• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>American Society of Mechanical Engineers(ASME) Turbo Expo vol.7; 20040614-17; Vienna(AT) >TRANSIENT ANALYSIS OF SOLID OXIDE FUEL CELL HYBRIDS PART B: ANODE RECIRCULATION MODEL
【24h】

TRANSIENT ANALYSIS OF SOLID OXIDE FUEL CELL HYBRIDS PART B: ANODE RECIRCULATION MODEL

机译：固体氧化物燃料电池混合体的瞬态分析B部分：阳极再循环模型

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The aim of this work is the transient analysis of hybrid systems based on high-temperature Solid Oxide Fuel Cells (SOFC). The cell models were presented and discussed in Part A of this work. In this part attention is focused on the anode recirculation system. In a SOFC hybrid system it is necessary to recirculate part of the exhaust gas in order to maintain a proper value for the Steam-To-Carbon Ratio and to support the reforming reactions. This is carried out with an ejector, which exploits the pressure energy of the fuel to recirculate part of the anodic exhausts to fuel cell anodic side. Initially, a "dynamic" stand-alone ejector model is presented and validated for the analysis of unsteady flows. Particular attention was paid to the effect of time variation in the mixture composition, creating a general model for the unsteady simulation of flows with variable composition. To analyze the whole anodic circuit the "dynamic" model was simplified to the "lumped volume" model, which, even if it cannot properly analyze supersonic flows and shock waves, considerably reduces calculation time. So, it is suitable for transient system simulations, generally longer than a few minutes. The "lumped volume" model has been tested with the "dynamic" model and it has been used for the anodic recirculation system time-dependent simulations.
机译：这项工作的目的是对基于高温固体氧化物燃料电池（SOFC）的混合动力系统进行瞬态分析。在这项工作的A部分中介绍并讨论了细胞模型。在这一部分中，注意力集中在阳极再循环系统上。在SOFC混合动力系统中，有必要对部分废气进行再循环，以保持汽碳比的适当值并支持重整反应。这是通过喷射器执行的，该喷射器利用燃料的压力能将部分阳极废气再循环到燃料电池阳极侧。最初，提出了“动态”独立喷射器模型，并对其进行了验证，以用于分析非稳定流动。尤其要注意混合物成分随时间变化的影响，从而创建了一个通用模型，用于不稳定组成可变的流动模拟。为了分析整个阳极电路，“动态”模型简化为“集总体积”模型，即使无法正确分析超声速流和冲击波，该模型也大大减少了计算时间。因此，它适合于瞬态系统仿真，通常需要几分钟的时间。 “集总体积”模型已通过“动态”模型进行了测试，并已用于阳极再循环系统随时间变化的模拟。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 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