Doug said, >From a technical point of view, there are probably no reasons why we >couldn't design an engine for tar gas, but surely it would be more practical >to design a gas making system without tar. and I would add, develop an EC (Stirling) engine! Ian Bywater The Gasification List is sponsored by USDOE BioPower Program http://www.eren.doe.gov/biopower/ and PRM Energy Systems http://www.prmenergy.com Other Sponsors, Archives and Information http://www.crest.org/renewables/gasification-list-archive http://solstice.crest.org/renewables/biomass-info/gasref.shtml http://www.crest.org/renewables/biomass-info/ http://www.crest.org/renewables/biomass-info/carbon.shtml