[Stoves] Charcoal Rocket Stove

Mon Apr 30 05:15:18 CDT 2007

Dear Dean and all charcoal stovers,

You wrote:

"We will be testing more charcoal stoves soon and I'll get back to the list
with our findings. I'd be very interested in your experiences experimenting
with a Rocket type charcoal stove."

1. Inspired by your tall clay/sawdust rocket type charcoal stove, I used a
galvanized iron metal sheet formed into a 6.25" diameter 11 inches tall as
burner; got 5 liters into a rolling boil in under 23 minutes; ambient
temperature was 28C and Manila is at 69 ft above sea level where I live is
about 120 ft above sea level (guestimate). Fuel was a little under 500 grams
of lump wood charcoal. It performed like you clay/sawdust rocket with
turbulent flames above the rim for a few minutes.

2. Believing Dr. Paul Anderson, I made sure that there was a good amount of
space between pieces of charcoal by using larger pieces (about 3 to 4 cubic
inches mostly).

3. I was a bit discouraged by Dr. Tom Reed's comment about charcoal being a
"red herring" but Crispin Pemberton-Pigotts comments about charcoal
increasing availability from non-tree sources encouraged me to continue
experimenting with charcoal stoves.

4. To me the key problem is still mainly to persuade urban and rural poor
housewives to spend a bit more on a higher priced charcoal stove for
economic benefits and reduced health risks that is hard for them to imagine
or see (observe with their senses). Or alternatively, to produce a charcoal
stove that retails for US $ 1.50.

Thanks,

Cornelio

On 4/28/07, Dean Still <dstill at epud.net> wrote:
>
> Dear Cornelio,
>
> My experience is limited to four stoves, the Ghana stove, a metal stove
> like
> it from Mali, the Rocket and traditional type stoves from Africa and
> Haiti.
> The Rocket was fastest because there is a lot of draft resulting in higher
> power. I have observed that emissions do go down in a Rocket type stove
> AFTER the chamber gets hot AND when there are air holes between the chunks
> of charcoal. I did not see any additional benefit to adding secondary air.
>
> We will be testing more charcoal stoves soon and I'll get back to the list
> with our findings. I'd be very interested in your experiences
> experimenting
> with a Rocket type charcoal stove.
>
> All Best,
>
> Dean
>
> -----Original Message-----
> From: stoves-bounces at listserv.repp.org
> [mailto:stoves-bounces at listserv.repp.org] On Behalf Of cornelio torrijos
> Sent: Friday, April 27, 2007 2:14 AM
> To: Discussion of biomass cooking stoves
> Subject: Re: [Stoves] Charcoal Rocket Stove
>
> Hello Mr. Dean Still and all,
>
> I look forward to your reports from you coming Ethos Stove Camp this
> coming
> July.
>
> Thank you for posting a video of your comparison of the charcoal rocket
> stove and the Ghana stove. I have viewed it again and again to find
> features
> that might help me make a better charcoal stove.
>
> It was mentioned in video that time to boil was 27 minutes for the rocket
> and 34 for the Ghana. Which factors to you believe contributed most to the
> faster boil time of the rocket? Do taller and narrower charcoal stoves
> result in better and more complete combustion? The rocket charcoal stove
> had
> no provision for entry of secondary air before the exit hole, does this
> mean
> that it is not really needed?
>
> Which charcoal stoves that you tested has resulted in the fastest 5 liters
> water boil time?
>
> Thanks.
>
> Cornelio
>
> On 4/17/07, Dean Still <dstill at epud.net> wrote:
> >
> > Dear STOVERS!
> >
> > ETHOS Stove Camp will be held July 16-20 at the Aprovecho lab in
> Creswell,
> > Oregon which is 180 miles north of the California border right off of
> I-5.
> > (10 miles south of Eugene.) We have several participants signed up who
> > helped to firm up the dates.
> >
> > We can continue the work on stoves and Global Climate Change begun last
> > year.
> >
> > There will be a two day "Introduction to Almost Everything about Stoves"
> > (Monday-Tuesday) for those who could use a comprehensive but quick
> > summary.
> > It will be taught by Aprovecho staff and others. A parallel session will
> > run
> > at the same time. The theme of the session is:
> >
> > A competition to combine heat transfer and combustion efficiency
> resulting
> > in the most fuel efficient, least polluting, most cost effective, best
> > liked
> > natural draft cooking system (Stove/Pot). (No hayboxes) PRIZE OF $250.
> And
> > a
> > beautiful award.
> >
> > Stoves should be designed and built on site.
> >
> > Stoves will be tested under the emission hood. And by local good cooks.
> > Winner determined by votes from participants.
> >
> > Photos and descriptions of the cooking systems and results will be
> > published
> > on the List.
> >
> > Camping and inexpensive hotels are available. We'll also go sailing
> > sometimes in the late afternoons.
> >
> > Cost is $100 for students. $200-$500 for others (Sliding Scale)
> >
> > Hope to see you there!
> >
> > Best,
> >
> > Dean
> >
> >
> > -----Original Message-----
> > From: Sandra Moen [mailto:yogalive at earthlink.net]
> > Sent: Monday, April 16, 2007 10:14 AM
> > To: Shiroff,Samuel Neal (VB 3)
> > Cc: Dean Still; Nordica MacCarty
> > Subject: Re: Stove Camp '07 - Final Dates
> >
> > Samuel,
> >
> > Stove Camp '07 is set for 16 July - 20 July, 2007.
> >
> > We are looking forward to giving you a great introduction
> > to stoves.  Dean says "Hi!  It would be great to test your
> > stove.  We could work on it while you are here."
> >
> > More details will follow.
> >
> > Best regards,
> >
> > Sandra Moen
> > Business Manager
> > Aprovecho Research Center
> >
> >
> >
> >
> > -----Original Message-----
> > >From: "Shiroff, Samuel Neal (VB 3)" <Samuel.Shiroff at BSHG.COM>
> > >Sent: Apr 16, 2007 12:26 AM
> > >To: Sandra Moen <yogalive at earthlink.net>
> > >Cc: Dean Still <dstill at epud.net>, Nordica MacCarty
> > <nordica.maccarty at gmail.com>
> > >Subject: Stove Camp '07 - Final Dates
> > >
> > >Sandra,
> > >
> > >After a great deal of calendar coordinating and negotiating, we have
> come
> > to
> > >the conclusion that in 2007, only I will be able to make it to
> > Oregon.  My
> > >colleague will have to wait until the following year.
> > >
> > >I could fly from New York on the 15th of July and begin that
> > >afternoon/evening.  I would plan to be around for at least 3 days.  I
> > could
> > >also make the timing for any point during that week.
> > >
> > >Not sure if this fits with your plans, but I hope that it does.  August
> > >simply does not work this year. I will be in New York and DC in July
> and
> > >this makes the most sense.  A second 14 hour plane ride will be too
> much.
> > >
> > >Please let me know if those July dates work.
> > >
> > >Regards,
> > >Sam
> > >
> > >********************************************
> > >Samuel N. Shiroff
> > >BSH Bosch and Siemens Hausgeräte GmbH
> > >Carl-Wery-Strasse 34
> > >81739 Munich
> > >Germany
> > >T: +49 89 4590-3039
> > >F: +49 89 4590-5079
> > >E: samuel.shiroff at bshg.com
> > >www.bsh-group.com / www.plantoilcooker.org
> > >
> > >Protos. The Plant Oil Stove.
> > >An Initiative of Bosch and Siemens Home Appliances Group.
> > >
> > >BSH Bosch und Siemens Hausgeräte GmbH, Carl-Wery-Str. 34, 81739 München
> > >Vorsitzender des Aufsichtsrats: Rudi Lamprecht
> > >Geschäftsführung: Dr. Kurt-Ludwig Gutberlet (Vors.), Dr. Wolfgang
> > Colberg,
> > >Jean Dufour, Prof. E.h. Werner Vogt
> > >Sitz: München; Registergericht: Amtsgericht München, HRB 75534;
> > >WEEE-Reg.-Nr. DE 57986696
> > >
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> > >
> > >-----Ursprüngliche Nachricht-----
> > >Von: Sandra Moen [mailto:yogalive at earthlink.net]
> > >Gesendet: Dienstag, 3. April 2007 21:18
> > >An: Shiroff, Samuel Neal (VB 3)
> > >Cc: Dean Still; Nordica MacCarty
> > >Betreff: [RMX:#] Aprovecho Research Center - Stove Camp '07
> > >
> > >Dear Mr. Shiroff,
> > >
> > >My name is Sandra Moen.  I am the Business Manager for Aprovecho
> > >Research Center.
> > >
> > >ARC has begun planning Stove Camp 2007, and Dean Still tells me that
> > >you may be attending.  Dean has asked me to make sure that Stove Camp
> > >is scheduled when it will be most convenient for you, and that the
> format
> > >provide you with the most educational and informative experience
> > possible.
> > >
> > >Would you please suggest dates in August that would work with your
> > schedule?
> > >
> > >Stove Camp usually lasts for four days.  If you can only attend for a
> > couple
> > >of days, we will work around your schedule.
> > >
> > >Also, Dean suggests that you may want ARC to test your stove prior to
> > Stove
> >
> > >Camp; we would be happy to conduct a series of three tests and submit a
> > >report summarizing the test results.  Of course, we would sign a
> > >Non-Disclosure
> > >Agreement.  If desired, please ship the stove model to the following
> > >address:
> > >
> > >Aprovecho Research Center
> > >195 North Mill Street #1
> > >Creswell, Oregon  97426
> > >
> > >If you have any questions or need further information, please let me
> > know.
> > >
> > >Best regards,
> > >
> > >Sandra Moen
> > >Business Manager
> > >Aprovecho Research Center
> > >(541) 895-5677
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
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