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See MembersPage/MarcellGal/GasProducer for generic information about different types of (air-oxydant) gas producers. This is a '''combined draft gasifier''' with adjustable ejector for internal tar-recycling, designed for 5-14 kg/hour woodchips and 25-500 mg/Nm3 tar (less than Imbert, and much less than FEMA) when warmed up. 1.5kg dry fuel / 1kWh expected with 2m2 heat exchanger. (not likely to reach 1.4kg/kWh in such small size). In other words, 3-10kWe + similar thermal output. Nice blue flames (cyclone + some cooling, but no filtering). Short [http://vems.hu/producergas/video/ video intro] Other fuel: grinded straw or similar relatively dry carbonaceous feed not much more than 40% moisture dry-base) (and top closed, of course). * char-maker (large torrefaction+pyrolisys zone) * char-gasifier The small nipples are for pressure and temperature measurement. http://www.vems.hu/producergas/images/CombinedDraftGasifier/GalGasProducer_5716_m.jpg The ejector can be seen: http://www.vems.hu/producergas/images/CombinedDraftGasifier/CombinedDraftGasifier5710_m.jpg http://www.vems.hu/producergas/images/CombinedDraftGasifier/GalGasProducer_5719_m.jpg Pictures are taken without heat insulation (very important, but hard to see details with insulation on). The big tube is sized for max 300 kg/hour / m2 and the throat for 1100kg/hour/m2. Considering earlier experience (own and others'). Note that with this sizing it's unsuitable (or highly suboptimal) for saw-dust or rice-husks. According to [http://www.knowledgebank.irri.org/rkb/index.php/rice-milling/contributions-and-references-milling/further-information-byproducts/husk-and-straw-properties husk-and-straw-properties article] * 0.1m/s airflow causes 2cm (200 Pa) pressure drop per 1 meter of rice-husk bed. * 0.2m/s airflow causes 3cm (300 Pa) pressure drop per 50cm of rice-husk bed ** would be 42m3/hour with this d=273mm tube ** much better with woodchips or corn stalks
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