Quality and productivity in comminution of small-diameter tree bundles

Autor: Bo Dahlin, Ari Lauren, Aaron Petty, Dan Bergström, Ismo Tiihonen, Fulvio Di Fulvio, Matleena Rytkönen, Yrjö Nuutinen
Rok vydání: 2016
Předmět:
Zdroj: International Journal of Forest Engineering. 27:179-187
ISSN: 1913-2220
1494-2119
DOI: 10.1080/14942119.2016.1223926
Popis: Bundling small-diameter trees from thinnings has become a viable technology with the development of the Fixteri harvester-bundler. Several studies have measured the productivity of the machine, however, bundling also influences the whole supply chain. A study was conducted to investigate the quality of chips and productivity of five different conventional chippers and one grinder when comminuting bundles produced of small-diameter trees. The productivity based on dry mass was on average 44.8 tonne per effective working hour (E0 H−1), and varied considerably between the machines; 1:2.3 being the observed relation between lowest and highest performance of machines. Productivity when comminuting bundles was 1.5–3.2 times higher than normally found in the literature for unbundled (loose) material. The quality of the produced fuel chips varied between machines in dry weight share of particle sizes
Databáze: OpenAIRE