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High Flowrate Measurements of Fine, Coarse and Ultra-coarse (PM>10) Particles.

机译：细颗粒，粗颗粒和超粗颗粒（PM> 10）的高流量测量。

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摘要

Two instruments operated at high volumetic flowrate are investigated for sampling of PM2.5, PM10–2.5 and PM>10 .;The performance of single nozzle high flow dichotomous sampler used for sampling the PM2.5 and PM10–2.5 is characterized theoretically and experimentally. Since the role of turbulence dispersion is not clearly known for particle separation, the cutsizes of virtual impactor at different Reynolds number are experimentally obtained and applied to the design of a high flow rate virtual impactor which separates PM2.5 and PM10–2.5. Both realtime and filter based measurements are conducted in a controlled environment and final design is obtained with parametric study of the geometries. For offline chemical analysis of PM 10–2.5, a multi-filter collector are designed and tested to ensure uniform and efficient collection of particles.;A large particle inlet which is designed for sampling PM>10 at 1000 LPM is re-visited due to the mismatch between preliminary experimental results and previous numerical results and non-uniformity of particle distribution at the exit. The geometries of LPI are modified to ensure a uniform particle distribution as well as high sampling efficiency. Field measurements with other PM sampler are also conducted to evaluate the performance of fugitive dust monitor which is composed of LPI and FM-100.
机译：研究了两种在高体积流量下运行的仪器对PM2.5，PM10–2.5和PM> 10的采样。；从理论上和实验上表征了用于对PM2.5和PM10–2.5进行采样的单喷嘴大流量二分采样器的性能。 。由于湍流分散的作用对于颗粒分离尚不明确，因此通过实验获得了不同雷诺数的虚拟撞击器的切角尺寸，并将其应用于分离PM2.5和PM10-2.5的高流量虚拟撞击器的设计。基于实时和基于滤波器的测量均在受控环境中进行，并通过几何参数研究获得最终设计。为了对PM 10–2.5进行离线化学分析，设计并测试了一个多过滤器收集器，以确保均匀有效地收集颗粒。重新设计了一个大型颗粒入口，该入口设计用于以1000 LPM采样PM> 10。初步实验结果与先前的数值结果之间的不匹配以及出口处颗粒分布的不均匀性。 LPI的几何形状经过修改，以确保均匀的颗粒分布以及高采样效率。还使用其他PM采样器进行了现场测量，以评估由LPI和FM-100组成的扬尘监测仪的性能。

著录项

  • 作者

    Zhao, Guan.;

  • 作者单位

    Clarkson University.;

  • 授予单位 Clarkson University.;
  • 学科 Engineering Mechanical.;Engineering Environmental.
  • 学位 Ph.D.
  • 年度 2013
  • 页码 153 p.
  • 总页数 153
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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