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Articles by Petter Johansson
Category : Research note
article id 148,
category
Research note
(2010).
Productivity of a prototype truck-mounted logging residue bundler and a road-side bundling system.
Silva Fennica
vol.
44
no.
3
article id 148.
https://doi.org/10.14214/sf.148
Keywords:
bioenergy;
compaction;
composite residue logs;
densification;
road-side landing;
slash;
supply chain
Abstract |
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Author Info
When recovering logging residues (LR) for bioenergy its density should be increased before road transport, otherwise a low proportion of the trucks’ load capacity will be used. One way this can be currently done is to compress LR into bundles that are forwarded to roadside landing. A less well-developed alternative is to forward loose LR and bundle it at landing. In the presented study, a prototype specifically developed for road-side bundling was found to produce larger, heavier bundles than bundling machinery intended for in-field use (mean length, diameter and raw bulk density 4.7 m, 0.8 m and 285 kg m–3, respectively, with 299–445 kg oven dry matter per bundle). The machine was also at least 30% more productive than previously described in-field bundling systems, producing 14–19 bundles per productive work hour (PWh), equivalent to 5.2–7.8 oven-dry tonnes PWh–1. Bundles were estimated to use 67–86% of an LR truck’s 30 tonnes load capacity, similar to proportions used when transporting loose LR. However, a continuous feeding and compressing process would probably almost double productivity, while longer bundles would enable full use of truck load capacity. With such improvements bundling at road-side could provide a viable alternative to current LR-recovering systems.
-
Lindroos,
Department of Forest Resource Management, Swedish University of Agricultural Sciences, Umeå, Sweden
E-mail:
ola.lindroos@srh.slu.se
- Matisons, Department of Forest Resource Management, Swedish University of Agricultural Sciences, Umeå, Sweden E-mail: mm@nn.se
- Johansson, Sveaskog Förvaltnings AB, Vindeln, Sweden E-mail: pj@nn.se
- Nordfjell, Department of Forest Resource Management, Swedish University of Agricultural Sciences, Umeå, Sweden E-mail: tn@nn.se
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