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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 investigations were conducted on 21 BP Oregon cutting chains, with five top-plate filing angle values: 20°, 25°, 30°, 35° and 40°. The chain saw was a 254 Husqvarna model with an Oregon 15” bar. The vibration measurements were conducted while cross-cutting pine logs, and they were performed according to the PN-91/N-01352 [1991] standard. For each of the angles tested 36 measurements were carried...
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