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Research article - Peer-reviewed, 2010

Productivity of a Prototype Truck-Mounted Logging Residue Bundler and a Road-side Bundling System

Lindroos, Ola; Matisons, Magnus; Johansson, Petter; Nordfjell, Tomas;

Abstract

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.

Keywords

Bioenergy; compaction; composite residue logs; densification; road-side landing; slash; supply chain

Published in

Silva Fennica

2010, volume: 44, number: 3, pages: 547-559
Publisher: FINNISH SOC FOREST SCIENCEFINNISH FOREST RESEARCH

Authors' information

Swedish University of Agricultural Sciences, Department of Forest Resource Management
Matisons, Magnus
Swedish University of Agricultural Sciences, Department of Forest Resource Management
Johansson, Petter
Sveaskog
Swedish University of Agricultural Sciences, Department of Forest Resource Management

UKÄ Subject classification

Forest Science

Publication Identifiers

DOI: https://doi.org/10.14214/sf.148

URI (permanent link to this page)

https://res.slu.se/id/publ/60152