Chipping operations and efficiency in different operational environments.

This research analyses the productivity of energy wood chipping operations at several sites in Austria and Finland. The aim of the work is to examine the differences in productivity and the effects of the operational environment for the chipping of bioenergy at the roadside. Furthermore, the study quantifies the effects of different variables such as forest energy assortments, tree species, sieve size and machines on the overall productivity of chipping. The results revealed that there are significant differences in the chipping productivity in Austria and Finland which are largely based on the use of different sieve sizes. Furthermore, the different operational environments in both countries, as well as the characteristics of the raw material also seem to have an effect on productivity. In order to improve the chipping productivity, particularly in Central European conditions, all relevant stakeholders need to work jointly to find solutions that will allow a greater variation of chip size. Furthermore, in the future more consideration has to be given to the close interlinkage between the chipper, crane and grapple. As a result, investments costs can be optimized and operational costs and stress on the machines reduced.

[1]  Jori Uusitalo,et al.  Characteristics and Significance of a Harvester Operators’ Working Technique in Thinnings , 2004 .

[2]  Bruce R. Hartsough,et al.  A survey of Italian chipping operations , 2001 .

[3]  Kazuhiro Aruga,et al.  A case study on the costs and the fuel consumption of harvesting, transporting, and chipping chains for logging residues in Japan , 2006 .

[4]  Carla Nati,et al.  Fuel consumption and productivity for two tractor-mounted chippers in relation to knife wear and raw material. , 2011 .

[5]  Bryce J. Stokes,et al.  The transportation of fuelwood from forest to facility , 1995 .

[6]  Dominik Röser,et al.  Sustainable Use of Forest Biomass for Energy , 2008 .

[7]  Raffaele Spinelli,et al.  Performance of a logging residue bundler in the temperate forests of France , 2004 .

[8]  A. Asikainen,et al.  Comminution of Logging Residues with Evolution 910R chipper, MOHA chipper truck, and Morbark 1200 tub grinder , 2013 .

[9]  Juha Laitila,et al.  Harvesting Technology and the Cost of Fuel Chips from Early Thinnings , 2008 .

[10]  Juha Laitila,et al.  Forwarding of Whole Trees After Manual and Mechanized Felling Bunching in Pre-Commercial Thinnings , 2007 .

[11]  Karl Stampfer,et al.  Current state and development possibilities of wood chip supply chains in Austria , 2006 .

[12]  R. Spinelli,et al.  Wood chips size distribution in relation to blade wear and screen use , 2010 .

[13]  Metsäteho Oy,et al.  Productivity and Cutting Costs of Thinning Harvesters , 2004 .

[14]  Karl Stampfer,et al.  Regional energy wood logistics - optimizing local fuel supply. , 2009 .

[15]  Juha Laitila,et al.  Forest energy potential in Europe (EU 27) , 2008 .

[16]  Dominik Röser,et al.  Sustainable use of forest biomass for energy : a synthesis with focus on the Baltic and Nordic region , 2008 .

[17]  Rien Visser,et al.  Analyzing and estimating delays in wood chipping operations. , 2009 .

[18]  N. Magagnotti,et al.  Determining the impact of some wood characteristics on the performance of a mobile chipper , 2011 .

[19]  R. Venterea.  Climate Change 2007: Mitigation of Climate Change , 2009 .

[20]  Tadeusz Moskalik,et al.  Efficiency of energy chips production from logging residues by the Bandit 2090. , 2011 .

[21]  A. Asikainen.  22: Discrete-event simulation of mechanized wood harvesting systems [chipping] , 1994 .

[22]  J. V. Belle,et al.  A model to estimate fossil CO2 emissions during the harvesting of forest residues for energy—with an application on the case of chipping , 2006 .