____  

From:  <mailto:janbianchi at comcast.net> janbianchi at comcast.net
Date: Mon, 8 Aug 2011 08:08:37 -0700
To:  <mailto:stoves at lists.bioenergylists.org>
stoves at lists.bioenergylists.org
Subject: Re: [Stoves] Jatropha and its future

Jet City StoveWorks is currently conducting kitchen tests of the jatropha
seed stove Marc refers to in Tanzania.

  Jatropha grows wild throughout the tropics as well as recently as
biodiesel  crop there. Alternatively, and more productively,  it can be
grown as a hedge around land holdings so it need not displace land for food
production.  That produces enough seed to fuel the family cookstove for a
year as well as have some left over to sell into the Jatropha market. It
costs at least four times less than a comparable burn time for wood and six
times less than charcoal.

We are continuing CO and PM testing and hope to have our test results online
by next month.  We had a stove at Aprovecho's stove camp couple of weeks ago
and will have one at Paul Anderson's TLUD camp in MA in August. 

Sent from my iPhone

On Aug 8, 2011, at 2:10 AM, Marc Pare < <mailto:mpare at gatech.edu>
mpare at gatech.edu> wrote:

Crispin, re exisiting Jatropha stoves:

There was this one at ETHOS this year by J. Otto and friends:

<http://www.vrac.iastate.edu/ethos/proceedings2011/OttoOttoCovert_JatrophaSe
edCookingStoveDevelopmentPromotion.pdf>
<http://www.vrac.iastate.edu/ethos/proceedings2011/OttoOttoCovert_JatrophaSe
edCookingStoveDevelopmentPromotion.pdf>
http://www.vrac.iastate.edu/ethos/proceedings2011/OttoOttoCovert_JatrophaSee
dCookingStoveDevelopmentPromotion.pdf

and a quick picture of it running outside in Kirkland:

<http://smallredtile.tumblr.com/post/3246717546/marc-in-the-wild-there-were-
many-arguments-about>
<http://smallredtile.tumblr.com/post/3246717546/marc-in-the-wild-there-were-
many-arguments-about>
http://smallredtile.tumblr.com/post/3246717546/marc-in-the-wild-there-were-m
any-arguments-about

It burns whole seeds in a natural draft TLUD. Draft is augmented by an inner
air pipe (lots of pictures of the assembly in the ETHOS presentation)

Marc Paré
B.S. Mechanical Engineering
Georgia Institute of Technology | Université de Technologie de Compiègne

my cv, etc. |  <http://notwandering.com>  <http://notwandering.com>
http://notwandering.com

On Mon, Aug 8, 2011 at 1:36 AM, Crispin Pemberton-Pigott <
<mailto:crispinpigott at gmail.com>  <mailto:crispinpigott at gmail.com>
crispinpigott at gmail.com> wrote:

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>
<http://pubs.acs.org/doi/full/10.1021/es201943v>
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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