首页> 外文学位 >Development of a basic numerical model of an isooctane catalytic autothermal reformer for an automobile.
【24h】

Development of a basic numerical model of an isooctane catalytic autothermal reformer for an automobile.

机译:汽车异辛烷催化自热重整器基本数值模型的开发。

获取原文
获取原文并翻译 | 示例

摘要

A reformer is a device that converts hydrocarbon fuel to a hydrogen-enriched stream for fuel cell operation. A numerical modeling study of the performance of an isooctane catalytic autothermal reformer for a fuel cell automobile has been undertaken.; The flow within the reformer was assumed to be steady. The different chemical reactions, along with the reaction rate constants, that take place over the autothermal reforming catalyst (a ceria-based platinum catalyst), were obtained through the analysis and regression of the experimental results in a previous study.; By neglecting the radial gradients in the concentrations and the velocities of the various species in the flow and in the temperature of the reformer, a one-dimensional numerical model, based on the molar flow rate differential equations and energy equation, was developed to simulate the composition and temperature profiles along the length of the catalyst bed.; In order to investigate the effectiveness of heat transfer between the tubes of the prototype reformer, the heat transfer across the tubular wall was simulated in the one-dimensional numerical model.; In addition to the previously discussed numerical model, a preliminary two-dimensional finite-volume computational fluid dynamics (CFD) model was constructed to investigate the flow field within the prototype reformer. (Abstract shortened by UMI.)
机译:重整器是将烃类燃料转化为富氢流以进行燃料电池操作的设备。对燃料电池汽车的异辛烷催化自热重整器的性能进行了数值模拟研究。假定重整器内的流量稳定。通过对先前研究中的实验结果进行分析和回归,得出了在自热重整催化剂(基于二氧化铈的铂催化剂)上发生的不同化学反应以及反应速率常数。通过忽略重整器的流量和温度中各种物质的浓度和速度的径向梯度,建立了基于摩尔流量微分方程和能量方程的一维数值模型来模拟重整器。沿着催化剂床的长度的组成和温度分布。为了研究原型重整器的管之间的传热效果,在一维数值模型中模拟了穿过管壁的传热。除了先前讨论的数值模型之外,还构建了初步的二维有限体积计算流体动力学(CFD)模型,以研究原型重整器内的流场。 (摘要由UMI缩短。)

著录项

  • 作者

    Li, Vincent Cheuk Lam.;

  • 作者单位

    Queen's University at Kingston (Canada).;

  • 授予单位 Queen's University at Kingston (Canada).;
  • 学科 Engineering Mechanical.; Engineering Automotive.
  • 学位 M.Sc.(Eng)
  • 年度 2004
  • 页码 139 p.
  • 总页数 139
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;自动化技术及设备;
  • 关键词

  • 入库时间 2022-08-17 11:43:25

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