Izvorni znanstveni članak
https://doi.org/10.5552/crojfe.2020.632
Manipulating Chain Type and Flail Drum Speed for Better Fibre Recovery in Chain-Flail Delimber-Debarker-Chipper Operations
Raffaele Spinelli
orcid.org/0000-0001-9545-1004
; CNR IBE Via Madonna del Piano 10 I-50019 Sesto Fiorentino ITALY
Rick Mitchell
; AFORA University of the Sunshine Coast 35 Shorts Place Albany, 6330, Western Australia AUSTRALIA
Mark Brown
; AFORA University of the Sunshine Coast 35 Shorts Place Albany, 6330, Western Australia AUSTRALIA
Natascia Magagnotti
; CNR IBE Via Madonna del Piano 10 I-50019 Sesto Fiorentino ITALY
Andrew McEwan
; Nelson Mandela University University Way Summerstrand, Port Elizabeth, 6019 SOUTH AFRICA
Sažetak
A chain-flail delimber-debarker-chipper (CFDDC) was adapted for treating smaller trees than normal by replacing the standard flails with lighter ones, and by reducing flail drum rotation speed. The machine produced 16 full containers (24 t each) for the standard configuration and 24 full containers for the innovative one. For each container the researchers measured: original tree mass, chip mass, time consumption and fuel use. Results indicated that the innovative setting accrued a 12% improvement on fiber recovery compared with the standard setting (control). At the same time, productivity increased by 20% and fuel consumption was reduced by 30%. Product quality was largely unaffected, with bark content remaining below the 1% threshold specification. If at all, product quality was improved through the reduction of fine particles, possibly derived from less diffused fraying. These results have triggered the real scale adoption of the new setting by contractors who participated in the study. The success of the innovative treatment is likely explained by its better alignment with the weaker structure of small trees from low-yielding stands.
Ključne riječi
harvesting; eucalyptus; comminution; fuel; efficiency
Hrčak ID:
233586
URI
Datum izdavanja:
31.1.2020.
Posjeta: 1.214 *