Numerical and Experimental Analysis of Heat Transfer for Solid Fuels Combustion in Fixed Bed Conditions

Energies

Wojciech Judt¹ 

[1] Department of Fuels and Renewable Energy, Faculty of Environmental Engineering and Energy, Institute of Thermal Engineering, Poznan University of Technology, 60-965 Poznan, Poland;

关键词: solid fuels;    fixed bed;    combustion;    heat transfer;    heat load;    CFD;   

DOI  :  10.3390/en13226141

来源: DOAJ

【 摘 要 】

The paper concerns the analysis of the heat transfer process that occurred during solid fuel burning in fixed bed conditions. The subject of the analysis is a cylindrical combustion chamber with an output of 12 kW heating power equipped with a retort burner for hard coal and biomass combustion. During the research, a numerical and experimental study is performed. The analysis is prepared for various heat load of the combustion chamber, which allowed for the reconstruction of real working conditions for heating devices working with solid fuels combustion. The temperature distribution obtained by the experimental way is compared with results of the numerical modeling. Local distribution of principal heat transfer magnitudes like a heat flux density and a heat transfer coefficient that occurred on the sidewall of the combustion chamber is analyzed. The analysis showed, that the participation of convection and radiation in the overall heat transfer process has resulted from the heat load of the heating device. Research results may be used for improving an analytical approach of design process taking place for domestic and industrial combustion chambers.

【 授权许可】

Unknown