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Gasifier as a cleaner cooking system in rural Kenya
World Agroforestry Ctr ICRAF, POB 30677, Nairobi 00100, Kenya.;Univ Nairobi, Wangari Maathai Inst Peace & Environm Studies, POB 30197, Nairobi 00100, Kenya..
World Agroforestry Ctr ICRAF, POB 30677, Nairobi 00100, Kenya..
World Agroforestry Ctr ICRAF, POB 30677, Nairobi 00100, Kenya..
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
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2016 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 121, 208-217 p.Article in journal (Refereed) PublishedText
Abstract [en]

Global demand for wood fuel energy is high and rising due to population increases, particularly in sub-Saharan Africa, where firewood and charcoal are the main sources of cooking energy. Inefficient cooking techniques consume large amounts of fuel and create indoor pollution, with negative health impacts particularly among women and small children. Efficient cooking stoves can potentially save fuel and reduce the health risks of smoke in the kitchen. This study compared the ease of use, energy consumption, fuel use efficiency and gas and particle emissions of a small-scale gasifier cooking stove with that of a traditional three-stone stove and an improved Hifadhi stove in a smallholder farming setting in Kenya. This was done by participatory evaluation of these cooking techniques by women on smallholder farms, assessing fuel consumption, time used in cooking and indoor air concentrations of carbon monoxide and fine particulate matter. It was found that compared with traditional and improved cooking stoves, the gasifier domestic cooking system saved 27-40% of fuel, reduced cooking time by 19-23% and reduced emissions by 40-90%. Thus the gasifier system has potential to alleviate energy and time poverty among small-scale farmers, while improving kitchen air quality. These new findings can assist in development of cleaner biomass cooking technologies in developing countries. Women who cooked using the gasifier preferred it to current cooking practices due to perceived benefits. Thus the gasifier is appropriate for rural areas; it constitutes a cleaner cooking system that saves fuel, produces charcoal for another round of cooking, cooks rapidly, and reduces indoor air pollution from cooking with biomass fuel. However, there is a need to improve the design to make it more stable and safer.

Place, publisher, year, edition, pages
2016. Vol. 121, 208-217 p.
Keyword [en]
Gasifier cooking stove, Cooking fuel, Emissions
National Category
Public Health, Global Health, Social Medicine and Epidemiology Environmental Engineering
Identifiers
URN: urn:nbn:se:uu:diva-294643DOI: 10.1016/j.jclepro.2016.01.039ISI: 000373539000020OAI: oai:DiVA.org:uu-294643DiVA: diva2:944338
Funder
Swedish Research CouncilSida - Swedish International Development Cooperation Agency, 348-2913-182
Available from: 2016-06-29 Created: 2016-05-26 Last updated: 2016-06-29Bibliographically approved

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Journal of Cleaner Production
Public Health, Global Health, Social Medicine and EpidemiologyEnvironmental Engineering

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