Title:
Throughput Rate and Energy Consumption During Wood Chip Production in Relation to Raw Material, Chipper Type and Machine Setting
Author(s):
Kuptz, D., Hartmann, H.
Document(s):
Paper
Slide presentation
Abstract:
Throughput rate and specific energy consumption of chippers may strongly depend on raw materials, chipper size, chipper type and on specific machine settings such as knife sharpness, screen size or discharge system. Field trials (n = 36) were conducted at various wood chip production sites in Bavarian forests. In addition, stationary experiments with PTO-driven chippers = 150 kW (1 x drum, 1 x disk, 1 x spiral chipper, n = 16) and with an electric drum chipper (n = 46) were conducted at TFZ. Throughput rate (lcm/h, tdm/h) and fuel consumption (l/h, l/lcm, l/tdm) were recorded and related to raw material and chipper settings. Both throughput rate and energy consumption during field trials strongly related to chipper size. Specific fuel consumption ranged from 0.17 to 0.76 l/lcm of bulk material and from 1.13 to 4.10 l/tdm (dry matter), respectively. Mean energy consumed during chipping was 0.50 ± 0.15 % of the energy stored within one ton of dry matter. Observations from field trials could be replicated during stationary experiments, e.g. by highlighting a strong increase in fuel consumption when wood chips were produced with blunt knives.
Keywords:
wood chip production, throughput rate, energy consumption
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Production and supply of solid biofuels
Event:
22nd European Biomass Conference and Exhibition
Session:
2CO.1.5
Pages:
483 - 488
ISBN:
978-88-89407-52-3
Paper DOI:
10.5071/22ndEUBCE2014-2CO.1.5
Price:
FREE
