Marshall Islands Energy Fair--- Stoves March 2009 Michael Trevor, Marshall Islands,March 8, 2009

Firing Things UpFiring Things Up

See slide show attached. I did this in conjunction with a Woman's Club, "Kare in Okrane." Essentially, "Women of the Break of Dawn," a reference to women getting up a the break of day to prepare for the family's day. We did have hundreds of observers and a strongly expressed interest. In this case the rocket stove had the clear edge. Burning fuel is what people understand. Women have been doing it at their grandmother's knee since childhood. The Solar oven probably came in second. Here it was much like a microwave. I had to constantly open it up and invite people to touch the pot. Ouch, that it hot, hey it does work. What can you cook in it? Sadly the TLUD was more of curiosity. . The kerosene/propane like flame did surprise people, and I repeatly brought up charcoal and terrapreta as a benefit over time. However, the small size and short burn worked against it. I simply switch between two to resolve this. Best Regards to all Michael Trevor

Paal Wendelbo and His “Peko Pe” Top-Lit UpDraft (TLUD) Gasifier Cookstoves
Paul Anderson, January 19, 2009

Paal WendlboPaal Wendlbo

This report is in three parts: pioneer experiences; selection of photographs; and technical specifications of the PP stove. The report is based on e-mail interviews and materials provided by Paal Wendelbo in July 2008 and December to Paul S. Anderson, who has added interpretive content. Mr. Wendelbo has approved the basic content about himself, but Dr. Anderson is responsible for any errors, omissions, and editing.


Palm Fronds as Fuel in a TLUD (Top Lit Updraft)
Micheal Trevor, Marshall Islands, December 7, 2008

Loaded Chopped FrondsLoaded Chopped Fronds

Remember in the rocket stove I am use very "pulpy" stuff.
In the TLUDS-- XL Woodgas and my tincanium ones--- they make charcoal. As for shell I have not tried it much yet in the TLUDS althought my son burned out the first XLWoodgas unit on it.

I think a mix of broken shell chips with the chopped frond piece may work very well.
The chopped frond pieces work well but the burn is rather short.

In industrial applications like a bakery I am sure shell would be fantastic if you could get enough.I think everyone else would get it first

Michael Trevor
Marshall Islands

Chopped Fronds for FuelsChopped Fronds for Fuels
Light OffLight Off
Nice BurnNice Burn

Peko Pe 3 Liter Test Stove and Fuels
Paal Wendelbo, August 20, 2008
Boiling TestBoiling Test
The Multifuel Combustion System (MFCS) is a flexible system designed for bioenergy household and institutional cooking. It is based on one energy unit (the Peko Pe) which single or multiple will cower all needs of energy for inside and outside cooking. The energy unit has to be seen as a “battery” loaded with energy, and when empty, replaced with a new loaded until the food is ready. Two units of 3 litres will cover the needs of a family, ½ full with fuel for coffee or tea, a bit more for porridge and 1 ½ for the whole meal. For boiling beans, empty the unit and place the pot on the glowing char. A simple handle to hold the pot for mingling the enchima will be a good help. (See the drawing). For institutional cooking more 10litre units will be the best 3 Units will boil 60 litres within 50 minutes and continue boiling 2 more hours on 6kg of chopped wood-sticks. The system can be used for heating air or water, frying, cooking and baking bread, even smoking fish.

The MFCS will be faced the same problems as other type of new stoves and has to be trained, it is boiling faster and saving fuel (saving 2/3), burning with no smoke and little soot (depending a bit on type of fuel)
The system has been working for about 15 years and plans or more information is available by

Attached you will find some pictures of a simple 3litre teststove I use to test types of biofuel.
1. chopped woodstick from energy forestry.
2. chipped wood from sawmillslabs.
3.wood pellets.

3 Types of Fuels3 Types of Fuels

All types brought 3 litre of water from 17C to 100C within 13-15 minutes. No smoke no soot. Between 600C and 700C flame temperature.
Flame 1Flame 1
Flame 2Flame 2

TLUD Workshop being offered prior to ETHOS Conference
Hosted by Hydrovolts
Biomass Energy Foundation is offering a Workshop on the technical and practical concepts of its micro-gasification units. Dr. Paul Anderson aka “Dr TLUD” will provide an overview of the science and technology of the Top Lit Up Draft (TLUD) stove and its applications in meeting the cooking needs of local communities around the globe.
He will be assisted by Bob Fairchild, Christa Roth, and Kathy Nafie.


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