Thank you Ken. What kind of temperature can the head stand? How is the low temperature heat discharged? If a downdraft system were used, you could get at least 700 C in the head. Designing a mechanical stoker would not be that hard since we then have mechanical power available. Peter Verhaart At 01:25 3/01/02 +0000, you wrote: >Peter & Stovers, > >The Viebach Stirling will produce about 500W of shaft power, making its >thermomechanical efficiency about 16.6%. Snip >Ken - Stoves List Archives and Website: http://www.crest.org/discussion/stoves/current/ http://www.ikweb.com/enuff/public_html/Stoves.html Stoves List Moderators: Ron Larson, ronallarson@qwest.net Alex English, english@adan.kingston.net Elsen L. Karstad, elk@wananchi.com www.chardust.com List-Post: <mailto:stoves@crest.org> List-Help: <mailto:stoves-help@crest.org> List-Unsubscribe: <mailto:stoves-unsubscribe@crest.org> List-Subscribe: <mailto:stoves-subscribe@crest.org> Sponsor the Stoves List: http://www.crest.org/discuss3.html - Other Biomass Stoves Events and Information: http://www.bioenergy2002.org http://solstice.crest.org/renewables/biomass-info/ http://solstice.crest.org/renewables/biomass-info/carbon.shtml For information about CHAMBERS STOVES http://www.ikweb.com/enuff/public_html/Chamber.htm