Dear Tom Miles and All: I believe compressibility factors are additive. So, looking at the components, N2 is isoelectronic with CO and together they add up to > 70% of the producer gas, and H2 won't be too different.
The real problem is that with an energy content of 5 MJ/m3 (150 Btu/scf) it is almost never worth storing producer gas except in a large (outdoor) bladder. The wood is 1000 times denser than the gas, so store as wood and gasify as needed. Good luck, TOM REED On Mon, Aug 23, 2010 at 11:57 AM, Tom Miles <[email protected]> wrote: > 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<http://gasifiers.bioenergylists.org/gasdoc/cratech/Final%20Report%20and%20Ga%0As%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 > -- Dr. Thomas B. Reed The Biomass Energy Foundation The BioChar Engineering Corporation www.WoodGas.com _______________________________________________ Gasification mailing list [email protected] http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org http://gasifiers.bioenergylists.org http://info.bioenergylists.org
