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首页> 外文期刊>Energy Conversion & Management >Performance improvement of a direct carbon solid oxide fuel cell through integrating an Otto heat engine
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Performance improvement of a direct carbon solid oxide fuel cell through integrating an Otto heat engine

机译：通过集成奥托热机提高直接碳固氧化物燃料电池的性能

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摘要

A novel system consisting of an external heat source, a direct carbon solid oxide fuel cell (DC-SOFC), a regenerator and an air standard Otto cycle engine is proposed to improve the performance of the DC-SOFC. Considering the electrochemical/chemical reactions, ionic/electronic charge transport, mass/momentum transport and heat transfer, a 2D tubular DC-SOFC model shows that the overall heat released in the cell can be smaller than, equal to or larger than the heat required by the internal Boudouard reaction. Three different operating modes of the proposed system are identified, and accordingly, analytical expressions for the equivalent power output and efficiency of the proposed system are derived under different operating conditions. The modeling results show that the Otto heat engine can effectively recover the waste heat from the DC-SOFC for additional power production especially at large operating current density. Comprehensive parametric studies are conducted to investigate the effects of the different operating conditions of DC-SOFC on its performance and heat generation. The effects of compression ratio, internal irreversibility factor and power dissipation of the Otto heat engine on the system performance improvement are also studied.
机译：提出了一种由外部热源，直接碳固体氧化物燃料电池（DC-SOFC），蓄热室和符合空气标准的奥托循环发动机组成的新型系统，以提高DC-SOFC的性能。考虑到电化学/化学反应，离子/电子电荷传输，质量/动量传输和传热，二维管状DC-SOFC模型显示，电池中释放的总热量可以小于，等于或大于所需的热量通过内部的Boudouard反应。确定了所提出系统的三种不同的操作模式，因此，在不同操作条件下得出了所提出系统的等效功率输出和效率的解析表达式。建模结果表明，Otto热机可以有效地从DC-SOFC中回收废热，用于额外发电，尤其是在大工作电流密度下。进行了全面的参数研究，以研究DC-SOFC的不同运行条件对其性能和热量的影响。还研究了奥托热机的压缩比，内部不可逆因素和功率耗散对系统性能改善的影响。

著录项

  • 来源
    《Energy Conversion & Management》 |2018年第6期|761-770|共10页
  • 作者

    Xu Haoran; Chen Bin; Tan Peng; Zhang Houcheng; Yuan Jinliang; Irvine John T. S.; Ni Meng;

  • 作者单位

    Ningbo Univ, Dept Microelect Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China;

    Hong Kong Polytech Univ, Dept Bldg & Real Estate, Bldg Energy Res Grp, Kowloon, Hong Kong, Peoples R China;

    Hong Kong Polytech Univ, Dept Bldg & Real Estate, Bldg Energy Res Grp, Kowloon, Hong Kong, Peoples R China;

    Ningbo Univ, Dept Microelect Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China;

    Ningbo Univ, Fac Maritime & Transportat, Ningbo 315211, Zhejiang, Peoples R China;

    Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland;

    Ningbo Univ, Dept Microelect Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Solid oxide fuel cell; Carbon gasification; Air standard Otto heat engine; Performance improvement; Parametric study;

    机译：固体氧化物燃料电池;碳气化;空气标准奥托热机;性能改进;参数研究;

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