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A simultaneous approach to optimize the component and composition of zeotropic mixture for power generation systems

机译:同时优化发电系统中共沸混合物的成分和组成的方法

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摘要

The variable temperature characteristics of isobaric phase transition process for zeotropic mixture can effectively reduce the heat transfer irreversibility between working fluids and heat sources or heat sinks for thermodynamic cycle systems. One of the key problems in the application of zeotropic mixtures for power generation systems is how to determine their optimal components and compositions. The traditional method is mainly based on the exhaustive method, which means that every considered component and their compositions in the mixture are optimized one by one and mainly caused by the independence and discontinuity of components. This process will consume a large amount of computing resources, which limits the optimization of zeotropic mixtures. In order to describe the discrete components and optimize them, the selective coefficient representing every component alternative is introduced and this paper recommends a simultaneous approach to achieve the optimal components and compositions of zeotropic mixture at the same time. Two case studies with different heat sources and sinks as well as system layouts are illustrated to show the proposed approach. Besides, it also proves the systems with zeotropic mixture have better performance than that of systems with pure fluid.
机译:共沸混合物的等压相变过程的可变温度特性可有效降低工作流体与热力循环系统的热源或散热器之间的传热不可逆性。共沸混合物在发电系统中的应用中的关键问题之一是如何确定其最佳组分和组成。传统方法主要基于穷举法,这意味着混合物中每个要考虑的组分及其组成都被一个一个地优化,这主要是由组分的独立性和不连续性引起的。该过程将消耗大量的计算资源,这限制了共沸混合物的优化。为了描述离散成分并对其进行优化,引入了代表每种成分替代物的选择系数,本文推荐了一种同时实现共沸混合物最佳成分和组成的方法。通过两个案例研究,说明了不同的热源和散热器以及系统布局,以说明所提出的方法。此外,它也证明了具有共沸混合物的系统比纯流体系统具有更好的性能。

著录项

  • 来源
    《Energy Conversion & Management》 |2018年第6期|354-362|共9页
  • 作者单位

    Dalian Univ Technol, Sch Petr & Chem Engn, State Key Lab Fine Chem, Panjin 124221, Peoples R China;

    Dalian Univ Technol, Sch Petr & Chem Engn, State Key Lab Fine Chem, Panjin 124221, Peoples R China;

    Dalian Univ Technol, Sch Petr & Chem Engn, State Key Lab Fine Chem, Panjin 124221, Peoples R China;

    Dalian Univ Technol, Sch Petr & Chem Engn, State Key Lab Fine Chem, Panjin 124221, Peoples R China;

    Dalian Univ Technol, Sch Petr & Chem Engn, State Key Lab Fine Chem, Panjin 124221, Peoples R China;

    Dalian Univ Technol, Sch Petr & Chem Engn, State Key Lab Fine Chem, Panjin 124221, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Simultaneous approach; Zeotropic mixture; Organic Rankine cycle; LNG cold energy;

    机译:同步方法;共沸混合物;有机朗肯循环;LNG冷能;

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