Dielectric loss factor of sintered coal ash
1 Faculty of Mechanical and Power Engineering, Wrocław University of Science and Technology, 27 Wybrzeże Wyspiańskiego St, 50-370 Wrocław
2 Faculty of Electrical Engineering, Wrocław University of Science and Technology, 27 Wybrzeże Wyspiańskiego St, 50-370 Wrocław
* Corresponding author: firstname.lastname@example.org
This work presents the study of dissipation factor (tanδ) for ash prepared from a power plant coal. Values of tanδ were measured for samples of coal ash with additive of biomass and kaolinite, sintered at various temperatures up to 1100°C. Procedure of direct tanδ measurement is described and the results of loss factor as a function of frequency are shown. Quantitative and qualitative changes of tanδ were observed for the different tested samples. The measurement data is compared with SEM microscopic images of the samples sintered at the maximum temperature. The results suggest that direct measurement of tanδ can be a useful tool for slagging and fouling risk assessment.
© The Authors, published by EDP Sciences, 2017
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