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Study on thermodynamic performance of SOFC-CCHP system integrating ORC and double-effect ARC

机译：SOFC-CCHP系统的热力学性能研究整合ORC和双效弧

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摘要

A combined cooling, heating and power system (CCHP) based on solid oxide fuel cell (SOFC) is studied in this paper. The top cycle consists of the SOFC subsystem and the gas turbine (GT) subsystem. The bottom cycle consists of an organic Rankine cycle (ORC) subsystem, a double-effect absorption refrigeration cycle (ARC) subsystem, and a heating subsystem. The system can operate in series mode or parallel mode through the control of the throttle valve. The proposed system is modeled and simulated in Aspen Plus and Fortran. This article carries out an overall exergy analysis and compares the difference of exergy destruction rate between series mode and parallel mode, which provides a direction for the system optimization. The effects of the following key parameters on system performance are studied separately: flow rate of fuel, fuel utilization rate and steam-tocarbon ratio. Finally, the output area diagram of the system under constant input parameters is drawn, and the possible output range of the system is analyzed to meet the user demand. The results show that the electrical efficiency of SOFC and comprehensive energy utilization rate of the system can achieve 48.42% and 87.16% under the design conditions. The electrical efficiency and the exergy efficiency of the system are 63.21% and 62.67% respectively. Whether in series mode or parallel mode, the exergy destruction rate of SOFC subsystem is the highest. Compared with the series mode, the exergy destruction rate of the ORC subsystem decreases from 10.36% to 8.34% in the parallel mode, and the exergy destruction rate of the heating subsystem increases from 2.48% to 3.69%. The proposed system is highly efficient and flexible, which provides a new direction for SOFCCCHP system.
机译：本文研究了基于固体氧化物燃料电池（SOFC）的组合冷却，加热和电力系统（CCHP）。顶周期由SOFC子系统和燃气轮机（GT）子系统组成。底部周期由有机朗肯循环（ORC）子系统，双效吸收制冷循环（ARC）子系统和加热子系统组成。系统可以通过控制节流阀以串联模式或并联模式操作。所提出的系统在Aspen Plus和Fortran中进行建模和模拟。本文进行了总体漏洞分析，并比较了串联模式和并联模式之间的漏洞破坏率的差异，为系统优化提供了方向。分别研究了以下关键参数对系统性能的影响：燃料流速，燃料利用率和蒸汽到汽币比率。最后，绘制了在恒定输入参数下系统的输出区域图，分析了系统的可能输出范围以满足用户需求。结果表明，在设计条件下，系统的SOFC和综合能源利用率的电气效率可以达到48.42％和87.16％。该系统的电效率和高级效率分别为63.21％和62.67％。无论是在串联模式还是并联模式下，SOFC子系统的漏洞破坏率最高。与串联模式相比，兽人子系统的漏胀破坏率在并联模式下从10.36％降低到8.34％，加热子系统的漏胀破坏率从2.48％增加到3.69％。所提出的系统是高效灵活的，为SOFCCCHP系统提供了新的方向。

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  • 来源
    《Energy Conversion & Management》 |2021年第8期|114326.1-114326.15|共15页
  • 作者

    Zeng Rong; Guo Baoxin; Zhang Xiaofeng; Li Hongqiang; Zhang Guoqiang;

  • 作者单位

    Xiangtan Univ Coll Civil Engn & Mech Xiangtan 411105 Hunan Peoples R China;

    Xiangtan Univ Coll Civil Engn & Mech Xiangtan 411105 Hunan Peoples R China;

    Changsha Univ Sci & Technol Coll Energy & Power Engn Changsha 410114 Hunan Peoples R China;

    Hunan Univ Coll Civil Engn Natl Ctr Int Res Collaborat Bldg Safety & Environ Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Civil Engn Natl Ctr Int Res Collaborat Bldg Safety & Environ Changsha 410082 Hunan 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

    SOFC; Double-effect ARC; Exergy destruction; Series mode; Parallel mode;

    机译：SOFC;双效弧;漏洞破坏;串联模式;并行模式;

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