Aprovecho / ProBEC Ashden Awards Video available On-Line
Jeremy Roth, Aprovecho

CO/CO2 Ratio in the Charcoal Stoves Tested at Aprovecho (pdf)
Dean Still, Aprovecho Research Center, June 23, 2006

The following graph plots the levels of CO and CO2 during one test each of the charcoal burning rocket stove and Jiko-type charcoal stove from Ghana. A higher level of CO2 suggests a higher burn rate of fuel.

It can be seen that even though the CO level for the rocket drops below 10 ppm, the CO2 level remains high suggesting a high firepower continues. The Ghana charcoal stove has a lower level of CO2 with a considerably higher level of CO.

Comparing the Charcoal Burning Rocket and Jiko Stoves (pdf)
Dean Still and Nordica MacCarty, Aprovecho Research Center, June 22nd, 2006

The charcoal Rocket Stove was compared to the Jiko-type charcoal stove sent from Ghana. 600 grams of Kingsford charcoal was placed in the stoves under the Aprovecho emissions hood. One test was performed on each stove for preliminary studies. The stoves are compared in the following graph for carbon monoxide emissions during a cooking task (to boil 5L of water and simmer 30 minutes).

Reducing Indoor Air Pollution through Improved Cookstoves Dissemination: The Case of Patsari Stoves in Rural Mexico
in PCIA Bulletin Issue 7, June 2006

Ollas Solares
Iniciativa Mexicana de Aprendizaje para la Conservación

COCINAS ECOLÓGICAS:UN ELEMENTO ESENCIAL PARA UNA MEJOR SALUD EN EL HOGAR
David Whitfield Vaughn y Ruth Saavedra de Whitfield

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.

Crispin Pemberton-Pigott, New Dawn Engineering, Swaziland, June 12, 2006

3 Laterit and Charcoal Dust

Dear Friends

I fired two of the rings today for a brief time, perhaps 3 hours at temperature. No particular care was taken regarding the slow initial temperature rise.

Heat Losses in a Cook Pot at Constant Temperature (pdf)
Alan Berick, Aprovecho June 10, 2006

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.

For the 2006 Ashden Award finalists announced 30 May 2006 see: http://www.ashdenawards.org/press_release_05_2006
Spanish: http://www.ashdenawards.org/informe_de_prensa06 in Spanish

For the 2006 Ashden Award finalists announced 30 May 2006 see: http://www.ashdenawards.org/press_release_05_2006
Spanish: http://www.ashdenawards.org/informe_de_prensa06 in Spanish