June 2010

Gustavo Peña, June, 2010

Buenos dias aqui te mando información sobre mis modelos, el primer modelo que elaboramos fue con la colaboración directa del Dr. e Ingeniero Larry Winiarski diseñador de la cámara de combustión Rocket, el Ing. Winiarski es muy conocido entre los que trabajamos con estufas ecológicas, puedes buscar los 10 principios de la combustión en internét, el problema que algunos de los que nos apasiona trabajar en el tema, no respetamos ni la mitad de estos pricipios y el resultado es catastrófica, hay muchas estufas no solo en mi país el salvador sino en el mundo entero que tienen una apariencia muy bonita, pero solo es maquillaje y lo peór de todo es que muchas organizaciones las construyen porque es mas un negocio para sus organizaciones que beneficio a la salud y al medio ambiente, gracias a los conocimientos del Ing. Winiarski a su ayuda personal y al apoyo financiero de StoveTeam International www.stoveteam.org he logrado desarrollar varios modelos que puedes ver en youtube aqui te mando los link y si necesitas mas información con gusto se las proporcionaré. Aquí te mando también el último modelo que acabo de desarrollar es la Ecko3 (por los tres quemadores) y los resultados de laboratorio de la cámara de combustión rocket

ecocina y salud el salvador
http://www.youtube.com/watch?v=R6Q_j2S1KUg

ecocia paso a paso
http://www.youtube.com/watch?v=2fmp23SdS2Y

reportaje en un canal americano
http://www.youtube.com/watch?v=STt1I8gRkp0

cocina escolar
http://www.youtube.com/watch?v=7AFq0PbYQcM

conina de 2 quemadores
http://www.youtube.com/watch?v=_IyVcH0FH_0

See the Full Report, and Power Point Summary:

The Energy Access Situation in Developing Countries
A Review focusing on the Least Developed Countries and Sub-Saharan Africa

\WHO-2009-Energy-p10.jpgNike News

Doug Barnes, at the World Bank June, 2010

There are 3 billion people in developing countries that rely on solid fuels for almost all of their cooking. The question can be asked how many of these over 800 million households cook with an improved stove? The answer comes from a new study by the World Health Organization (WHO) and the United Nations Development Programme (UNDP). Like any good mystery story you will have to skip to the end for the answer. All I will say is that the results may surprise you.

Doug Barnes Complete Article: Improved Stoves in Developing Countries by the Numbers


The statistics in Doug Barnes' article are drawn primarily from this WHO United Nations report, which has some Great Information about Biomass Energy use and the Health Impacts of that use.

The "Energy Access Situation in Developing Countries - A Review focusing on the Least Developed Countries and Sub-Saharan Africa" report draws attention to the energy access situation beyond the conventional focus on electricity, especially in poorer developing countries where access is the most constrained.

Main topics covered by the report include:

  • Energy access situation in LDCs and Sub-Saharan Africa, including access to electricity and modern fuels
  • Fuels and improved stoves used for cooking in developing countries
  • Health impacts attributable to indoor air pollution from household use of solid fuels for cooking and heating
  • Developing countries with modern energy access targets, and
  • An analysis of different energy access scenarios for 2015, to estimate the progress in energy access that will be needed for the achievement of the Millennium Development Goals (MDGs)

Some Key Points from the report

Access to modern energy services is still low in developing countries and
this lack of access disproportionately affects Least Developed Countries (LDC)s and Sub-Saharan Africa (SSA)

  • Three billion people, i.e. almost half of humanity, rely on solid fuels –traditional biomass and coal – as the available modern energy services fail to meet their needs. More than 80% of people in LDCs and SSA primarily rely on solid fuels, compared to 56% of those in developing countries as a whole.
  • Two million deaths per annum are associated with the burning of solid fuels indoors in unventilated kitchens. Children bear 44 percent of this toll, and among adults women bear 60 percent of the burden.
  • Almost a quarter of the world’s population still lives in darkness; over 80% of them in South Asia and SSA. More than 70% of people in LDCs and SSA lack access to electricity, compared to28% of those in developing countries as a whole.

Lee Hite, June, 2010

Measured Drawings are on his site: http://home.fuse.net/engineering/ewb_project.htm

As an alternative to the large compound lever briquette press, here is a small version (Micro Compound Lever Press) that will generate the same or more pressure to make a high quality briquette, is made from wood with hand tools and can produce briquettes at a rate of about 12 in 10 minutes. This would work well in a single family setting, as a classroom demonstration tool, or for any application requiring simplicity and a small footprint.

See demonstration for this press and two others at http://www.youtube.com/watch?v=Mt0QQe6Eetw

See measured drawing at http://home.fuse.net/engineering/ewb_project.htm

Marc Pare, June, 2010

Three friends and I spent last semester at Georgia Tech working on the thermodynamic modeling (and optimization) of cook stoves... I attached a summary of our project and the meat of the analysis section and the Full Report (see the attachments)


TOWARD END-TO-END IMPROVED COOK STOVE OPTIMIZATION

By Marc-Antoine Paré, Matt Redmond, Christopher Beebe, and Nick Kretschmar

While it is possible to build and test the performance of prototype Improved Cook
Stoves without significant capital investment, if the amount of time that it takes to
optimize candidate stove designs could be drastically reduced, then cook stove
technology could reach the hands of many more in developing nations. It was identified
that an end-to-end modeling and optimization effort for Improved Cook Stove (ICS)
design could aid in the development of more efficient and cleaner-burning stoves. The
thermodynamic and heat transfer processes underlying cook stove performance are
tightly coupled, which makes modeling a challenge. The following analysis is a first
attempt at capturing each of the underlying processes of stove performance. The model is
formulated so as to facilitate the optimization of stove geometry. This effort helps
pinpoint the deficiencies of the current state of stove modeling and attempts to
demonstrate the eventual power of a predictive stove model.

Ken Goyer discussing Uganda, Darfur and Stove projects

Stove Camp 2007   P7180172

Dear friends,
We shouldn't lose sight of why we are making stoves and for whom
we are making stoves. The ultimate TEST of the stove is whether or not
it is accepted and used. The woman must be able and willing to use the
stove. The best stove in the world will go for naught if it is
rejected by the consumer. One half of the people in the world live in
cities. They don't go out and cut their own fuel. Their fuel is offered
to them in the marketplace. Most people are unimaginably poor, and at
their wits end. Fuel is chosen because it is expedient. Many places
lack industrialization and infrastructure such as transportation. Even
in the country, people need to burn what they can find and often don't
have much choice. It seems to me that a woman who hauls fuel on her
head, sometimes for miles, would prefer to maximize it's use rather than
haul the charcoal back to her fields. What we can do is to present
choices. But if these choices are to see fruition, we need to think
through the whole equation. How much does it cost? Is it practical?
Will it help? As well as "is the combustion and heat transfer in my
stove better than the combustion and heat transfer in your stove?"
Let's remember that the customer is always right (whether they are
paying or not), and they have the final vote :-).
Best regards, Ken Goyer

from Ken's Message The Ultimate Stove Test http://listserv.repp.org/pipermail/stoves_listserv.repp.org/2007-October...


See some of his Many projects and contributions

Art Donnelly, SeaChar.Org June, 2010

It was not quite 9 months ago, when I sent out an email to a small group of collaborators, with a Subject line that asked the question: "How do we get biochar stoves to Central America?" Of course, like the punch line to the old vaudeville joke, the answer is "lots of hard work". I could not have imagined 9 months ago was how rewarding all that work would feel. I want to share that feeling with all of you.

I recently returned to Seattle from Costa Rica's famed coffee producing area the Santos Zone. This was my second trip since mid- January. I have been continuing my work as a technical consultant to a clean stove/biochar project. Proyecto Estufa Finca (Farm Stove) was initiated by organic coffee farmer Arturo Segura http://www.solcolibri.com/ and the members of the local citizens group APORTES.