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

被引：44

作者：

Błaszczuk A. ^{[1
]}

Krzywański J. ^{[2
]}

机构：

[1] Institute of Advanced Energy Technologies, Czestochowa University of Technology, Dabrowskiego 73, Czestochowa

[2] Jan Dlugosz University in Czestochowa, Faculty of Mathematics and Natural Sciences, Armii Krajowej 13/15, Czestochowa

来源：

Archives of Thermodynamics | 2017年 / 38卷 / 01期

关键词：

Circulating fluidized bed; Cluster renewal approach; Flue gas recirculation; Fuzzy logic; Heat transfer coefficient;

D O I：

10.1515/aoter-2017-0006

中图分类号：

学科分类号：

摘要：

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/(m2K), 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%.

引用

页码：91 / 122

页数：31

共 68 条

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