Open-air storage of fine and coarse wood chips of poplar from short rotation coppice in covered piles |
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| Affiliation: | 1. Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany;2. Institute for Agricultural Engineering, Christian-Albrechts-University Kiel, Max-Eyth-Strasse 6, 24118, Kiel, Germany;1. University of Applied Sciences Rottenburg, Schadenweilerhof, 72 108 Rottenburg am Neckar, Germany;2. University of Freiburg, Institute of Forest Sciences, Werthmannstr. 6, 79 098 Freiburg, Germany;3. KWB – Kraft und Waerme aus Biomasse GmbH, Industriestr. 235, 8321 St. Margarethen/Raab, Austria;4. KWB Deutschland GmbH Niederlassung Suedwest, Mercedesstr. 8, 72 108 Ergenzingen, Germany;5. Bioenergy 2020+ GmbH, Inffeldgasse 21b, 8010 Graz, Austria;1. Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, SE-901 83, Umeå, Sweden;2. Luleå University of Technology, Energy Engineering, Division of Energy Science, SE-971 87, Luleå, Sweden;1. CERENA, Departamento de Engenharia Química, Torre Sul, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001, Lisboa, Portugal;2. UEISSAFSV, INIAV, Ministry of Agriculture, Oeiras, Portugal;1. Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China;2. College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China;3. Department of Chemical and Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver, British Columbia, V6T 1Z3, Canada;4. Centre for Environment and Sustainability, University of Surrey, Guildford, GU2 7XH, UK;1. Faculty of Forestry, University of Applied Sciences Weihenstephan-Triesdorf, Hans-Carl-von-Carlowitz-Platz 3, 85354 Freising Weihenstephan, Germany;2. Institute of Forest Management, Center of Life and Food Sciences Weihenstephan, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, 85354 Freising Weihenstephan, Germany |
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| Abstract: | The cultivation of short rotation coppices (SRC) on agricultural land represents an economically and environmentally promising option for sustainable provision of bioenergy. Not only the further development of efficient harvesting machinery, but also the development of harvest-optimised storage systems are necessary to implement cost-efficient cultivation and use strategies for SRC in practice. The storage of fine wood chips from poplar harvest with a forage harvester results in high dry matter losses of up to 25%. Tractor-mounted mower-chippers can harvest coarse wood chips that might possess more favourable storage and drying properties. The main objective of the current research project was to develop and perform a storage experiment in which the storage behaviour of fine and coarse wood chips could be examined and compared in detail over a period of nine months. In this experiment two covered storage piles (height 3.5 m), with over 500 m3 fine and coarse wood chips respectively, were examined under practice scale conditions in Germany. After nine months of storage the fine chips in the core of the storage pile had dried to a moisture content of 34% with dry matter losses of 22%. Coarse chips, on the other hand, achieved a moisture content of 29% and dry matter losses of 21% in the same period. The maximum moisture content of 40% required by heating plants in practice is achieved by fine chips after 6.5 months and by the coarse chips already after 3.5 months. |
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| Keywords: | Short rotation coppice Poplar Wood chip Storage Drying Dry matter loss |
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