Charcoal

Erin Rasmussen

the Partnership for Clean Indoor Air (PCIA) December, 2011

PCIA Bulletin Issue 29
http://www.pciaonline.org/bulletin/pcia-bulletin-issue-29

This Bulletin focuses fuels for clean burning stoves. As they note, a lot of effort has been focused on wood burning stoves, but in urban areas, stick wood is hard to come by, and charcoal is a much more popular fuel. There's a good reason for this, studies have shown that charcoal stoves have up to 90% less indoor air pollution than similar wood stoves. In urban areas, there is a noticeable improvement in indoor air quality simply by shifting to charcoal burning. Additionally, biomass fuel briquettes, pellets, and other densified paper burning stoves are showing a lot of promise in urban areas so this bulletin profiles projects that use urban waste to create fuel briquettes that can be sold to stove owners.

http://www.pciaonline.org/bulletin/pcia-bulletin-issue-29

teddy

The Cookswell Energy Saving Cookstove (Jiko) Company

Erin Rasmussen

Cecil Cook with Technoshare, November, 2011


Baseline Study of the Socio‐economic Patterns of Charcoal, Wood and Stove use in greater Lusaka, Zambia

Some highlights:

  • Previous stove improvement projects have failed to properly appreciate the central role played by one and two person tinsmith enterprises that produce and sell ordinary mbaulas at very low prices. The tinsmiths of Lusaka constitute a well distributed network of producers and sellers of ordinary mbaulas fabricated from scrap sheet metal who conveniently service all the major markets and townships of the city.
  • In addition to underestimating the multiple competitive advantages of a well distributed network of tinsmiths who fabricate and directly sell a charcoal stove that everybody knows how to operate, previous stove improvement projects failed to appreciate just how poor the bottom 2/3rds of the Lusaka economy really is and how little money low income families are able to save from their daily and weekly income for the purchase of a replacement mbaula when the old one finally breaks down. It is the initial retail price of an improved stove, not how much money it will save a household during the course of a month, that determines whether they are willing and able to spend two, three, four or more times the K4 000 to K6 000 for a 20cm ordinary mbaula. The ordinary mbaula is the industry standard. Every household without access to firewood, no matter how poor, has to pay out at least K4 000 once or twice a year to purchase a replacement mbaula.

Cecil did a good job of discovering the buying patterns in households of at least 3 different income levels, and uncovered that the ordinary (less effecient) Mduala stove has great traction among ordinary lower income members of Lusaka Zambia because the stoves work as expected, and they are inexpensively produced by local stove manufacturers.

He has also shared with us some of the highlights of the report in the attached pdfs.

solarbobky

On a recent trip to Haiti I was finally able to construct my CharBowl(tm) charcoal stove. It uses two nested stainless steel bowls (5 quart and 8 quart (4.7 liters and 7.6 liters))for durability and reflectivity with castable insulating refractory between them to reduce conductive heat losses. It has a 6.5" (16.5cm) dia cast iron grate for durability. It has a secondary air pipe to reduce CO emissions and increase heat output.

Erin Rasmussen

Paal Wendelobo, October, 2011

The Peko Pe TLUD project in Zambia is going well.

Paal describes it best:

" The main principals for our projects I will call it community based participation both for fuel and for stove productions. Utilization of local resources with other words.. The Peko Pe is designed for production by local tinsmith with the tools they might have. They only need a template and a model; they have the knowledge how to make it.

" First of all we discuss the need of changes, and then on the fuel side we start up with registration of alternative biomass for fuel for briquetting, energy forestry for fuel production. We always start with the fuel .to be sure there is sufficient quantities and to an affordable price.

"The charcoal business, which represents about 15 % of the adult population, has to be involved from an early stage of the project. All kind of activities on the household energy sector will in one or another way have an influence of their business, and with biochar we don’t know what will happen, but that is one of the ting we will try to find out. Any how for the charcoal business it is just to change from charcoal to alternative biomass for household energy.

"The energy loss by production of biochar for soil improvement is almost equivalent to the energy needed for the farmer to cook if you include the African way of thinking time is coming not like by us time is running That is a big difference. A household need about 2,7 kg charcoal a day for cooking. Form about 10 kg of dry wood you will get 2,7 kg of charcoal for one day cooking and no biochar. From .10 kg of dry wood you will get 10 kg of woodchips and that will be for 2 ½ day of cooking into a TLUD-ND. and about 2.7 kg of biochar. The pilot project will tell us if this is right or wrong."

" A common Miombo forest in Africa will give about 3 ton wood per ha a year. 3 ton of dry wood will give 800 kg of charcoal. A household of 5 consume 2-3 kg charcoal a day or about 800 kg a year. To produce 3 kg of charcoal you need 10-12 kg of dry fire wood in a common kiln. That will give one day cooking on a charcoal stove, and almost no biochar. 10-12kg dry chopped wood will give 3 days of cooking on a TLUD-ND or another FES and 2.5 kg of biochar
Energy forestry using just the sprouting every year can give up to 10 ton wood per ha a year, easy to cut to appropriate fuel for TLUD-ND’s or other types of FES. By adding some biochar to soil of bad quality 20-30 % increased yields can be obtained, which will give more food, more household energy, more jobs, better economy, better health for women and children and saving the forest. It can probably be as simple as this and is that not some of what we are looking for and need?
We know some changes have to take place on the household energy sector and we have to start somewhere. Why not start with small scale farmers on sandy soil, and from there develop the new household bio-energy strategy for developing countries. Probably also with the charcoal business, they have the whole infrastructure intact and can easy change from charcoal to alternative biomass like chopped wood or pellets from agriculture and forestry related waste. "

Erin Rasmussen

Daniel Wald July, 2011

Envirofit's G-3300 Wood Stove

G-3300 Stove with Flexible Pot SkirtG-3300 Stove with Flexible Pot Skirt

This is a pretty straight-forward, efficient wood cooking stove, with a rest in the front for loading stick wood. It's pretty nice looking, and they've worked with Oak Ridge Natl. Labs to create a durable combustion area.

It's got a couple of neat accessories. The one on the picture above is a flexible pot skirt. Pot skirts do a wonderful job of increasing heating efficiency, but they can be hard to implement because not all cooking pots are the same size. This solves that problem simply, and it looks nice which as we know from user feedback is critical to stove success.

They have a chimney attachment which adds another "burner" to the stove, and helps vent smoke more efficiently.

Spec sheets and manuals are on their web site:
http://www.envirofit.org/cookstoves/g-3300.html

Envirofit's CH-4400 Charcoal Stove

Envirofit Charcoal StoveEnvirofit Charcoal Stove with Cooking Pot

Apparently this is all the charcoal cooking stove. It is designed to be one of the cleanest burning stoves available. At first, I mistook the tall top part to be a cooking pot, but instead it is part of the stove. According to the instructions, the user needs a combination of charcoal and wood sticks or chips, that are loaded into the bottom of the stove, then the upper part with the pot skirt allows the stove to burn more efficiently. There are attachments for the other version of this charcoal stove that allow for grilling. This one seems more optimized for pots.

Additional information on the Charcoal stove:
http://www.envirofit.org/cookstoves/ch-4400.html

teddy

for all your cooking needs,
save energy, cook more food.

Take a look at the Cookswell Web site for more information:
http://www.reskqu.blogspot.com/

Teddy Kinyanjui, Musaki Enterprises, Nairobi, Kenya

saibhaskar
From
From
From
From

Avani charcoal stove http://avanicharcoalstove.blogspot.com/ is designed using the most common empty oil tin cans (15 liters) available in parts of India. Steel mesh, rods and a forged iron grate are also used. This stove can be made with less skills. The steel wire mesh used inside, protects the tin as well draws in air. Other liners like clay, and any other material can also be tried. Recently trained women and youth in its production at Avani - an organization at Berinag, Pittoragarh District, Uttarakhand (Himalayas), India. Here the pine needle charcoal briquettes are used. This stove has some common features of My Home Stove 2. http://myhomestove2.blogspot.com/ This is light weight, requires less skills to make it, convenient for adoption.

Erin Rasmussen

Tom Miles, ETHOS Conference 2011
Kirkland, Washington, USA January 28th ~ 30th, 2011

The ETHOS Stoves Conference was last weekend, and it included demonstrations by some of the stove makers and manufactures, with the opportunity to talk to the people using and inventing the stoves.

Here are some of the stand-outs from the demonstrations area, click on an image to view it in a larger size.

The Shark Stove presented by John and Flip Anderson. Notice the even cooking on the pancakes, that even heat is partially due the ceramic shark teeth construction just under the cooking surface. This is primarily a stick burning stove with both a plancha (even cooking surface) and pot rests.

Jatropha Seed TLUD (Top, lit, updraft design, using natural draft - no fan) by
Pamoja (http://www.pamoja.net/protree_jatropha.html) and Jet City Stoveworks ( http://jetcitystoveworks.com/ ). Abely demonstrated by David Otto.

Paul Anderson dexterously burning Jatropha seeds (out of doors) in the Woodgas Stove ( http://woodgas.com/bookSTOVE.htm ) designed by Tom Reed. This is a light weight gasifying stove (minus the pot rest in the picture) that uses a small electric fan.
Boiling water in the Charbelle, presented by Peter Scott. The Charbelle is a Charcoal cooking stove designed by the Burn Design Lab ( http://www.burndesignlab.org/our-stoves/ ) for use in Haiti.

This stove features an abrasion and thermal shock resistant ceramic liner surrounded by sheet metal cladding. The stove is currently being mass produced and sold in Kenya. The stove has been very well received, earning top marks from consumers.



Ryan with StoveTec was demonstrating the StoveTec Stove ( http://www.stovetec.net/us/ ) an Ashden Award winning cook stove that can either be used with stick wood or charcoal.

The institutional version of the StoveTec Stove for use in schools and other organizations, has an attached chimney and an a pressure cooker version. The pressure cooker is useful to shorten cooking times, and the fuel consumption, when cooking beans and small grains.

The Nomad PrePac ( http://www.preppac.net/ ) Bio-fuel Camp Stove burning stick wood. This is an ultra-light stove designed to burn small amounts of fuel for camping or for emergency preparedness.

the PEMS emissions testing was happening at ETHOS (of course), Larry Winiarski is in the background in these pictures.
saibhaskar

MAGH 3G GOOD STOVE

Most adopted stove by poor, tribals and farmers in parts of Andhra Pradesh, India, Already facilitated 1500 stoves and the demand is growing every day.
For more details see links:
http://www.bioenergylists.org/content/magh-3g-stove-all | http://e-magh3g.blogspot.com/

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