Journal article
Wood chips size distribution in relation to blade wear and screen use
Biomass and Bioenergy, Vol.34(5), pp.583-587
2010
Abstract
The study investigated the effect of wearing chipper knives on machine productivity, fuel consumption and particles size distribution. The test included two different tree species (poplar and pine), two tree parts (branches and logs) and two screen types (large and medium). Chip quality was defined by CEN international technical standards. Knife wear causes a significant reduction of chipping productivity and a remarkable increase of fuel consumption. The replacement of the standard wide mesh screen with a narrower screen has a similar effect, further decreasing productivity and increasing fuel consumption. For the same screen type and knife wear level, productivity and fuel consumption are the same for poplar and pine. Knife, tree species and tree part also have a significant impact on chip size distribution. Chips produced from logs always contain a smaller proportion of oversize particles and a higher proportion of accepts. For the same large mesh screen, poplar chips tend to be larger than pine chips and to contain a higher proportion of oversize particles. On the contrary, pine chips tend to be smaller and to contain a higher proportion of fines. The use of a narrower mesh screen on pine material does not seem to offer any significant reduction of oversize particles, whose presence is already very limited. Therefore, a standard large mesh screen should be used when chipping pine material.
Details
- Title
- Wood chips size distribution in relation to blade wear and screen use
- Authors
- C Nati (Author) - CNR IVALSA, ItalyRaffaele Spinelli (Author) - CNR IVALSA, ItalyP Fabbri (Author) - CNR IVALSA, Italy
- Publication details
- Biomass and Bioenergy, Vol.34(5), pp.583-587
- Publisher
- Pergamon
- Date published
- 2010
- DOI
- 10.1016/j.biombioe.2010.01.005
- ISSN
- 0961-9534
- Organisation Unit
- University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
- Language
- English
- Record Identifier
- 99448987302621
- Output Type
- Journal article
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