Our site is dedicated to helping people develop better stoves for cooking with biomass fuels in developing regions.

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A loaded kinyanjui type barrel kiln carbonizing maize cobs
free fuel!
a full kin of maize cob and branch charcoal made in less the a day
the maize cob charcoal cooks with high heat and little smoke.

Four very good reasons why to make your own charcoal from dry maize cobs.

  1. They are FREE!! (minimal processing required and are widely available as a farm waste product)
  2. Maize cob charcoal is very easy to make and leaves few charcoal fines. (no need for expensive briquetting)
  3. They are easy to light and burn very hot with little ash and are perfect for cooking a quick meal.
  4. Using maize cob charcoal means ZERO reliance on tree's and forests, LPG gas or unreliable and expensive electricity supplies for your cooking fuel needs. And with a Cookswell Jiko you can bake, boil, roast and toast all of your favorite foods
File attachments: 
fuel briquette, bird seed briquette

Multiple uses for fuel briquettes..This is in from Nora Feldmar who, as part of her advanced degree in Holland, is introducing briquettes to an active Gypsy community in Hungary:

cheers all,

Richard Stanley
www.legacyfound.org

I have been looking into hand and foot powered tools and machinery for working sheet metal and light gauge sections. Attached is the presentation I've put together so far. It is a work in progress.

read the full pdf:
http://stoves.bioenergylists.org/files/metal_working_tools_and_machines.pdf

Quad 2 Stove

Paul Anderson, Centre for Research in Energy and Energy Conservation (CREEC)

The Centre for Research in Energy and Energy Conservation (CREEC) is a not-for-profit organization which works “to enhance access to modern types of energy through research, training and consultancy”.

The CREEC offers independent stove testing services, and has recently tested the Quad 2 Stove.

For the full test report and method see the pdf:
http://www.stoves.bioenergylists.org/files/quad_2_stove.pdf

The center tested the Quad 2 Stove and found that:
The Quad stove boils 5L of water in 27 minutes. To boil and simmer 5L of water, it uses 636g of dry wood and has an energy use of 11713kJ. It has a thermal efficiency of 42% during the high power phase and 41% during simmering. It has a turndown ratio of 1.4, an indication that the stove’s firepower can be controlled for different cooking regimes. Its fuel use is considered to achieve significant, measurabe health and environmental goals according to the Lima Consensus Tiers of stove ranking.

With regards to safety, the stove scored 77.5% and is rated GOOD and is considered a Substantial Improvement according to the Lima Consensus Tiers of stove ranking.

File attachments: 
Understanding Stoves Book Cover

Understanding Stoves is book about stoves written by Dr N Sai Bhaskar Reddy. This book is declared as 'Open Knowledge', Published by MetaMeta, Netherlands

http://www.metameta.nl/wordpress/wp-content/uploads/2012/10/Understandin...
or
http://www.metameta.nl/ link found in Home Page

File attachments: 

Christa Roth's excellent report
Micro-gasification: Cooking with gas from dry biomass

has a new location:
https://energypedia.info/wiki/File:Micro_Gasification_Cooking_with_gas_f...

Her comprehensive survey of micro-gasification technology has great technical information and is well worth the read.

thanks to GiZ (the German people) for making it available to all of us.

This study Putting the cook before the stove: A user-centred approach to understanding household energy decision-making from the Stockholm Environment Institute takes a look at existing cooking patterns in the Haryana State in northern India where several improved cooking stove projects have taken place.

In the study location, the researchers extensively interviewed householders about their stove building and cooking habits. In this area, Mothers and daughters often build portable or fixed place Chulha stoves that they use to burn dung, wood and straw. The authors did a great job of interviewing stove users and attempting to understand from the users point of view, why these unimproved mud stoves were used more often than the improved stoves that they had available.

Burning dung, is a vital part of the local economy and culture of this place, and the women cooking, use the dung for low simmering, in a purpose-built mud stove. It doesn't look like that stove usage was effectively replaced by the improved stoves that have been introduced in this area. The local cooks also pan fry and then bake roti, which they bake pretty easily in the local chulah stove, and the Philips and Oorja stoves don't have a place to do this baking.

It seems like cooks in this area don't mind having multiple stoves for different purposes, and this type of study is essential to understanding what the cooks needs are before we try to address those with improved stoves.

PelletMaker PM 75E  PM 44E, PM 22E

EcoWorxx in Germany is selling a line of pellet makers that take materials from dry, chopped fuel to complete pellets that are suitable for use in stoves and other applications.

Institutional Stove Solutions - InStove

Aprovecho's larger stoves - the instiutional stoves group, have now branched out and become

Institutional Stove Solutions (inStove)

http://instove.org/

They are using the same rocket stove, and have perfected a 60L stove for institutional stove.

They are focusing on schools and other institutions, and have attached an autoclave for hospital and clinic use.

They've found a way to do "Stove factory in a Box", and have perfected a way to build the stove with local labor, and with all tools provided in the factory box and requires only a small generator to operate long term.

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