Title:
Biomass Conditioning - Minimization of the Storage-Related Loss of Biomass
Author(s):
Heinek, S., Mair, G., Huber, M.B., Hofmann, A., Monthaler, G., Fuchs, H.P., Larch, C., Giovannini, A.
Document(s):
Paper
Abstract:
One big problem of wood combustion is the storage related loss of biomass. Due to high water content, the growth of different fungi is enhanced, heating up the pile up to 60°C and more causing an economical relevant substance loss. The aim of this work is to quantify the substance loss of different woodchip qualities and find the best storage and pre-treatment method for woodchips and forest residues. The development of the temperature, water content, microbial growth, calorific value and loss of biomass of twelve different woodchip piles were monitored over seven months. For achieving practical conclusions different wood chip qualities namely standard-, bark woodchips and forest residues, different storage (indoor and outdoor) and pre-treatment methods (dried, fresh condition) were analyzed and evaluated. The temperature of all untreated bark and forest residue piles reached 58°C and 51 °C within the first five days. Standard woodchip piles exceeded the 30°C border marginally, holding a fewer water content. Consequently, the microbial activity was lower and no significant substance loss could be proved. After five months a substance loss of 10 % of moistly bark woodchips stored outdoor and indoor could be demonstrated. No temperature increase and substance loss could be demonstrated for pre-treated dry wood chips.
Keywords:
bioenergy, biomass, district heating, efficiency, wood chips
Topic:
Biomass Resources
Subtopic:
Biomass potentials and biomass mobilisation
Event:
20th European Biomass Conference and Exhibition
Session:
1BO.5.5
Pages:
116 - 121
ISBN:
978-88-89407-54-7
Paper DOI:
10.5071/20thEUBCE2012-1BO.5.5
Price:
FREE
