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首页> 外文学位 >Hybrid turboexpander and fuel cell system for power recovery at natural gas pressure reduction stations.
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Hybrid turboexpander and fuel cell system for power recovery at natural gas pressure reduction stations.

机译：混合式涡轮膨胀机和燃料电池系统，用于天然气减压站的动力回收。

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摘要

This study investigates the performance of a hybrid turboexpander and fuel cell (HTEFC) system for power recovery at natural gas pressure reduction stations. Simulations were created to predict the performance of various system configurations.;Various system configurations were simulated and factors affecting the overall performance of the systems were investigated. Power outputs, fuel requirements and efficiencies of various system configurations were found using typical gas flow variation data. The simulation was performed using input data from the current city gate pressure reduction station operated by Utilities Kingston. Using the data provided by Utilities Kingston the performance of various potential HTEFC system configurations were compared. This thesis illustrates the benefits of using this type of analysis in a feasibility study of future HTEFC systems for power recovery at natural gas pressure reduction stations. Improvements could be made to the accuracy of the simulation results by increasing the complexity of the individual component models;Natural gas is transported at high pressure across large distances. The pressure of the natural gas must be reduced before it is delivered to the consumer. Natural gas pressure reduction is typically achieved using pressure reduction throttling valves. In a limited number of cases pressure reduction is achieved using a turboexpander. This method has the added bonus of power generation. There is a considerable temperature drop associated with the turboexpander process. Preheating is required in many cases to avoid undesirable effects of a low outlet temperature. This preheating is typically done using gas fired boilers. The hybrid system developed by Enbridge and Fuel Cell Energy is a new approach to this problem. In this system a Molten Carbonate Fuel Cell (MCFC) running on natural gas is used in conjunction with the turbine to preheat the gas and provide additional low emission electrical power
机译：这项研究调查了混合式涡轮膨胀机和燃料电池（HTEFC）系统在天然气减压站进行动力回收的性能。通过仿真来预测各种系统配置的性能。；对各种系统配置进行了仿真，并研究了影响系统整体性能的因素。使用典型的气流变化数据可以找到各种系统配置的功率输出，燃料需求和效率。使用来自公用事业金斯顿（Utilities Kingston）运营的当前城市闸门减压站的输入数据进行了模拟。使用金士顿公用事业公司提供的数据，比较了各种潜在HTEFC系统配置的性能。本文说明了在未来的HTEFC系统在天然气减压站进行功率回收的可行性研究中使用这种类型的分析的好处。通过增加单个组件模型的复杂度，可以提高模拟结果的准确性；天然气在高压下大距离传输。在将天然气输送到用户之前，必须降低其压力。通常使用减压节流阀来实现天然气减压。在少数情况下，使用涡轮膨胀机可实现减压。这种方法增加了发电量。与涡轮膨胀机过程相关的温度下降很大。在许多情况下，需要预热以避免出口温度低的不良影响。这种预热通常使用燃气锅炉进行。由Enbridge和Fuel Cell Energy开发的混合系统是解决此问题的新方法。在该系统中，将运行在天然气上的熔融碳酸盐燃料电池（MCFC）与涡轮结合使用，以预热气体并提供额外的低排放电力

著录项

  • 作者

    Howard, Clifford Robert.;

  • 作者单位

    Queen's University (Canada).;

  • 授予单位 Queen's University (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.A.Sc.
  • 年度 2010
  • 页码 179 p.
  • 总页数 179
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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