Radiative Heat Transfer Conditions in a Rotary Kiln Test Furnace Using Coal, Biomass, and Cofiring Burners

2017 ◽  
Vol 31 (7) ◽  
pp. 7482-7492 ◽  
Author(s):  
Adrian Gunnarsson ◽  
Daniel Bäckström ◽  
Robert Johansson ◽  
Christian Fredriksson ◽  
Klas Andersson
Keyword(s):  
Heat Transfer ◽  
Rotary Kiln ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Test Furnace

scholarly journals Discrete-Ordinates Modelling of the Radiative Heat Transfer in a Pilot-Scale Rotary Kiln

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2192
Author(s):  
Adrian Gunnarsson ◽  
Klas Andersson ◽  
Bradley R. Adams ◽  
Christian Fredriksson
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Rotary Kiln ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Pilot Scale ◽  
Discrete Ordinates ◽  
Conductive Heat ◽  
Rotary Kilns ◽  
Development Evaluation

This paper presents work focused on the development, evaluation and use of a 3D model for investigation of the radiative heat transfer in rotary kilns. The model applies a discrete-ordinates method to solve the radiative transfer equation considering emission, absorption and scattering of radiation by gas species and particles for cylindrical and semi-cylindrical enclosures. Modelling input data on temperature, particle distribution and gas composition in the radial, axial and angular directions are experimentally gathered in a down-scaled version of a rotary kiln. The model is tested in its capability to predict the radiative intensity and heat flux to the inner wall of the furnace and good agreement was found when compared to measurements. Including the conductive heat transfer through the furnace wall, the model also satisfactorily predicts the intermediate wall temperature. The work also includes a first study on the effect of the incident radiative heat flux to the different surfaces while adding a cold bed material. With further development of the model, it can be used to study the heat transfer in full-scale rotary kilns.

On the use of alternative fuels in rotary kiln burners — An experimental and modelling study of the effect on the radiative heat transfer conditions

2015 ◽  
Vol 138 ◽  
pp. 210-220 ◽  
Author(s):  
Daniel Bäckström ◽  
Robert Johansson ◽  
Klas Andersson ◽  
Henrik Wiinikka ◽  
Christian Fredriksson
Keyword(s):  
Heat Transfer ◽  
Rotary Kiln ◽  
Radiative Heat Transfer ◽  
Alternative Fuels ◽  
Radiative Heat ◽  
Modelling Study

Intensification of Radiative Heat Transfer and Development of New Types of Tube Furnaces

2005 ◽  
Vol 36 (6) ◽  
pp. 475-480 ◽  
Author(s):  
A. V. Stepanov ◽  
N. I. Sulzhik ◽  
V. N. Nikolaenko
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Tube Furnaces
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