Wood gas

Wood gas, also known as producer gas or syngas, is the product of thermal gasification of biomass or other carbon containing materials such as coal in a gasifier. It is the result of a high temperature reaction (>700C), where carbon reacts with steam or a limited amount of air or oxygen producing carbon monoxide (CO), molecular hydrogen (H2), and carbon dioxide (CO2) In several gasifiers the actual gasification process is preceded by pyrolysis, where the biomass or coal turns into char releasing PAH rich tar and methane (CH4). Other gasifiers are fed with previously pyrolysed char.

External links

• Biomass Energy Foundation (American) extensive site on wood gas and gasifiers, http://www.woodgas.com/ .
• Food and Agriculture Organization of the United Nations: Wood Gas as Engine Fuel, 1986, http://www.fao.org/DOCREP/T0512E/T0512e00.htm. Detailed explanation of the theory and praxis of wood gasifiers, including dangers and downsides.
• Hans Hochwald: Wood gas producers, http://highforest.tripod.com/woodgas/woodgas.html. A schematic of a wood gasifier, and links.
• Report about an '85 Yugo car converted to wood gas by Igor and Anton Peterka: http://www.hszk.bme.hu/~oj002/yugo/wood-gas.htm
• Description of several wood gas stoves: http://journeytoforever.org/at_woodfire.html
• GasNet, European Union biomass gasification research coordination, http://www.gasnet.uk.net/
• Tar measurements on gasifiers, European standardisation effort, http://www.tarweb.net/
• Description of Fire Piston,

http://www.geocities.com/firepiston/

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• Information to build/use your own wood gasifier for the auto,

http://www.gengas.nu/byggbes/index.shtml

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