Puupolttoaineiden laadunhallinta: PUUT09

Translated title of the contribution: Quality management of wood fuels

Kari Hildebrand

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


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.
Translated title of the contributionQuality management of wood fuels
Original languageFinnish
Title of host publicationPuuenergian teknologiaohjelman vuosikirja 2000
PublisherVTT Technical Research Centre of Finland
ISBN (Electronic)951-38-5704-2
ISBN (Print)951-38-5703-4
Publication statusPublished - 2000
MoE publication typeA4 Article in a conference publication
EventPuuenergian teknologiaohjelman vuosiseminaari - Jyväskylä, Finland
Duration: 29 Aug 200030 Aug 2000

Publication series

SeriesVTT Symposium


SeminarPuuenergian teknologiaohjelman vuosiseminaari


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