Simulation of a tubular solid oxide fuel cell stack using AspenPlus™ unit operation models
Simulation of a tubular solid oxide fuel cell stack using AspenPlus™ unit operation models
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DOI：
10.1016/j.enconman.2004.03.002
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发表时间：
2005-01-01
影响因子：
10.4
通讯作者：
Entchev, E
中科院分区：
文献类型：
--
作者：
Zhang, W;Croiset, E;Entchev, E
燃料电池系统的设计涉及燃料电池堆的优化以及工厂在效率和经济性方面的平衡。许多市售过程模拟器，例如AspenPlus TM ，可以促进固体氧化物燃料电池(SOFC)系统的分析。 SOFC 系统可能包括燃料预处理器、热交换器、涡轮机、底循环等，所有这些都可以在过程模拟软件中非常有效地建模。当前的挑战是 AspenPlus(TM) 或任何其他商业过程模拟器没有基本 SOFC 堆栈的模型。因此，为了能够使用这些模拟器之一执行 SOFC 系统模拟，必须构建一个可以在其中实现的 SOFC 堆栈模型。最常见的方法是首先使用 Fortran、Visual Basic 或 C++ 等编程语言开发完整的 SOFC 模型，然后将其作为用户定义的模型或子例程链接到商业过程模拟器。本文介绍了利用现有 AspenPlus(TM) 功能和现有单元操作模块开发 SOFC 模型的不同方法。开发的“AspenpPlus™ SOFC”模型能够提供 SOFC 运行的详细热力学和参数分析，并且可以轻松扩展以研究由 SOFC 组成的整个发电厂和发电厂的平衡，而无需与其他软件链接。通过与西门子-西屋 100 kW 级管状 SOFC 电堆进行比较来验证该模型。使用开发的模型对主要运行参数（例如利用率（U-f）、电流密度（I-c）和汽碳比（S/C））进行了敏感性分析，并对结果进行了讨论。 (C) 2004 Elsevier Ltd. 保留所有权利。
The design of a fuel cell system involves both optimization of the fuel cell stack and the balance of plant with respect to efficiency and economics. Many commercially available process simulators, such as AspenPlus(TM), can facilitate the analysis of a solid oxide fuel cell (SOFC) system. A SOFC system may include fuel pre-processors, heat exchangers, turbines, bottoming cycles, etc., all of which can be very effectively modelled in process simulation software. The current challenge is that AspenPlus(TM) or any other commercial process simulators do not have a model of a basic SOFC stack. Therefore, to enable performing SOFC system simulation using one of these simulators, one must construct an SOFC stack model that can be implemented in them. The most common approach is to develop a complete SOFC model in a programming language, such as Fortran, Visual Basic or C++, first and then link it to a commercial process simulator as a user defined model or subroutine. This paper introduces a different approach to the development of a SOFC model by utilizing existing AspenPlus(TM) functions and existing unit operation modules. The developed "AspenpPlus(TM) SOFC" model is able to provide detailed thermodynamic and parametric analyses of the SOFC operation and can easily be extended to study the entire power plant consisting of the SOFC and the balance of plant without the requirement for linking with other software. Validation of this model is performed by comparison to a Siemens-Westinghouse 100 kW class tubular SOFC stack. Sensitivity analyses of major operating parameters, such as utilization factor (U-f), current density (I-c) and steam-carbon ratio (S/C), were performed using the developed model, and the results are discussed in this paper. (C) 2004 Elsevier Ltd. All rights reserved.