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Temperature patterns in large scale wood pellet silo storage

Author

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  • Larsson, Sylvia H.
  • Lestander, Torbjörn A.
  • Crompton, Dave
  • Melin, Staffan
  • Sokhansanj, Shahab

Abstract

Over a 7month period, temperatures were monitored in six large scale (approximately 4500 metric tons) silos for wood pellet storage. Each silo had 124 temperature sensors mounted on cables for an even distribution within the volume. During the study, silos were charged and discharged several times, creating different scenarios. Under certain circumstances, pellet temperatures increased vertically from bottom to top in an additive way, and temperatures around 65–70°C were reached at the top of the silos. At some occasions, temperatures were increasing uncontrollably and silos were emptied due to the risk of fire. In an additive scenario, a maximum heat front velocity of 12cm/h and a maximum temperature increment for a specific sensor of 2.4°C/h was found. To avoid condensation of moisture from the ventilation air on stored pellets fan operation is suggested to be controlled by a dew point algorithm.

Suggested Citation

  • Larsson, Sylvia H. & Lestander, Torbjörn A. & Crompton, Dave & Melin, Staffan & Sokhansanj, Shahab, 2012. "Temperature patterns in large scale wood pellet silo storage," Applied Energy, Elsevier, vol. 92(C), pages 322-327.
    • Handle: RePEc:eee:appene:v:92:y:2012:i:c:p:322-327
    DOI: 10.1016/j.apenergy.2011.11.012
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    Citations

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    Cited by:

    1. Sahoo, Kamalakanta & Bilek, E.M. (Ted) & Mani, Sudhagar, 2018. "Techno-economic and environmental assessments of storing woodchips and pellets for bioenergy applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 98(C), pages 27-39.
    2. Biswas, Amit Kumar & Rudolfsson, Magnus & Broström, Markus & Umeki, Kentaro, 2014. "Effect of pelletizing conditions on combustion behaviour of single wood pellet," Applied Energy, Elsevier, vol. 119(C), pages 79-84.
    3. Li, Hui & Liu, Xinhua & Legros, Robert & Bi, Xiaotao T. & Jim Lim, C. & Sokhansanj, Shahab, 2012. "Pelletization of torrefied sawdust and properties of torrefied pellets," Applied Energy, Elsevier, vol. 93(C), pages 680-685.
    4. Whittaker, Carly & Shield, Ian, 2017. "Factors affecting wood, energy grass and straw pellet durability – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 71(C), pages 1-11.
    5. Kong, Lingjun & Tian, ShuangHong & He, Chun & Du, Changming & Tu, YuTing & Xiong, Ya, 2012. "Effect of waste wrapping paper fiber as a “solid bridge” on physical characteristics of biomass pellets made from wood sawdust," Applied Energy, Elsevier, vol. 98(C), pages 33-39.
    6. Hamid Rezaei & Fahimeh Yazdan Panah & C. Jim Lim & Shahab Sokhansanj, 2020. "Pelletization of Refuse-Derived Fuel with Varying Compositions of Plastic, Paper, Organic and Wood," Sustainability, MDPI, vol. 12(11), pages 1-11, June.
    7. Jiayu Wei & Can Yao & Changdong Sheng, 2023. "Modelling Self-Heating and Self-Ignition Processes during Biomass Storage," Energies, MDPI, vol. 16(10), pages 1-17, May.

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