Title: Emission formation during wood log combustion in fireplaces – part I: volatile combustion stage

Authors: M. Huttunen, J. Saastamoinen, P. Kilpinen, L. Kjaldman, H. Oravainen, S. Bostrom

Addresses: VTT Technical Research Centre of Finland, P.O. Box 1000, FI-02044 VTT, Finland. ' VTT Technical Research Centre of Finland, P.O. Box 1603, FI-40101 Jyvaskyla, Finland. ' University of Kuopio, Department of Environmental Sciences, P.O. Box 1627, FI-70211 Kuopio, Finland. ' VTT Technical Research Centre of Finland, P.O. Box 1000, FI-02044 VTT, Finland. ' VTT Technical Research Centre of Finland, P.O. Box 1603, FI-40101 Jyvaskyla, Finland. ' Process Flow Ltd Oy, Puolanpuisto 1 b A 21, FI-20100 Turku, Finland

Abstract: A CFD-based tool for the analysis of combustion and emissions in batch-fired wood log combustion is introduced. It consists of submodels for drying and pyrolysis of a wood log, for combustion of volatilised fuel and char, for radiative heat transfer, and for NO formation implemented in a commercial CFD-programme (Fluent) for turbulent flows. Comparing model predictions to experimental data in a test oven shows the applicability of the different submodels and combination of them.

Keywords: CFD; wood logs; biomass combustion; emissions; pyrolysis; computational fluid dynamics; volatile combustion.

DOI: 10.1504/PCFD.2006.010028

Progress in Computational Fluid Dynamics, An International Journal, 2006 Vol.6 No.4/5, pp.200 - 208

Published online: 09 Jun 2006 *

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