A correlation between char emissivity and temperature

The radiative behaviour of coal and char particles is an important input parameter for simulations of coal combustion and gasification processes, as those typically feature elevated reactor temperatures. For consideration of radiative heat transfer, accurate knowledge of particle emissivity is a pre...

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Bibliographic Details
Published in:Fuel (Guildford) 2019-11, Vol.256, p.115889, Article 115889
Main Authors: Schiemann, Martin, Gronarz, Tim, Graeser, Philipp, Gorewoda, Jeanette, Kneer, Reinhold, Scherer, Viktor
Format: Article
Language:English
Subjects:
Coal char
Coal combustion
Emissivity
Gasification
Heat transfer
Knowledge management
Radiative heat transfer
Temperature dependence
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Summary:The radiative behaviour of coal and char particles is an important input parameter for simulations of coal combustion and gasification processes, as those typically feature elevated reactor temperatures. For consideration of radiative heat transfer, accurate knowledge of particle emissivity is a pre-requisite. Combining theoretical considerations and experimental data from literature, a temperature dependent relation for char emissivity is provided.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2019.115889