کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7162495 1462861 2015 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Eulerian CFD modelling for biomass combustion. Transient simulation of an underfeed pellet boiler
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Eulerian CFD modelling for biomass combustion. Transient simulation of an underfeed pellet boiler
چکیده انگلیسی
This paper describes a transient model for biomass combustion in a fixed bed boiler. This method implements several submodels which address a variety of conversion processes and interactions between solid and gas phases. A set of Eulerian variables will be defined representing the solid phase state as well as the governing equation model for both the evolution and the thermal conversion of the bed. The solid phase components including the ash content is divided into solid and volatile elements. The fuel feeding is modelled by an advective flux term in the transport equations of the solid phase variables. The advective flux term includes a treatment that prevents the numerical diffusion beyond the bed's surface. This method also includes heat and mass transfer models between phases, particle and bed shrinkage, porous media and gas reactions. Several experimental tests have been simulated to contrast model behaviour. The primary variable profiles of the solid phase in the bed and gas phase in the furnace have been analysed. The results show reasonably good predictions for the exchanged heat and the flue gas concentrations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 101, 1 September 2015, Pages 666-680
نویسندگان
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