Metal

Swosthee Stove

3 August 2006 - 9:02pm

Koopmans

Baldwin

Pictures and Drawings of the Swosthee Stove, from Auke Koopmans (Aug 21/98)

SWOSTHEE

Single Pan Wood Stove Of High efficiency A Fuel Efficient
Portable Cookstove,
Svathi Bhogle

Berkeley Tara - Darfur Improved Stove

23 July 2006 - 8:56am

Amrose

Gadgil

Berkeley Tara - Darfur Improved Stove (pdf)
Ashok Gadgil and Susan Amrose, Lawrence Berkeley National Laboratory (LBNL), July 15, 2006

I returned two days ago from Darfur. Susan Amrose is still in Khartoum, will return tomorrow. We visited El Fashir (and Abu Shouk camp), Nyala (and Otash camp), and of course Khartoum. Our hosts for this trip was the UN Population Fund (UNFPA) and CHF International.

Darfur FES

I would like to send you all the powerpoint presentation that Susan and I gave at the meetings of NGOs and funders in Khartoum, Nyala and El Fashir, organized by UNFPA. We think the presentations were very well received.

kind regards,

-- Ashok

Improved Mali Stove

22 July 2006 - 2:45pm

Pemberton-Pigott

Improved Mali Stove
Crispin Pemberton-Pigott, New Dawn Engineering, July 21, 2006

Dear Friends

I have heard confirmation from FASEN in Dakar (Senegal) that the women cooking at the ProBEC head office are using 50% less charcoal with their 'improved Malgach' stove (pronounced mal-gash).

We know this as the garden variety Mali stove - a very simple metal, inverted, truncated pyramid sitting on a square stand with one side missing attached to a flat, square base. There are millions of them all over Africa.

We added a door to close the open side in the stand, and another truncated, inverted pyramid to the top, creating a counter-flow air preheater. The air now only enters from below when it is being lit. There are two bricks in the base to contain heat from the grate and pass it to the incoming air.

The charcoal is loaded in the usual way and lit. A metal rod bent into a triangle is dropped in and a square sheet with a pot skirt is then dropped on top of everything, closing in the fire. The rod keeps the pot off the charcoal - preferably a 50mm gap.

The fact that the women are putting in 1/2 the charcoal normally used is not the end of the story. The stove is designed for 2 kg of charcoal so putting in 1 kg is leaves empty space. In reality the stove could be reduced in size by 30% in length, breadth and height reducing the material cost to approximately that of the original, larger, more wasteful stove. The gap between the two 'pyramids' is 13 to 16mm.

160 grams of charcoal boils and simmers 5 liters/CF04 Stove

2 July 2006 - 1:13pm

Henson

160 grams of charcoal boils and simmers 5 liters/CF04 Stove
Lanny Henson www.lanny.us July 2, 2006

The CF04 Stove boiled and simmered 5 liters using only 160gr of charcoal and wood.

After several modifications to 4 different prototypes, it only took 150 gr of lump charcoal with 11% moisture and 10gr of wood to boil 5 liters of 83 degF/28.3 degC water in 45 min. That is 32 grams per liter to boil and simmer. At 1 hour after boiling the water was still simmering at 100 degC and after 2 hours the water was 205degF/96 degC. At this point I shut the air control and capped the pot module to stop the airflow and retain heat.

At 3 hours the water temp was 190 degF/87.8 degC and was 178 degF/ 81 degC at 4 hours.

Big Improvements For Small Cooking Stoves: The Benefits of Heat Recycling

23 June 2006 - 5:30am

Pemberton-Pigott

Big Improvements For Small Cooking Stoves: The Benefits of Heat Recycling
Crispin Pemberton-Pigott, New Dawn Engineering, January 2004

ETHOS CONFERENCE 31 Jan to 1 Feb 2004

These days so much is known about combustion that efficient and nearly complete
combustion can be basically taken for granted, even if the knowledge has not been put into
practice. Combustion geeks now focus to making incremental improvements in the removal
of unwanted combustion products, largely PICs and CO.

File attachments:

pembertonpigottbigimprovements.pdf

Building a VITA Stove

13 June 2006 - 3:43pm

Roth, Jeremy

Instructional Video "Building a VITA Stove"
Jeremy Roth, Aprovecho Research Center, June 13th 2006

File attachments:

How to Build a Vita Stove

Vita

Rocket

Metal

The Garlington Wood Gas Stove

13 June 2006 - 9:14am

The Garlington Wood Gas Stove
Ray Garlington 2003

[img_assist|fid=478|thumb=1|alt=The Garlington Wood Gas Stove]

Center Fire Stove 01 Cooking Test

12 June 2006 - 6:16pm

Henson

Center Fire Stove 01 Cooking Test
Lanny Henson, June 12, 2006

In the last cooking test, the Center Fire Stove 01 needed only 750
grams/1.65 lb of pine chips to cook 8 pounds/3.63 kilograms dry weight of pintos. That is 14 liters of volume with water or 104 servings-35 gr/ 1/2 cup cooked volume (1/4 cup dry weight) servings.

The Pema Pot Skirt

10 June 2006 - 7:39am

Rangdrol

Pema Pot Skit
Jigme Rangdrol June 10, 2006

Pema Pot Skirt

There seems to be actual agreement that pot skirts make combustion stoves better.
It is clear however that the bulk of deployed stoves do not have pot skirts.
Therefore an inexpensive pot skirt that could be made in the third and fourth world for those deployed stoves would have some usefulness.

Skirt

Metal

The Sprocket Rocket in Uganda

5 June 2006 - 8:54pm

Goyer

The Sprocket Rocket (pdf) (Uganda)
Ken Goyer June 4, 2006

Ken Goyer describes the "sprocket rocket" charcoal stove and its use in Uganda.

This is a bicycle sprocket. I was visiting a camp near Lira and this woman came along holding this sprocket. She said that she was planning to make a Sprocket Rocket and that she had paid 1000 shillings (about 54 cents) for it.

File attachments: