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http://www.primemachinery.com/densif/10517.htm
Info about biomass pellets
THE USE OF SWITCHGRASS BIOFUEL PELLETS AS A GREENHOUSE GAS
OFFSET STRATEGY
R. Samson t, M. Drisdelle 2, L. Mulkins 1, C. Lapointe 2, and P. Duxbury t
ABSTRACT
For more than 20 years, efforts have been made to grow dedicated biomass crops such as
switchgrass, but no economically viable, energetically efficient transformation pathway
has been described to convert this material into a usable energy form to displace fossil
fuels. To meet this goal, it is proposed that warm season grasses such as switchgrass are
used for heat related energy applications. This is considered to be the energy use with the
highest comparative advantage for switchgrass, as the application requires little
upgrading of the original energy quality of switchgrass, and it best matches the
widespread production of the crop in North America. To improve combustion efficiency,
the biomass quality of switchgrass can be upgraded through cultural management
practices to reduce the chlorine, potassium and silica content of the fuel. Densification of
the grass into a pellet form appears economically attractive and is essential to create
highly controlled combustion for space heating applications.
Switchgrass pellets can be converted into usable heat at 82-84% efficiency in a close
coupled gasifier pellet stove designed to handle moderately high ash fuels. Relative to oil
and natural gas systems, switchgrass pellets have the potential to reduce fuel heating
costs and greenhouse gas emissions in eastern Canada by approximately 30% and 90%,
respectively. Compared to all other biofuel production and energy transformation
pathways currently proposed, switchgrass pellet heating offers the highest net energy
yield per hectare, the highest energy output to input ratio, the greatest economic
advantage over fossil fuels, and the most significant potential to offset greenhouse gases.
Keywords: switchgrass, pellets, greenhouse gas emissions, energy tra
http://www.primemachinery.com/densif/10517.htm
Info about biomass pellets
THE USE OF SWITCHGRASS BIOFUEL PELLETS AS A GREENHOUSE GAS
OFFSET STRATEGY
R. Samson t, M. Drisdelle 2, L. Mulkins 1, C. Lapointe 2, and P. Duxbury t
ABSTRACT
For more than 20 years, efforts have been made to grow dedicated biomass crops such as
switchgrass, but no economically viable, energetically efficient transformation pathway
has been described to convert this material into a usable energy form to displace fossil
fuels. To meet this goal, it is proposed that warm season grasses such as switchgrass are
used for heat related energy applications. This is considered to be the energy use with the
highest comparative advantage for switchgrass, as the application requires little
upgrading of the original energy quality of switchgrass, and it best matches the
widespread production of the crop in North America. To improve combustion efficiency,
the biomass quality of switchgrass can be upgraded through cultural management
practices to reduce the chlorine, potassium and silica content of the fuel. Densification of
the grass into a pellet form appears economically attractive and is essential to create
highly controlled combustion for space heating applications.
Switchgrass pellets can be converted into usable heat at 82-84% efficiency in a close
coupled gasifier pellet stove designed to handle moderately high ash fuels. Relative to oil
and natural gas systems, switchgrass pellets have the potential to reduce fuel heating
costs and greenhouse gas emissions in eastern Canada by approximately 30% and 90%,
respectively. Compared to all other biofuel production and energy transformation
pathways currently proposed, switchgrass pellet heating offers the highest net energy
yield per hectare, the highest energy output to input ratio, the greatest economic
advantage over fossil fuels, and the most significant potential to offset greenhouse gases.
Keywords: switchgrass, pellets, greenhouse gas emissions, energy tra
