TY - GEN
T1 - Puupolttoaineiden laadunhallinta
T2 - Puuenergian teknologiaohjelman vuosiseminaari
AU - Hildebrand, Kari
PY - 2000
Y1 - 2000
N2 - Effects of storage techniques on the drying and quality
management of wood
fuels is studied. The work focuses on the first parts of
the delivery chain of
energy wood: piling at logging plots and at roadside
landings.
In total 28 stockpiles of logging residues were collected
in 1999, the amount of
logging residues being about 11 500 frame-m
3
. Stockpiles were collected both
from green (fresh) logging residues and from brown ones
dried at the plot for a
certain period. Part of stockpiles were collected on
sleepers, and part of
stockpiles were covered.
Under good weather conditions of the early summer, the
logging residues dried
well in the stockpiles collected in early June. Drying
proceeded most efficiently
at the beginning of the storage period, i.e., by 14-20
percentage units during the
first two months. The moisture content was low, 20-25%,
over the summer,
while the effect of autumn rains was seen as intensive
moistening in piles
located at the logging plot. The moisture content of
covered piles was 7-11
percentage units lower than that of uncovered ones.
However, the moisture
content may increase significantly in wintertime
chipping.
When the logging residues are collected to an
intermediate landing immediately
after logging, the major part of needles are recovered.
Under summertime dry
conditions, the needles may drop rather soon after
logging, and the major part
drops within less than a month.
AB - Effects of storage techniques on the drying and quality
management of wood
fuels is studied. The work focuses on the first parts of
the delivery chain of
energy wood: piling at logging plots and at roadside
landings.
In total 28 stockpiles of logging residues were collected
in 1999, the amount of
logging residues being about 11 500 frame-m
3
. Stockpiles were collected both
from green (fresh) logging residues and from brown ones
dried at the plot for a
certain period. Part of stockpiles were collected on
sleepers, and part of
stockpiles were covered.
Under good weather conditions of the early summer, the
logging residues dried
well in the stockpiles collected in early June. Drying
proceeded most efficiently
at the beginning of the storage period, i.e., by 14-20
percentage units during the
first two months. The moisture content was low, 20-25%,
over the summer,
while the effect of autumn rains was seen as intensive
moistening in piles
located at the logging plot. The moisture content of
covered piles was 7-11
percentage units lower than that of uncovered ones.
However, the moisture
content may increase significantly in wintertime
chipping.
When the logging residues are collected to an
intermediate landing immediately
after logging, the major part of needles are recovered.
Under summertime dry
conditions, the needles may drop rather soon after
logging, and the major part
drops within less than a month.
M3 - Conference article in proceedings
SN - 951-38-5703-4
T3 - VTT Symposium
SP - 205
EP - 216
BT - Puuenergian teknologiaohjelman vuosikirja 2000
PB - VTT Technical Research Centre of Finland
Y2 - 29 August 2000 through 30 August 2000
ER -