Improved Biomass Cooking Stoves

Stuart Conway, May 2010

Trees Water and People has been working with the Dr. Jennifer Peel of the Colorado State University School of Public Health on a longitudinal study of improved cooking stoves in Granada, Nicaragua.

There is a nice article describing this on the Colorado School of Public Health web site, read The Killer in the kitchen

There's some additional information on the CSU Nicaragua Cook Stove Project web site.

USAID, February 2010

Please See the Full Report for details

Introduction to study and tested stoves
The purpose of this study was to obtain information on the potential suitability of a new

From Stuart Conway and Rogerio Miranda

Hola companeros,

Mandanadose un reporte algo grande, pero de interes sobre el trabajo que hice Rogerio y Winrock introduciendo una estufa tipo Justa pero modificado para Peru, la Inkawasi

Download the Complete Report PERU HEALTHY KITCHEN_HEALTHY STOVE PILOT PROJECT

Testing of the Anila stove in Cambodia 03.05.2010
Sarah Carter and Vichida Tan, UK Biochar Research Centre

See http://www.bioenergylists.org/content/testing-andersons-tl for a similar test on Anderson's TLUD, and http://www.bioenergylists.org/content/testing-everythingni for testing of EverythingNice stove.

Testing of the EverythingNice in Cambodia 30.04.2010
Sarah Carter and Vichida Tan, UK Biochar Research Centre

See http://www.bioenergylists.org/content/testing-andersons-tl for a similar test on Anderson's TLUD and http://www.bioenergylists.org/content/testing-anila-stove for tests on the Anila stove.

A charcoal oven in the kitchen of the Karen Blixen Camp, Maasai Mara.

They use it because it;
a) saves alot of money on buying LPG (fossil fuel)
b) cooks food really really well!

And it only uses a handfull of charcoal thanks to insulation and the ceramic liner!

to buy one please see

www.kenyacharcoal.blogspot.com

we also offer international shipping
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Testing of the Anderson TLUD in Cambodia 27.04.2010
Sarah Carter and Vichida Tan, UK Biochar Research Centre

Similar tests have been carried out on the Anila http://www.bioenergylists.org/content/testing-anila-stove and EverythingNice stoves http://www.bioenergylists.org/content/testing-everythingni.

Rochester Institute of Technology: Develop Thermoeletric Stove Test Methods and Capability
Robert Stevens, Brain Thorn

Project Summary

According to the World Heath Organization more than three billion people depend on biomass fuels (wood, dung, or agricultural residues) primarily for cooking. The practice of cooking with biomass has decimated many ecosystems and requires an enormous amount of human effort to gather. In addition, there is considerable evidence that exposure to biomass smoke increases the risk of common and serious diseases in both children and adults. According to the WHO studies, indoor smoke from solid fuels causes an estimated 1.6 million deaths annually.

To minimize these harmful effects associated with cooking more efficient cook stoves have been proposed. These new stoves are significantly more biomass fuel efficient and thus reduce deforestation rates. These enhanced stoves also reduce indoor air pollution, thereby reducing deaths and illnesses due to biomass cooking.

RIT is working with an NGO partner in Haiti, H.O.P.E., and funded by an EPA Energy Research Grant to develop an enhanced stove. Concurrent with this team's work, a separate group will develop stove concept, design it, and create prototypes. This project is to develop a series of stove measurement and characterization methods and reduce them to practice. The mission of this project team is to define test methods relevant to the Haitian customer needs and, in addition, that quantifies the stove's fuel efficiency, cooking performance, and hazardous emissions in engineering terms.

Link:
Thermo-Electric Cook Stove

EPA Grant
Improved Cookstoves for Haiti

Alazar Tesfay, April, 2010

Currently, we are developing high power improved stoves for institutions.The key features of the design is adopted based on the household stoves developed and promoted by Debesai Ghebrehiwet in Eritrea. It lifts the fire chamber off the ground so the air can flow underneath through the perforated fire grates which held the fire chamber that increases the combustion efficiency and retains heat while raising the cooking pot to the hottest point above the flame. We got a fantastic result from the heat transfer efficiency point of view. But we faced a problem in Controlling the smoke which passes by the sides between the pot and the walls of the fire chamber. Do you have any idea how we can control such situations with out buying additional materials like Pot skirt.

Paul Olivier, April 2010

Today we put in operation for the first time the 250 gasifier with a stove top.
This gasifier has a single 2-inch pipe that vents housing air to a warmer grate.
This pipe had no butterfly valve or other restriction.
We used the same small 80x80 mm fan as in the 150 gasifier.
This fan had no problem at all supplying air to the reactor and to the 2-inch pipe.
The burn lasted almost an hour on rice hulls, even though the height of the reactor was no more than 70 cm, the same height as in the case of the 150 stove.
The warmer grate had sufficient heat from the housing to fry an egg, as indicated in picture 855.
We obtained a bright blue flame, as shown in picture 865,
although the camera did not have the right lighting to display it properly.
The stove top was not properly reinforced when a large pot filled with water was placed on top.
There was a deflection of a few mm's.
However this can be easily remedied with two more lateral braces underneath the stove top.
In conclusion, the 250 gasifier works well and delivers an enormous amount of heat.