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Investigation of hydrodynamic and heat transfer performances in grille-sphere composite pebble beds with DEM-CFD-Taguchi method

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Listed:
  • Hu, Yingxue
  • Yang, Jian
  • Wang, Jingyu
  • Wang, Qiuwang

Abstract

In the present paper, grille-sphere composite pebble bed (GSCPB) is developed to improve the hydrodynamic and heat transfer performances for high temperature gas cooled reactor with 10 MW (HTR-10). The fluid flow and heat transfer characteristics in typical GSCPB channels are numerically investigated, and the effects of typical parameters on the pressure drop and maximum pebble temperature inside are carefully analyzed with Taguchi method. Firstly, in the GSCPB bed, the grille can not only support the pebbles to achieve a structured packing quickly, but can also enhance convective heat transfer from pebbles to the fluid. With proper design of grille inside, the heat transfer rate would be improved and the pressure drop would be reduced in GSCPB channel when compared with traditional random pebble bed. Secondly, the effect of sub-channel width to pebble diameter ratio (N) on both the hydrodynamic and heat transfer performances in GSCPB channel is quite significant. The contribution ratios of N on the pressure drop and maximum pebble temperature in GSCPB channel are of 86.3% and 81.0%, respectively. Finally, with Taguchi method, the optimum design parameter combinations are obtained for the lowest pressure drop and lowest maximum pebble temperature in GSCPB channels, respectively.

Suggested Citation

  • Hu, Yingxue & Yang, Jian & Wang, Jingyu & Wang, Qiuwang, 2018. "Investigation of hydrodynamic and heat transfer performances in grille-sphere composite pebble beds with DEM-CFD-Taguchi method," Energy, Elsevier, vol. 155(C), pages 909-920.
    • Handle: RePEc:eee:energy:v:155:y:2018:i:c:p:909-920
    DOI: 10.1016/j.energy.2018.05.018
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    References listed on IDEAS

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    1. Liu, Yan & Yang, Jian & Wang, Jing-yu & Ding, Xu-gang & Cheng, Zhi-long & Wang, Qiu-wang, 2015. "Prediction, parametric analysis and bi-objective optimization of waste heat utilization in sinter cooling bed using evolutionary algorithm," Energy, Elsevier, vol. 90(P1), pages 24-35.
    2. Lu, Jianfeng & Chen, Yuan & Ding, Jing & Wang, Weilong, 2016. "High temperature energy storage performances of methane reforming with carbon dioxide in a tubular packed reactor," Applied Energy, Elsevier, vol. 162(C), pages 1473-1482.
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    Cited by:

    1. Wang, Bo & Jia, Xiaoyu & Yang, Jian & Wang, Qiuwang, 2022. "Numerical study on temperature rise and structure optimization for a three-phase gas insulated switchgear busbar chamber," Energy, Elsevier, vol. 254(PC).
    2. Chen, Leisheng & Lee, Jaeyoung, 2020. "Effect of pebble diameters on the heat transfer characteristics of a structured pebble bed in an HTGR," Energy, Elsevier, vol. 212(C).
    3. Xu, Chengyuan & Yan, Xiaopeng & Kang, Yili & You, Lijun & You, Zhenjiang & Zhang, Hao & Zhang, Jingyi, 2019. "Friction coefficient: A significant parameter for lost circulation control and material selection in naturally fractured reservoir," Energy, Elsevier, vol. 174(C), pages 1012-1025.
    4. Zhang, Kai & Du, Shiqi & Sun, Peng & Zheng, Bin & Liu, Yongqi & Shen, Yingkai & Chang, RunZe & Han, Xiaobiao, 2021. "The effect of particle arrangement on the direct heat extraction of regular packed bed with numerical simulation," Energy, Elsevier, vol. 225(C).

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