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Resistance of wood pellets to low airflow

Authors

  • F. Yazdanpanah,

    Corresponding author
    1. Chemical and Biological Engineering Department, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3
    • Chemical and Biological Engineering Department, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3.
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  • A. Lau,

    1. Chemical and Biological Engineering Department, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3
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  • S. Sokhansanj,

    1. Chemical and Biological Engineering Department, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3
    2. Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
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  • C. J. Lim,

    1. Chemical and Biological Engineering Department, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3
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  • X. Bi,

    1. Chemical and Biological Engineering Department, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3
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  • S. Melin

    1. Chemical and Biological Engineering Department, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3
    2. Delta Research Corporation, Delta, Canada
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Abstract

The pressure drop versus low airflow from 0.000117 to 0.1 m/s was measured across a fixed bed of wood pellets. Wood pellets were on average 6.2 mm in diameter and 12 mm in length. The moisture content of wood pellets ranged from 2.8% to 8.1%. Four equations, Darcy, Shedd, Hukill and Ergun representing flow versus static pressure drop for bulk granules were fitted to the experimental data. At airflows below 0.01 m/s, the predicted pressure drops using all four equations deviated from experimental data. This deviation was the largest for the Darcy equation and the smallest for Ergun equation. © 2011 Canadian Society for Chemical Engineering

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