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Modeling the influences of pressure and velocity variations on the microwave-induced pyrolysis of wood

Authors

  • R. Tarchini,

    1. Dipartimento di Ingegneria Chimica, Università degli Studi di Napoli “Federico II,” P.le V. Tecchio, 80125 Napoli, Italy
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  • A. Galgano,

    1. Istituto di Ricerche sulla Combustione, C.N.R., P.le V. Tecchio, 80125 Napoli, Italy
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  • C. Di Blasi

    Corresponding author
    1. Dipartimento di Ingegneria Chimica, Università degli Studi di Napoli “Federico II,” P.le V. Tecchio, 80125 Napoli, Italy
    • Dipartimento di Ingegneria Chimica, Università degli Studi di Napoli “Federico II,” P.le V. Tecchio, 80125 Napoli, Italy
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Abstract

A detailed two-dimensional mathematical model is studied for the unsteady heat-and mass-transfer equations coupled with a quasi-steady formulation of the electromagnetic field for the microwave-induced pyrolysis of a wood block. The aspects examined include the description of the flow field based on either the assumption of constant pressure and one-dimensional flow velocity directed along the wood fibers or the linked two-dimensional variation of pressure and velocity in accordance with the Darcy law and deviations from the assumptions of local thermal equilibrium between the solid and gas/vapor phase. © 2011 American Institute of Chemical Engineers AIChE J, 52: 610–624, 2012

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