A multi-level simulation platform of natural gas internal reforming solid oxide fuel cell–gas turbine hybrid generation system: Part I. Solid oxide fuel cell model library
A multi-level simulation platform of natural gas internal reforming solid oxide fuel cell–gas turbine hybrid generation system: Part I. Solid oxide fuel cell model library
复制标题
DOI：
10.1016/j.jpowsour.2010.01.078
复制
发表时间：
2010-08
影响因子：
9.2
通讯作者：
Cheng Bao;Yixiang Shi;E. Croiset;Chen Li;N. Cai
中科院分区：
文献类型：
--
作者：
Cheng Bao;Yixiang Shi;E. Croiset;Chen Li;N. Cai
建立了天然气内重整固体氧化物燃料电池(SOFC)的分层模型库，以反映多层次的建模设计。首先，提出了考虑多组分燃料电动势和H2/CO联合电化学氧化的两种正负电解液(PEN)模型。其次，为了更好地预测高燃料利用率，引入了一个先进的PEN模型。第三，引入了一种近似解析笔模型，以达到精度和速度之间的平衡。单元级模型通过统一描述平面和管状几何结构中的流动和换热，为笔级模型提供边界条件。与准平衡和集总单元水平模型不同，分布式模型显示出口气体温度和平均固体温度之间存在显著差异，特别是在逆流情况下。基于解析视点因子，详细的辐射换热模型显示了更均匀的电流密度和固体温度分布。经过验证，多级SOFC模型库构成了gPROMS环境下IRSOFC-GT(燃气轮机)混合发电系统模块化仿真平台的主要组成部分。
In this paper, a hierarchical model library of natural gas internal reforming (IR) solid oxide fuel cells (SOFCs) is developed to reflect a multi-level modeling design. First, two types of positive electrolyte negative (PEN) models are presented, which take into account the electromotive force of multi-component fuel and H2/CO joint electrochemical oxidation. Secondly, an advanced PEN model is introduced for better prediction at high fuel utilization. Thirdly, an approximate analytical PEN model is introduced to achieve a balance between accuracy and speed. Cell-level modeling provides boundary conditions for PEN-level models via a unified description of flow and heat transfer in both planar and tubular geometries. Unlike quasi-equilibrium and lumped cell-level models, distributed modeling reveals a significant difference between outlet gas temperatures and average solid temperature, especially under countercurrent flow. Based on analytical view factors, the detailed radiation heat transfer model shows greater uniform distribution of current density and solid temperature. Upon validation, the multi-level SOFC model library constitutes the main component of the modular simulation platform for IRSOFC–GT (gas turbine) hybrid generation systems in a gPROMS environment.