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| Author and Title |
Ballard-Tremeer G & Jawurek H H (1996) Comparison of Five Rural, Wood-Burning Cooking Devices: Efficiencies and Emissions |
| Article in |
Biomass and Bioenergy, Vol 11, No 5, pp. 419-430, Elsevier Science Ltd, Great Britain |
| Available online at |
http://ecoharmony.com/thesis/AppdxE.htm |
| End use |
Household energy |
| Energy technology |
Improved stoves |
| Issue |
Emissions and efficiency |
| Level |
Research |
| Description |
The following cooking devices were compared: An open fire built on the ground, an ‘improved’ open fire built on a raised grate, a one-pot metal stove, a two-pot ceramic stove and a two- pot metal stove. Efficiencies (ratios of energy entering the pot to the energy content of the fuel consumed) were determined by carrying out a computer-controlled version of the standard Water Boiling Test. Emission concentrations of smoke, carbon monoxide, and sulphur dioxide were measured by means of a fume extraction hood, an optical smoke density meter and an electrochemical flue gas analyser. Average emissions of smoke were lowest for the improved open fire and the two-pot ceramic stove, with the remaining devices higher-emitting by factors of 1.5 to 3. Emissions of carbon monoxide and sulphur dioxide were lowest for the two open fires; the stoves were higher-emitting by factors ranging from 2 to 3 for carbon monoxide and 3 to 10 for sulphur dioxide. Average efficiencies were 14% for the open fire, 21% for the improved open fire, and (with no statistically significant difference) 20 to 24% for the stoves. |
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