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Self-heating properties of softwood samples investigated by using isothermal calorimetry
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.ORCID iD: 0000-0003-2961-296X
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.ORCID iD: 0000-0001-8179-1446
2018 (English)In: Biomass and Bioenergy, ISSN 0961-9534, E-ISSN 1873-2909, Vol. 111, p. 206-212Article in journal (Refereed) Published
Abstract [en]

The investigation focused on obtaining experimental results from the self-heating properties of different softwood samples during lab-scale storage. The samples investigated were a mixture of dried soft wood sawdust, softwood pellets 8 mm in diameter, and aged softwood sawdust stored outdoors for three months. Isothermal calorimetry was used to measure the heat released from the biomass samples and assess the contribution to self-heating during storage. Softwood samples were stored at 20 °C, 50 °C, 55 °C and 60 °C, and the metals manganese, copper and iron were added as a water solution to investigate if the presence of metals would increase the risk of self-heating. For most sample series, the highest levels of heat release were found after approximately 10 days of storage; sample series stored at 50 °C displayed the highest levels. The addition of copper resulted in levels of heat release 135% higher than samples without metal added.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 111, p. 206-212
Keywords [en]
Softwood pellets, Sawdust, Storage, Self-heating, Isothermal calorimetry, Metals
National Category
Bioenergy
Research subject
Technology (byts ev till Engineering), Bioenergy Technology; Environmental Science, Environmental technology
Identifiers
URN: urn:nbn:se:lnu:diva-64971DOI: 10.1016/j.biombioe.2017.04.008ISI: 000426994100024OAI: oai:DiVA.org:lnu-64971DiVA, id: diva2:1106776
Available from: 2017-06-08 Created: 2017-06-08 Last updated: 2018-07-10Bibliographically approved

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Rupar-Gadd, KatarinaForss, Jörgen

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