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首页> 外文期刊>Journal of Engineering for Gas Turbines and Power >Evaluation of Design Performance of the Semi-Closed Oxy-Fuel Combustion Combined Cycle
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Evaluation of Design Performance of the Semi-Closed Oxy-Fuel Combustion Combined Cycle

机译：半封闭式氧气-燃料燃烧联合循环设计性能评估

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摘要

This study aims to present various design aspects and realizable performance of the natural gas fired semi-closed oxy-fuel combustion combined cycle (SCOC-CC). The design parameters of the cycle are set up on the basis of the component technologies of today's state-of-the-art gas turbines with a turbine inlet temperature between 1400℃ and 1600℃. The most important part of the cycle analysis is the turbine cooling, which considerably affects the cycle performance. A thermodynamic cooling model is introduced in order to predict the reasonable amount of turbine coolant needed to maintain the turbine blade temperature of the SCOC-CC at the levels of those of conventional gas turbines. The optimal pressure ratio ranges of the SCOC-CC for two different turbine inlet temperature levels are researched. The performance penalty due to the CO_2 capture is examined. The influences of the purity of the oxygen provided by the air separation unit on the cycle performance are also investigated. A comparison with the conventional combined cycle, adopting a post-combustion CO_2 capture, is carried out, taking into account the relationship between the performance and the CO_2 capture rate.
机译：本研究旨在介绍天然气燃烧半封闭式氧-燃料燃烧联合循环（SCOC-CC）的各个设计方面和可实现的性能。循环的设计参数是基于当今最先进的燃气轮机的组件技术设置的，涡轮机入口温度在1400℃至1600℃之间。循环分析中最重要的部分是涡轮冷却，这会大大影响循环性能。引入热力学冷却模型以预测将SCOC-CC的涡轮叶片温度保持在常规燃气轮机的水平所需的合理数量的涡轮冷却剂。研究了两种不同涡轮进口温度水平下SCOC-CC的最佳压力比范围。检查了由于捕获二氧化碳而导致的性能损失。还研究了空气分离单元提供的氧气纯度对循环性能的影响。考虑到性能和CO_2捕集率之间的关系，与采用燃烧后CO_2捕集的常规联合循环进行了比较。

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  • 来源
    《Journal of Engineering for Gas Turbines and Power》 |2012年第11期|p.111702.1-111702.10|共10页
  • 作者

    H. J. Yang; D. W. Kang; J. H. Ahn; T. S. Kim;

  • 作者单位

    Graduate School, Inha University, Incheon, 402-751 Korea;

    Graduate School, Inha University, Incheon, 402-751 Korea;

    Graduate School, Inha University, Incheon, 402-751 Korea;

    Department of Mechanical Engineering, Inha University, Incheon, 402-751 Korea;

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