TLUD

TChar Technology for Cookstoves: Part B: Construction released

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TChar Technology for Cookstoves: Part B: Construction has been released. It is available for download at:
http://drtlud.com/
The TChar is a TLUD which lifts off at the end of the gasifier phase to drop char into either a charcoal stove bottom for continued use as cooking charcoal or a quench base for later use as charcoal or biochar.

TChar stove

stove-image: 

The TChar(tm) stove is a TLUD stove that lifts off at the end of the gasification stage to drop the charcoal into a T-base(tm): a charcoal stove to continue cooking with the charcoal created or a quench base to save the charcoal for biochar or other use.
Download Part A of TChar Technology for Cookstoves at:
http://drtlud.com/

Zambia Peko Pe Project

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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. "

Biochar TLUD Stove now selling in Australia

Biochar Industries part of Biochar Project in Kunghur Australia is now selling Biochar TLUD cook stoves as part of our plan to make more people aware of the benefits of biochar.

T l u d

is an acronym for Top Lit Up Draught meaning you lite it at the top and the air is sucked up through the fire. Fantastic device that is light to carry and will work with all woods great survival tool . The best feature of this Tlud is when the flames go out you then have biochar. All you have to do is drop the embers on the ground and spray some water on them so they don’t continue to burn.

This particular model was imported from India and has a very nice finish and somehow I ended up with some to sell so I wanted to let my readers know first before I start selling them at stores and markets.

General Purpose iCan updated

Jock Gill, May, 2011

Jock has updated his iCan instructions on Flickr:
http://www.flickr.com/photos/jockgill/sets/72157626640937954/

from Jock's email:

The triplets of triplets in the secondary air supply is a significant improvement.

The 18-12-6 iCan now has much greater total time with a very well behaved flame and an air fuel mixture that is lean to good for most of the run.
There are still several minutes of a too rich mixture that does emit some soot.

Run time on 350 grams was 27:45, most of the smoke was gone within 2 minutes, just two floaters, and the biochar had a good clean nose. This is about as good as I have gotten so far.

Making Pita Bread with Anderson TLUD Woodgas Stove

Ray Menke

My wife and I made a short video showing how we make Pita Bread using a version of this stove design. Here is the link:

http://www.youtube.com/watch?v=JOuoE2KAbQI

The little teaching iCan that could

Jock Gill, April 2011
Peacham, Vermont, usa


My little iCan made from a 3 lbs Costco coffee can boiled 1.75 liters of water in 42 minutes this afternoon. Ambient temp was 47 [8.33C]. This was done in 5 batches averaging 350 ml each. A very clean burn. Some soot at the start of each batch when the water was cold. Just a soon as the water in the cup warmed up a bit, the soot stopped.

Of course I also made some biochar as well.

Fuel was a good quality wood pellet. Cost of fuel: about 17 cents assuming pellets at $230 per ton. They can be bought for a good deal less, but I am using a higher number to be safe.

Cost per liter boiled: ~ 7.4 cents, allowing 4 cents as the value of the biochar captured at the rate of 17.5% of the dry weight of the fuel.

Ecoplancha from Stove Team International

Gustavo Pena, Stove Team International
and Larry Winiarski

This is a Hybrid Combustion Rocket, TLUD stove designed for practical use with the help of Larry Winiarski, and with Gustavo Peña of Stove Team International.

See also:

ETHOS 2011

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.
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