N2 - The interrelation between fuzzy logic and cluster renewal approaches for heat transfer modeling in a circulating fluidized bed (CFB) has been established based on a local furnace data. The furnace data have been measured in a 1296 t/h CFB boiler with low level of flue gas recirculation. In the present study, the bed temperature and suspension density were treated as experimental variables along the furnace height. The measured bed temperature and suspension density were varied in the range of 1131–1156 K and 1.93–6.32 kg/m3, respectively. Using the heat transfer coefficient for commercial CFB combustor, two empirical heat transfer correlation were developed in terms of important operating parameters including bed temperature and also suspension density. The fuzzy logic results were found to be in good agreement with the corresponding experimental heat transfer data obtained based on cluster renewal approach. The predicted bed-to-wall heat transfer coefficient covered a range of 109–241 W/(m2K) and 111–240 W/(m2), for fuzzy logic and cluster renewal approach respectively. The divergence in calculated heat flux recovery along the furnace height between fuzzy logic and cluster renewal approach did not exceeded ±2%. L1 - http://journals.pan.pl/Content/100836/PDF/06_paper.pdf L2 - http://journals.pan.pl/Content/100836 PY - 2017 IS - No 1 EP - 122 DO - 10.1515/aoter-2017-0006 KW - fuzzy logic KW - heat transfer coefficient KW - cluster renewal approach KW - flue gas recirculation KW - circulating fluidized bed A1 - Błaszczuk, Artur A1 - Krzywański, Jarosław PB - The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences DA - 2017 T1 - A comparison of fuzzy logic and cluster renewal approaches for heat transfer modeling in a 1296 t/h CFB boiler with low level of flue gas recirculation SP - 91 UR - http://journals.pan.pl/dlibra/publication/edition/100836 T2 - Archives of Thermodynamics