Micro-gasification: Cooking with gas from biomass - Amper

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Micro-gasification: Cooking with gas from dry biomass 2.4 Other inspiring micro-gasifier concepts Many gasifier concepts have been developed in the past to various levels of sophistication. Some never went into sizeable production, but might still be valuable for specific applications where they can be developed further. Some examples: Designs developed by AD. Karve from the Appropriate Rural Technology Institute ARTI in Pune, India: The ‗Vivek‘ stove for sawdust and the ‗Agni‘ stove for briquettes and wood chips, More info on: http://www.arti-india.org/index.php?option=com_content&view=article&id=76:improvedcook-stoves-for-the-rural-housewife&catid=15:rural-energy-technologies&Itemid=52 Other special design for briquettes: Richard Stanley and Kobus Venter: Holey Briquette Gasifier Stoves (2003) http://www.bioenergylists.org/stovesdoc/Stanley/BriqGassstove.htm http://vuthisa.com/ Holey Briquette Gasifier Stove, rated at 1,1 KW power output with 35% efficiency Source: Bhattarcharya and Leon, 2005: Prospects for Biomass Gasifiers for Cooking Applications in Asia, page 5, http://www.retsasia.ait.ac.th/Publications/WRERC%202005/AIT-gasifierstove%20for%20cookingfinal.pdf Gasifier conceptualised in 2004 in India by Krishna Kumar http://www.bioenergylists.org/stovesdoc/kumar/KK NDG.pdf Woodgas stove made out of ceramic by Saibaskar Reddy: Interesting alternative for gentle ‗one-armed-cooking‘ with only light stirring: http://e-woodgasstove.blogspot.com/. Unknown practicality for ‗two-armed-cooking‘ involving heavy stirring for which a certain physical strength of the structure is needed. In this case retrofitting a simple gasifier burner unit in a sturdy (clay) stove might be an easier option. Example of a cross-draft gasifier mentioned in a report from GERES in Cambodia: In the efforts from RETSASIA, some cross-draft gasifier models were developed, the one mention in the report on page 12 is was adapted by Planète Bois to be used for extended cooking times e.g. in cottage industry production (tested in Cambodia for sugar-extraction from palm juice) or where space heating is needed (field trials in Morocco). The gasgenerator and the gas-combustor are both vertical chambers, connected in the lower part by a horizontal channel to take the pyrolysis gases across into the combustion chamber. Power is regulated by the primary air supply. For easy comparison a graph of a TLUD is depicted next to it. HERA – GIZ Manual Micro-gasification Version 1.01 January 2011 65
Micro-gasification: Cooking with gas from dry biomass A cross-draft stove in Morocco Source: http://www.geres.eu/fr/etudes/122-publi-etude-nls, page 12 Videos and other instructions: There is a multitude of contributions found on the internet these days. Some selected highlights: Lanny Hanson: a very productive designer of useful prototypes who shares his inventions on http://www.youtube.com/user/lannyplans Robert Flanagan (China) Robert Flanagan has some designs that are being tested especially with bamboo as a fuel in China. Videos on http://www.youtube.com/watch?v=Y5OAkmum7gU&feature=related http://www.youtube.com/watch?v=Wubjh8_b4Xg&feature=related Or documents on: http://terrapreta.bioenergylists.org/terrabiocharstove http://www.carbon-negative.us/burners/docs/RFlanaganCookstove.pdf http://www.unccd.int/publicinfo/poznanclimatetalks/docs/Natural%20Draft%20Stove.pdf HERA – GIZ Manual Micro-gasification Version 1.01 January 2011 66
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Micro-gasification: Cooking with gas from biomass - Amper

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