Crispin Pemberton-Pigott & Christa Roth, December, 2009

Chinese Draft Enhancer

Dear Friends

Working on advice brought by Cecil Cook from Lusaka, Peter Coughlin in
Maputo has tried using a short vertical tube (about 400mm) held over the
lighting charcoal to accelerate ignition. This tool is widely used in
Lusaka. It is typically 50mm in diameter and can be made from an piece of
scrap pipe or rolled metal sheet.

Peter reports that people using it have reported faster lighting and a
reduction in emissions during ignition (which is the smoky part of a
charcoal fire).

I tried a similar though larger tube over coal in a bucket and achieved a
dramatic reduction in particulate emissions - certainly more than 90%.


This principle is not only limited to Zambia, it is pretty widely applied by other charcoal users in the region.
Though the most perfect 'chimney' I have got is from China: It came as a standard accessory packed in the carton of the Chinese coal-briquette stove marketed in South Africa under the name of 'Lotti stove'. I think the stove is manfuactured by Shengzhou. So it could be standard chinese practice. The conical shape with the two little air-holes on both sides shortly below the top works much better than a straight tube. We used one at stove camp this year on a two-can TLUD instead of the upper straight can and draft increased considerably. Foto attached, but not sure if it makes it on the list. regards, christa

Dear Tom,

we had developed, during the 1990s, a series of mud stoves, which not only possessed a higher fuel use efficiency but which also reduced the harmful emissions when compared with the emissions from traditional stoves used by the local people. They are made and sold even today by rural artisans trained by us. The cost is in the range of US$2 to 5. In 2003, the Shell Foundation came forward to support our stoves programme, but we had to stop promoting our own mud stoves, and we were allowed to propagate only models approved by Shell Foundation. The approved models had much lower emissions but they carried a price tag in the range of US$15 to 25.

One of the conditions laid down in this project was that the stoves must be propagated through commercial channels, without subsidy of any kind. We failed to achieve the targets set under the project, and because of this reason, Shell Foundation withdrew their support. We still sell the stoves approved by Shell Foundation but our clients are not the rural poor.

We have not given up our efforts to improve the performance of the simple mud stoves. The latest attempt is a model in which the body of the stove is made of a porous material, which has a high insulative capacity. The emissions are much nearer to internationally accepted standards. This stove costs about US$10, and if mass produced, it can be supplied at a price of about US$6 to 7

A couple of the presentations from the ASEAN-US NEXT-GENERATION COOK STOVE WORKSHOP, November 19, 2009.

One is a great study by Dr. Modi of Columbia University of several stoves in Tanzania, and the other is some useful info from Tami Bond. Kirk also gave a very useful presentation, but unfortunately it was not included in the proceedings.

Mabaga Charcoal and Maliyab Fuelwood Stoves
Approtech Asia, Philippines

Approtech offers the Philippine versions of the Cambodia New Lao Bucket (Mabaga Kalan) cahrcaol stove and the Sri Lankan Anagi (Maliyab) fuelwood Stoves. The new Lao Bucket was developed by GERES-Cambodia and is approved for carbon credit projects. See brochure attached.


Geres video -

and Approtech

on you tube:

Mahesh Yagnaraman
Ooorja First Energy

“Oorja” today represents a new way of cooking and has the potential to grow into a large,
successful business in India and globally. The initiative aims at creating a commercially
sustainable business, offering clean, safe and affordable energy solutions to identified
customers in both urban and rural households in developing countries."

More detail on the Oorja stove in The Hindu: A stove and a smokeless kitchen

Magh CM Woodgas Good Stove designed recently is a very low cost TLUD stove meant for Common Man (CM). This can be produced by the local communities with less than 8 dollars (USD). Under Magh CM series I have designed many stoves / burners in the past. This stove design is one of the most acceptable stoves, as it has the options to run on forced air / natural draft. Most importantly the convenient charcoal / ash removal facility is created at the bottom, the grate can be simply lifted using a wire and immediately refilled for reuse. The additional window for secondary air in case of no power, the primary air control and the 12 V DC powered fan makes it like a geared vehicle for multiple options to control the heat / flame / updraft. Used the most commonly available oil tin can of 12 inches x 9 inches x 9 inches with a combustion chamber of 6 inches diameter and 9 inches height for the convenience of adoption for a family of 5 members cooking needs. The tin cans are easily available all over India. Posting here the pictures and the design for your valuable comments for improvement. I am thankful to all for your valuable suggestions in the past. This is the 30th Good Stove design of Avan and Magh series since last 4 years of my research and design. Happy to share that the people who have seen this stove have paid money in advance for having these Stoves. For more pictures and info see and

The biomass feed is: Wood shavings, chips of wood, leaves, corn cobs, pieces of sticks, seeds, cowdung cakes etc.
Weight: ~15 kgs
Dimensions: 12x9x9 inches
Price: less than 8 dollars (community price)
GEO is implementing Good Stoves and Biochar Communities (GSBC) Project in Andhra Pradesh State, India with the support of GoodPlanet, France, this is a 3 years project. 


An Update from BSH on Protos. The Plant Oil Stove.
Samuel N. Shiroff, Director, BSH

For a brief update BSH is preparing a mass production capacity that should come on-line in late autumn of this year. Initial production will be ramped up through Q4 so we can expect to produce several thousand units in 2009. We are working with a local Indonesian partner - in an OEM process with 100% local content. This is part of our goal, but since BSH is not present in any meaningful way in our conventional business in that country, it is a very new activity for us. Thus, the time line may be subject to delay if quality or other issues arise. I would rather delay a few weeks than deliver a defective product.

The initial cost is going to be around US$40 - 42 Ex-works. This means it does not include transport or tolls if moving outside of Indonesia. Our total capacity for 2010 should be around 50,000 units - so this price will hopefully edge down. Naturally currency fluctuations will also play a role. BSH is running the project as a "social business". This means our goal is simply to cover costs and any additional profit will be put back into the project - for instance subsidizing costs in countries where there is viability, but not enough purchasing power for the capital costs. The mentioned price is the cost of production and local overhead. No more. Larger orders do not generate greater discounts. At first all orders will be filled out of Indonesia. New production capacity requires a minimum annual demand of 25,000 units and a viable infrastructure in the desired region. With perhaps the exception of the tank and some cleaning tools, it is simply not possible to establish small-scale local production that ensures consistent quality in an economically viable manner.

GEO fuel briquettes

is a very low cost technology, and also for making briquettes with very less effort. This is screw based system, requires very less energy and space to operate. Briquettes can be made using human power, convenient for young or old in making briquettes from various types of waste material. Small pieces of waste papers, sawdust, leaves, wood shavings, rice husk, etc. can be used as raw material. Any sticky material available in abundant can also be added if required for producing compact and strong briquettes. The cost of each such device made up of iron is less than $8 (USD) or Rs. 400. Various types of stoves are available for using the briquettes, including some of these AVAN and MAGH series stoves can be used. Magh-1 stove with little adoption can also be used for briquettes as fuel. We can also make and use special stoves for the briquettes as fuel. For more details see:

Also see | |

Stove and 1 HP Pelletizer
Brendon Mendonca, Watershed Organisation Trust April 25, 2009

WOTR StoveWOTR Stove
Pictures of the stove (4000 sold) and 1 HP pelletizer.

Following is the link to our website

WOTR 1 HP Pellet MillWOTR 1 HP Pellet Mill


Project Surya: Reduction of Air Pollution and Global warming by Cooking with Renewable SourcesV. Ramanathan and K.


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