A new comminution device for high-quality chip production

The authors tested a chipper prototype adopting a new comminution device, designed to produce high quality chips when processing delimbed logs. The machine was fitted with innovative tubular blades, mounted on a flywheel. The prototype was powered by a 55kW farm tractor through the standard power ta...

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Bibliographic Details
Published in:Fuel processing technology 2012-07, Vol.99, p.69-74
Main Authors: Spinelli, Raffaele, Cavallo, Eugenio, Facello, Alessio
Format: Article
Language:English
Subjects:
Applied sciences
Biomass
diesel fuel
Energy
energy use and consumption
Energy. Thermal use of fuels
Exact sciences and technology
farms
Fuel
Fuels
Natural energy
Pellets
raw materials
Robinia
tractors
trees
wood
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Summary:The authors tested a chipper prototype adopting a new comminution device, designed to produce high quality chips when processing delimbed logs. The machine was fitted with innovative tubular blades, mounted on a flywheel. The prototype was powered by a 55kW farm tractor through the standard power take-off. The machine appeared as efficient as most conventional disc or drum chippers in the same size class, but offered a much better chip quality. Chips were free from any particles longer than 45mm, and with a very limited content of fine particles (max. 2.5%). Of course, this was achieved when using premium wood raw material, such as delimbed small logs. Performance varied with tree species: poplar was the softest and easiest to chip, whereas robinia was the hardest and required a much larger effort. Diesel fuel consumption varied between 3.4 and 4.3dm3 per oven-dry tonne.
ISSN:0378-3820
1873-7188
DOI:10.1016/j.fuproc.2012.01.034