This site exists to help people develop better stoves for cooking with biomass fuels in developing regions.
Our site is dedicated to helping people develop better stoves for cooking with biomass fuels in developing regions.
For additional detail and information, join the Cooking Stoves Mailing List, browse the archives, read about current projects and ask other cooking stove builders, designers, and organizations disseminating improved stoves around the world.
On a recent trip to Haiti, I completed the first prototype of a new school rocket stove. This one has a 330 stainless steel liner, 2½" insulating firebrick walls, and galvanized steel outer shell. The skirt is 304 stainless inside, 1" ceramic fiber walls, and galvanized steel outer. The mouth and firebox are 6½" x 6½". The pot is 40 qts with the top diameter about 1/4" larger than the diameter near the bottom, and is imported. The locally available spherical bottom pots made skirt construction extremely difficult. We hope to someday produce this stove in quantity at a combined vocational school/stove factory.
In my continuing quest to use readily available manufactured materials for stove construction, here is the steam pan charcoal stove with "perforated lollipop" air control. It is a 1/6 size steam pan (roughly 6" x 7" x 4" deep) inside a 1/2 size (roughly 10" x 12" x 6" deep) with 1" ceramic fiber board insulation between. The charcoal chamber is lined with expanded stainless steel to extend the life of the inner pan and improve air flow. Army surplus D rings are used for pot supports. Threaded rod for legs. It can be easily disassembled for repair. It has a small charcoal capacity like the BURN's Jikokoa (formerly Tank).
I plan to eventually build a two burner version in a full size steam pan.b
On my trip to Haiti in March 2016, I finished the ammo box stovetop oven. It is made with two ammo boxes, ceramic fiber board insulation, some stainless steel sheet, and various hardware. The oven chamber is 13" x 13" x 5". I plan to add split firebricks on the floor for use as a pizza oven. It fits on a household rocket stove but could be used over virtually any heat source.
Manufacturing is helping improve the lives of women and girls in East Africa with its efficient charcoal-burning Jikokoa™ stove and opportunities for women to participate in its workforce. The stove itself represents a step-change in the design and efficiency of charcoal-burning cookstoves. As well as being an aspirational household product, it cuts down on smoke and soot by more than 60% compared to the widely used Kenya ceramic jiko. But it’s not just women using the stoves who benefit. With all manufacture now done in a new state-of-the-art factory in Kenya, BURN emphasises that all jobs are open to both men and women at all levels – just over half of its workforce are women.
Jo Kennard in Australia has developed a retained heat cooker the Easy Oven, and has developed an excellent table of recommended cooking times and recipes to go with it.
Inspired by traditional Haybox cookers, and made from modern materials, the EasyOven saves between 86% - 90% of energy used while cooking meals, keeps food hot (or cold) for up to 3 hours. It was field tested during the Christchurch earthquakes and the Brisbane floods, and it is at home both in rural kitchens and in suburban potlucks. For More information see http://www.easyoven.com.au
The inverted pyramid rebar stove is ubiquitous in Haiti. Lots of radiation and convection away from the pot. No air control. Pot is often placed directly on the charcoal which quenches the charcoal and interferes with good radiative heat transfer.
I cut up a scrap stainless steel kitchen sink, built a sheet metal outer box, put in 1" of ceramic fiber board insulation, and added legs and pot supports. The inverted pyramid grate will have the legs shortened and be placed inside the "sink". A slide gate with sets of progressively smaller holes will be added to the "drain" for air control.
After over 30 years of doing theoretical and experimental research, the authors of this document (Newtech Co., Ltd. in Quy Nhon city, Binh Dinh and Tan My Kim Co., Ltd. in Ho Chi Minh city, Vietnam), until now, have completed all not only modern but also cheap & user-friendly technology solutions which can help the poor all over the world do cooking by gas generated at their home without buying any drops of liquefied gas.
These technologies solutions can be developed in a country or in a big city or small town in any countries in the world, even it is in America, Europe, Australia and especially in Asia and Africa.
The authors believe that the modern but simple technology solutions stated hereby will start an era of a great revolution in cooking for billions of the poor all over the world and they hope that such technology will satisfy all poor persons.
The authors are very willingly to transfer these technologies to the countries in accordance with the international law in order to be together with such countries to help the poor all over the world.
AIMS of the Eco-Kalan Project
To Improve the Health, Environment and Economics of Poor Communities
March 30, 2015
In the current video, I share with you the exciting developments from the partnership between the Eco-Kalan Project with the Negros Oriental Visayan Forum, the 79th Infantry Battalion and the 302nd Infantry Brigade of the Philippine Army in a livelihood program based on the Eco-Kalan and the Bingka Oven.
Since the Oct. 4, 2014 demonstration at Felipa Beach on Cooking with the Eco-Kalan and Baking with the Bingka Oven to members of SUMAPI Dumandan (http://youtu.be/RUYq7i1gQj4 ), we have learned and accomplished the following:
On December 14 -15, 2014, the Eco-Kalan Project and its partners
- set up an Eco-Kalan-C kitchen with Bingka ovens fired with wood and coconut shell charcoal and a traditional oven fired by wood for comparison; and
- officially launch the Eco-Kalan & Bingka Oven as a livelihood program for SUMAPI Dumandan under the Visayan Forum's umbrella.
In reviewing the interviews with SUMAPI members, guests and attendees at the launching, I learned about the limitations in the supply of coconut shell charcoal; restrictions in the production and supply of wood charcoal; and the seemingly unavoidable smoke when using wood as fuel for the Bingka oven. Smoke during baking can tarnish the appearance and taste of the baked product making it unmarketable.. And yet, wood is most often the fuel of choice when coconut shell or wood charcoal are not available or when wood is free for the picking.
I decided to make a clay stove which can function as a TLUD (gasifier) stove in phase 1 of the burn and as a charcoal stove in phase 2. That gave rise to the Whirly Pinay-S (2 kg wood capacity) and the Whirly Pinay-L (4 kg wood capacity) based on Kelpie Wilson's tin can Whirly Girl TLUD (Top Lit Upward Draft) stove. Our March 17, 2015 test runs with the large bingka oven using firewood in the improved Whirly Pinay (longer secondary air slits) produced clean, untarnished bingkas in all the 4 batches.
SNV Uganda, Last Mile Intelligence Report
Uganda’s energy consumption matrix stands at about 90% biomass, 7% petroleum products and 2% of electricity produced from hydro and thermal power plants. Only 12% of the total population is estimated to have access to electricity of which only 1% comprises the rural population. People in Uganda depend almost exclusively on dim kerosene-fired lamps for light. Around 95% of the country’s population have to use the expensive and dangerous fuel because they do not have access to the electricity grid ad other modern energy alternatives. To exacerbate the worrying situation, the use of biomass hugely depends on traditional technologies such as three-stone fireplaces that have very low efficiencies (10%-17%). Consequently, communities are facing growing scarcity of access to firewood and charcoal with demand ever increasing while supply remains unsustainable
Government, NGOs, private sector and development partners have been implementing
a number of improved cookstoves (ICS) interventions however, access to ICS remains very low especially in rural [last mile] communities. Most funding for ICS has been through projects and programmes that in the end fail to attain sustainability beyond the implementation period. Consequently, adopters are frustrated after project periods with no access to repair, new ICS and other related services.
SNV in the Energy Sector
SNV has been working in Uganda’s energy sector providing technical support to the Uganda Domestic Biogas Programme. In 2014, SNV expanded its portfolio in renewable energy sector by adding support to scaling up market-based approaches to distribution of improved cookstoves and Pico solar photovoltaic (PV) systems. SNV is working with stakeholders
to develop long-term sustainable market based solutions that will encourage investments from public and private sector stakeholders while scaling up access to ICS and pico solar PV among last mile consumers.
ETHOS Cooking Stoves Conference in Kirkland, Washington January, 2015.
for more about the next ETHOS Conference see http://www.ethoscon.com/
The ETHOS conference brings together people involved in stove design, dissemination, and testing from Universities, Government, and Non Government organizations, and has themes around the topics of improving cook stove design and performance, reducing emissions, and improving stove adoption, but listening to the needs of the people using the stoves. It ends with the 'lighting of the stoves' which is a demonstration of some of the cooking stoves that people have talked about in the conference.
In addition to capturing photos of the stoves, this year I captured a few pictures of the crowd of attendees comparing stove designs, toasting marshmallows, etc.
The lovely people taking pictures were from CREEC ( Energy and Energy Conservation ) which presented a great analysis of current cooking stove tests and some insights to improve them. They also noted that fans typically fail in Uganda, and there are no fans available to replace them.
For more about CREEC see http://creec.or.ug
StoveTec and Aprovecho presented some interesting innovations in stove design that they hope to field test in the coming year. The light green stove has an insulated top door for adding fuel to their TLUD style stove. The purple stove is their rocket stove that has been optimized for improved particulate emissions, with an improved set of colors.
For more about StoveTec stoves see http://stovetecstore.net/
for more about Aprovecho and stove testing see http://www.aprovecho.org/lab/index.php