• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>European SOCF SOE Forum >Thermodynamic system study of a natural gas combined cycle (NGCC) plant with direct internal reforming (DIR)-solid oxide fuel cell (SOFC) for flexible hydrogen and power production
【24h】

Thermodynamic system study of a natural gas combined cycle (NGCC) plant with direct internal reforming (DIR)-solid oxide fuel cell (SOFC) for flexible hydrogen and power production

机译：具有直接内部重整（DIR）-Solid氧化物燃料电池（SOFC）的天然气结合循环（NGCC）植物的热力学系统研究，用于柔性氢气和电力生产

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Retrofitting existing natural gas fired power plants with SOFCs can be attractive and flexible power production systems owing to their high efficiency. The implications on plant performance due to retrofitting needs to be investigated for optimum performance of these systems. A three step approach is presented in this paper with ASPEN Plus system models to show the influence of retrofitting a NG based power plant with a DIR-SOFC stack. The three models include a reference case natural gas combined cycle (NGCC) without a SOFC stack, a gas turbine cycle (GT) retrofitted with a direct internal reforming (DIR)-SOFC stack and a third model with an addition of a steam cycle to the DIR-SOFC-GT system. Input data for the GT and steam cycles are based on the European Benchmark Task Force (EBTF) document, which defines overall performance criterions and compositions for an NGCC plant. Performance parameters and criteria for the GT are maintained the same for retrofitting SOFCs. Input data for the DIR-SOFC stack model has been obtained from literature. The models have been developed with the ASPEN Plus process simulation software and no external subroutines/programs. An iterative procedure is used to calculate key parameters like voltage and current with a fixed power output from the fuel cell stack. The reference case NGCC model (without SOFC) gives a net efficiency (LHV) of about 57.8% with a GT power output of about 285 MW. The retrofitted DIR-SOFC-GT model gives a high net efficiency (LHV) of about 66% with the SOFC stack output of about 200MW, giving an indication that retrofitting is highly advantageous. With the addition of a steam cycle, it is seen that the steam cycle reduces in size (low power output) by a large extent with the slight increase in efficiency. It is concluded that retrofitting GT with DIR-SOFCs is more advantageous than retrofitting combined cycle plants. A brief description is also given about H2 production from such systems and an exergy (2nd Law) analysis has also been presented showing exergy losses in the system.
机译：由于其高效率，改造了具有SOFC的现有天然气发电厂可以具有吸引力和灵活的电力生产系统。需要研究对植物性能引起的影响，以获得这些系统的最佳性能。本文用ASPEN加上系统模型提出了三步方法，以显示改装基于基于NG的发电厂与DIR-SOFC堆的影响。这三种型号包括没有SOFC堆叠的参考壳体天然气组合循环（NGCC），燃气涡轮循环（GT）用直接内部重整（DIR）-SOFC堆叠和第三型模型，并加入蒸汽循环DIR-SOFC-GT系统。 GT和蒸汽循环的输入数据基于欧洲基准任务（EBTF）文件，其为NGCC工厂定义了整体性能标准和组合物。对于改装SOFC，GT的性能参数和标准保持不变。从文献中获得了Dir-Sofc堆栈模型的输入数据。该模型已与Aspen Plus流程仿真软件和无外部子程序/程序开发。迭代过程用于计算电压和电流等键参数，其具有从燃料电池堆的固定电源输出。参考案例NGCC模型（不含SOFC），净效率（LHV）约为57.8％，GT功率输出为约285 mW。改造的Dir-Sofc-GT模型具有约66％的高净效率（LHV），SOFC堆栈输出约为200mW，表明改装是非常有利的。随着蒸汽循环的添加，可以看到蒸汽循环在很大程度上在很大程度上减小了尺寸（低功率输出），效率略有增加。结论是，与DIR-SOFC的改装GT比改装联合循环植物更有利。还给出了关于这些系统的H2生产的简要描述，并且还提出了一个漏洞（第2章）分析，显示了系统中的漏洞。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号