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Energy consumption in the production of chips and bundles from logging residues

100%

Rozanski H., Jablonski K.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

2010

tom 09

nr 2

25-30

The paper presents an analysis of energy consumption values for two machine energy wood harvesting technologies. Both technologies were used to produce woody fuels from logging residues, one focused on chipping and the other on bundling logging residues. The energy analysis comprised the built-in energy in the machines used, the energy contents of the fuels used and physical loads of machine operators. The energy contained in the fuels used by the machines dominated and its share in the total consumption reached 75%. The analysis of energy consumed in different technological operations showed, that the hauling of chips and bundles (50 km) were most energy consuming, and the energy consumption value reached 100 MJ/m3. Both energy wood harvesting technologies, in which wood chips as well as bundles were produced, showed similar energy consumption values, which amounted to about 196 MJ per 1 m3 of woody fuels.