Whoops, forgot to include a couple of URLS showing commercial boilers which use this design (although they just burn the gas in a secondary chamber). http://www.kuenzel.de/English/products/indexEP.htm http://www.woodboilers.com/wood.html -- Harmon Seaver, MLIS CyberShamanix Work 920-203-9633 Home 920-233-5820 hseaver@cybershamanix.com http://www.cybershamanix.com/resume.html - Gasification List Archives: http://www.crest.org/discussion/gasification/current/ Gasification List Moderator: Tom Reed, Biomass Energy Foundation, Reedtb2@cs.com www.webpan.com/BEF List-Post: <mailto:gasification@crest.org> List-Help: <mailto:gasification-help@crest.org> List-Unsubscribe: <mailto:gasification-unsubscribe@crest.org> List-Subscribe: <mailto:gasification-subscribe@crest.org> Sponsor the Gasification List: http://www.crest.org/discuss3.html - Other Gasification Events and Information: http://www.fsec.ucf.edu/bioam/ http://solstice.crest.org/renewables/biomass-info/gasref.shtml http://solstice.crest.org/renewables/biomass-info/