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Experimental and numerical evaluation of wind-driven natural ventilation and dust suppression effects of coal sheds with porous gables

机译：煤棚与多孔山脉风力自然通风和粉尘抑制效应的实验与数值评价

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摘要

Owing to the air pollution emission restrictions, coal yards are frequently required to be sheltered by coal sheds. However, for the coal yards to be sheltered by coal sheds, the wind environment in the coal sheds must provide ventilation as well as ensure dust suppression. In this study, the wind-driven natural ventilation and dust suppression effects of coal sheds possessing porous windbreak gables are studied using wind tunnel experiment and computational fluid dynamics (CFD) numerical simulation. The wind velocities of wind-driven natural ventilation and dust coal piles and near the ventilators are obtained by the CFD simulation with re-normalization group (RNG) k-epsilon model, which are validated by the wind tunnel measurement results. The ventilation rate and the dust suppression rate are estimated for quantifying the ventilation and dust suppression effects of coal sheds with different gables. The results indicate that a windbreak gable or the combination of a porous windbreak and a solid plate can provide both aspects, thus satisfying both production and environmental requirements. This research provides a reference to determine the closure type and the key parameters in the architectural design of coal sheds. The presented framework can also be used for the further optimization and manipulation of the wind environment in relevant industrial buildings.
机译：由于空气污染排放限制，煤码经常被煤棚庇护。然而，对于煤棚庇护的煤码，煤棚的风环境必须提供通风，确保尘埃抑制。在这项研究中，使用风洞实验和计算流体动力学（CFD）数值模拟研究了具有多孔防风杆的煤棚的风力自然通风和粉尘抑制效果。通过CFD模拟与重标准化组（RNG）K-EPSILON模型的CFD模拟获得风力驱动的自然通风和粉尘堆和呼吸机附近的风速，由风隧道测量结果验证。估计通风率和灰尘抑制率用于量化煤棚与不同的Gables的通风和灰尘抑制效应。结果表明，防风山墙或多孔防风和固体板的组合可以提供两个方面，从而满足生产和环境要求。本研究提供了一种参考，用于确定煤棚的建筑设计中的闭合类型和关键参数。本框架还可用于相关工业建筑中的风环境进一步优化和操纵。

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  • 来源
    《Building and Environment》 |2020年第6期|106855.1-106855.10|共10页
  • 作者

    Su Ning; Peng Shitao; Hong Ningning; Zhang Jinlong;

  • 作者单位

    Tianjin Res Inst Water Transport Engn Key Lab Environm Protect Water Transport Engn Minist Transport Tianjin 300456 Peoples R China;

    Tianjin Res Inst Water Transport Engn Key Lab Environm Protect Water Transport Engn Minist Transport Tianjin 300456 Peoples R China;

    Tianjin Res Inst Water Transport Engn Key Lab Environm Protect Water Transport Engn Minist Transport Tianjin 300456 Peoples R China;

    Tianjin Res Inst Water Transport Engn Key Lab Environm Protect Water Transport Engn Minist Transport Tianjin 300456 Peoples R China|Tianjin Univ Technol Sch Environm Sci & Safety Engn Tianjin 303384 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Natural ventilation; Wind-erosion emission; Dust suppression; Wind tunnel test; Porous windbreak;

    机译：自然通风;风蚀排放;尘埃抑制;风洞试验;多孔防风;

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