Mark, No one has answered your basic question yet:
MA>Does anyone know or can they work out a compressibility factor ( Z factor) for a typical producer gas from a down draft biomass system? A few years ago Biomass Engineering Ltd did a test of compressing gas for firing in a micro turbine. If I recall they did look at the compressibility factors but I can't find the study. Cooled producer gas can clearly be compressed. The MW is similar to air and it seems to behave like air when compressed. So far I have seen an emotional response to a question that you didn't ask, "is compressing producer gas feasible?" That should be answered in terms of kW energy in/kW gas out ( or kJ/KJ). It is useful to know the net cost. For some reason we don't question the exergy of fossil fuels yet we hold biomass to a higher standard. Tom Possible sources: http://gasifiers.bioenergylists.org/ecnmicrogas Micro Gas Turbine Operation with Biomass Producer Gas http://gasifiers.bioenergylists.org/gasdoc/cratech/Final%20Report%20and%20Ga s%20Analysis%20for%20a%20Biomass%20Gasifier.pdf Final Report and Gas Analysis for a Biomass Gasifier _______________________________________________ Gasification mailing list [email protected] http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org http://gasifiers.bioenergylists.org http://info.bioenergylists.org
