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Heat Transfer Research
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ISSN Druckformat: 1064-2285
ISSN Online: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v39.i5.20
pages 379-389

The Effect of Combustion Dynamics on the Formation of Pollutant Emissions by Co-Firing the Wood Biomass with Gaseous Fuel

Inesa Barmina
Institute of Physics, University of Latvia, Salaspils-1, Miera Street, 32, LV-2169, Latvia
Aleksandrs Desnickis
Institute of Physics, University of Latvia, Salaspils-1, Miera Street, 32, LV-2169, Latvia
Maija Zake
Institute of Physics, University of Latvia, Salaspils-1, Miera Street, 32, LV-2169, Latvia

ABSTRAKT

The main objective of recent study is to provide a clean and effective burnout of a renewable fuel (wood pellets) by co-firing the wood fuel with a fossil fuel — propane. The effect of swirl stabilized flame dynamics on the wet wood fuel burnout and composition of pollutant emissions is studied and analyzed at different rates of propane co-firing and swirling air supply by altering the flow field and, hence, re-circulation of hot active flame species back to incoming reactants -flow of volatiles, released during wood fuel gasification. The results show that the swirl enhanced recirculation provides the formation of the low-velocity flame region with enhanced mixing of the flame compounds, while increasing the rate of propane co-firing at the air excess provides the enhanced burnout of the volatiles.


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