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Modeling of Radiative Heat Transfer in 2D Complex Furnace of Biomass Pyrolysis Fumes: A Study of Shadow Effect

[+] Author Affiliations
Mohamed Ammar Abbassi, Kamel Halouani

METS - ENIS - IPEIS, Sfax, Tunisia

Kamel Guedri, Mohamed Naceur Borjini

Unité de Recherche d’Etude des Milieux Ionisés et Réactifs (EMIR), Sfax, Tunisia

Belkacem Zeghmati

Université de Perpignan Via Domitia, Perpignan, France

Paper No. HT2009-88023, pp. 23-31; 9 pages
doi:10.1115/HT2009-88023
From:
  • ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences
  • Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment
  • San Francisco, California, USA, July 19–23, 2009
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4356-7 | eISBN: 978-0-7918-3851-8
  • Copyright © 2009 by ASME

abstract

The radiative heat transfer problem is investigated numerically for 2D complex pilot plant of biomass pyrolysis composed by two pyrolysis chambers and a heat recuperator. In order to increase gases residence time and heat transfer, the heat recuperator is provided with many inclined, vertical, horizontal, diffuse and gray baffles of finite thickness and has a complex geometry. The Finite Volume Method (FVM) is applied to study radiative heat transfer. The blocked-off region procedure is used to treat the geometrical irregularities. Seven cases are considered in order to demonstrate the effect of adding baffles on the walls of the heat recuperator and on the walls of the pyrolysis rooms then choose the best case giving the maximum heat flux transferred to the biomass in the pyrolysis chambers. Shadow effect caused by the presence of the baffles is also studied.

Copyright © 2009 by ASME

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