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Tropentag, September 14 - 16, 2022, Prague

"Can agroecological farming feed the world? Farmers' and academia's views."

Paving the path to clean cooking – a case study in Togo

Özge Mutlu, Dennis Krüger

The German Biomass Research Center, Thermochemical Conversion, Germany


Household pollution resulting from inefficient burning over open fires or in simple stoves is a critical problem that concerns almost one third of the world population. Within the framework of project LabTogo funded by BMBF, one of the aims is to develop a low-cost and fuel-flexible biomass burner. Thus, the village Dévémé is selected as study field. To understand the daily dynamics of the selected region, a field survey was carried out with 40 household. Based on the feedbacks from the locals, so-called 'Apeli stove' was developed.
The “Apeli stove” is designed to fuel with appropriate locally available fuels (i.e. wood pellets, bamboo pellets, palm kernel shells) with high efficiency and low emission operation due to the fuel pre-gasification process. The need of fast start-up/shut-down time as well as the possibility of a locally and affordable mass production played an important role on the final product design. The burner consists of two main parts; a gas tight outlet part made of ceramic and an inlet part which serves as reaction chamber for which mainly an empty can is used. The fan is driven directly by a power bank and the thermal power output is regulated by the fuel feeding rate.
Within this study, the Apeli stove was tested based on ISO 19867-1 standard 'Clean cookstoves and clean cooking solutions Harmonized laboratory test protocols Part 1: Standard test sequence for emissions and performance, safety and durability' under laboratory conditions using wood pellets as reference fuel. The standard allows classification of cookstoves based on their technical specifications including efficiency, emissions, particulate matter. The experiments showed that 'Apeli stove' can reach up to 45 % efficiency which is significantly higher than the most other biomass stoves.
We would like to highlight our most important findings from LabTogo project and discuss on importance of paving the path to access to clean cooking. With improving access to clean cooking, it is possible to contribute to SDGs, in particular to SDG 7 (Affordable and Clean Energy) and indirectly to SDGs 3 (Good Health and Well-being), 5 (Gender Equality), 13 (Climate Action) and 15 (Life on Land).

Keywords: Biomass, clean cooking, cookstove, emissions

Contact Address: Özge Mutlu, The German Biomass Research Center, Thermochemical Conversion, Torgauerstraße 116, 04347  Leipzig, Germany, e-mail: oezge.mutlu@dbfz.de

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