The heat of combustion of producer gas is rather low compared to other fuels. Taylor reports that “producer gas” has a lower heating value of 5.7 MJ/kg versus 55.9 MJ/kg for natural gas and 44.1 MJ/kg for gasoline. The heating value of wood is typically 15-18 MJ/kg. Presumably, these values can vary somewhat from sample to sample. The same source reports the following chemical composition by volume which most likely is also variable:
Nitrogen N2 50.9%,
Carbon monoxide CO 27.0%,
Hydrogen H2 14.0%,
Carbon dioxide CO2 4.5%,
Methane CH4 3.0%,
Oxygen O2 0.6%.
this is woodgas simple analysis. take note that even though ch4 may be largest BTU contributor [as per cozy heat’s analasys last year] the CH4 can result in more CO if inadequate O2 is present during combustion.
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