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Optimization of high-pressure shell-and-tube heat exchanger for syngas cooling in an IGCC

机译:IGCC合成气冷却用高压管壳式换热器的优化

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摘要

This work investigates the flow field and the heat transfer characteristics of a shell-and-tube heat exchanger for the cooling of syngas. Finite volume method based on FLUENT software was used and the RNG κ-ε. Turbulence model was adopted for modeling turbulent flow. The porosity rate, the distribution of the resistance and the distribution of the heat source are introduced to FLUENT by coupling the user defined function. The pressure drop, the temperature distribution and the variation of local heat transfer are studied under the effects of the syngas components and the operating pressure, and the effect of the arrangement of the baffles on the heat transfer is studied. The results show that higher operation pressure can improve the heat transfer, however brings bigger pressure drop. The components of the syngas significantly affect the pressure drop and the heat transfer. The arrangement of the baffles influences the fluid flow.
机译:这项工作研究了用于冷却合成气的管壳式热交换器的流场和传热特性。使用基于FLUENT软件的有限体积法和RNGκ-ε。采用湍流模型来模拟湍流。通过耦合用户定义的功能,将孔隙率,电阻分布和热源分布引入FLUENT。在合成气成分和工作压力的影响下,研究了压降,温度分布和局部传热的变化,并研究了折流板布置对传热的影响。结果表明,较高的工作压力可以改善热传递,但带来较大的压降。合成气的成分会显着影响压降和传热。挡板的布置影响流体流动。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第22期|p.4543-4551|共9页
  • 作者单位

    School of Mechanical Engineering, Institute of Thermal Energy Engineering, Shanghai jiao Tong University, Shanghai 200240, PR China;

    School of Mechanical Engineering, Institute of Thermal Energy Engineering, Shanghai jiao Tong University, Shanghai 200240, PR China;

    rnSchool of Mechanical Engineering, Institute of Thermal Energy Engineering, Shanghai jiao Tong University, Shanghai 200240, PR China;

    rnSchool of Mechanical Engineering, Institute of Thermal Energy Engineering, Shanghai jiao Tong University, Shanghai 200240, PR China;

    School of Mechanical Engineering, Institute of Thermal Energy Engineering, Shanghai jiao Tong University, Shanghai 200240, PR 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

    heat transfer; heat exchangers; CFD; syngas; IGCC;

    机译:传播热量;热交换器;差价合约合成气IGCC;

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