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Decoupled CFD simulation of furnace and heat exchangers in a lignite utility boiler

机译：褐煤电站锅炉炉膛和热交换器的CFD解耦模拟

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摘要

In this work, we simulated the convective section of Unit I of Meliti Power Plant (330 MWel) in Fiorina, Greece, using the macro heat exchanger model (MHEM). As boundary conditions, previous temperature and velocity field data have been used, referring to the exit surface of combustion chamber. The MHEM approximates the pressure losses, using the porous media model, and the heat transfer, using the number of transfer units (NTU) model. The results have been validated against standard operating data, provided by the plant manufacturer. The working fluid outlet temperature for each heat exchanger, the total heat transfer, and the temperature distribution throughout the whole convective section have been calculated, showing good agreement with the respective data, under full operational load. Further, a parametric investigation of the level has been conducted, in order to validate the applied boundary conditions. Overall, we evidence that the MHEM can be a quite effective alternative for heat exchanger simulations.
机译：在这项工作中，我们使用宏观换热器模型（MHEM）模拟了希腊菲奥里纳岛Meliti电厂I（330 MWel）机组I的对流截面。作为边界条件，已使用先前的温度和速度场数据，以燃烧室的出口表面为参考。 MHEM使用多孔介质模型估算压力损失，并使用传递单元数（NTU）模型估算热传递。结果已根据工厂制造商提供的标准操作数据进行了验证。计算了每个热交换器的工作流体出口温度，总传热以及整个对流部分的温度分布，与满负荷运行下的各个数据显示出很好的一致性。此外，已经对水平进行了参数研究，以验证所应用的边界条件。总体而言，我们证明MHEM可以成为换热器仿真的一种非常有效的替代方法。

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  • 来源
    《Fuel》 |2014年第ptaa期|633-648|共16页
  • 作者

    Panagiotis Drosatos; Nikos Nikolopoulos; Michalis Agraniotis; Grigorios Itskos; Panagiotis Grammelis; Emmanuel Kakaras;

  • 作者单位

    Centre for Research and Technology Hellas, Chemical Process & Energy Resources Institute, 4th Kim Ptolemais - Mpodosakeio, 50200 Ptolemais, Greece;

    Centre for Research and Technology Hellas, Chemical Process & Energy Resources Institute, 4th Kim Ptolemais - Mpodosakeio, 50200 Ptolemais, Greece;

    Centre for Research and Technology Hellas, Chemical Process & Energy Resources Institute, 4th Kim Ptolemais - Mpodosakeio, 50200 Ptolemais, Greece;

    Centre for Research and Technology Hellas, Chemical Process & Energy Resources Institute, 4th Kim Ptolemais - Mpodosakeio, 50200 Ptolemais, Greece;

    Centre for Research and Technology Hellas, Chemical Process & Energy Resources Institute, 4th Kim Ptolemais - Mpodosakeio, 50200 Ptolemais, Greece;

    Centre for Research and Technology Hellas, Chemical Process & Energy Resources Institute, 4th Kim Ptolemais - Mpodosakeio, 50200 Ptolemais, Greece,Laboratory of Steam Boilers and Thermal Plants, Thermal Engineering Sector, School of Mechanical Engineering, NTUA, Athens, Greece;

  • 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

    CFD; Decoupled simulation; Macro heat exchanger model; Heat exchangers;

    机译：差价合约解耦仿真;宏观换热器模型;换热器;

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