NUCLEAR TECHNIQUES, Volume. 46, Issue 5, 050401(2023)

Design and implementation of a porous impingent sampler for radon progeny aerosoll

Zhiyu TAN, Ling CHEN*, Weiya CHENG, Liangping CHEN, and Tianci MA
Author Affiliations
  • China Institute of Atomic Energy, Beijing 102413, China
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    Figures & Tables(20)
    Diagram of porous impact-type particle sampler
    Diagram of centripetal-type particle sampler
    Diagram of cyclone separation sampler
    Simplified physical model diagram of porous impact-type particle sampler
    Diagram of porous impact sampler model
    Simulation of 1 μm particle trajectories
    Capture efficiency curve of collector plate diameter R
    Capture efficiency curve of the distance L between the collector plate and the wall
    Capture efficiency curve of nozzle distance D
    Capture efficiency curve of the distance S from nozzle to collector plate
    Capture efficiency curve of nozzle height T
    Design diagram of the porous percussive sampler
    Schematic diagram of performance test device for multi-hole percussive sampler
    Aerosol concentration of Cin radon daughter upstream of different source items sampler
    Comparison of CFD calculation and experimental values of porous impingement sampler
    • Table 1. Structure and physical parameters of porous impingent particle sampler

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      Table 1. Structure and physical parameters of porous impingent particle sampler

      基本参量 Basic parameters数值Values
      切割粒径 Cut size dp50 / μm1
      喷嘴个数 Nozzle number N / 个6
      喷嘴直径 Nozzle diameter W / cm0.08

      雷诺数 Re (无量纲)

      Reynolds Re (dimensionless)

      1 426
      质量流量Flow mass Qm / g∙s-10.10
    • Table 2. Sampler simulates boundary conditions

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      Table 2. Sampler simulates boundary conditions

      边界Boundary条件Condition
      进气In速度入口Velocity-inlet
      出气口Out压力出口Pressure-outlet
      收集板Trap粒子捕获Scape
      壁Wall粒子反射Reflect
    • Table 3. Structural parameters of porous impingent particle sampler

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      Table 3. Structural parameters of porous impingent particle sampler

      基本参量

      Basic parameters

      数值

      Values

      收集板直径Collection plate diameter R / mm25

      收集板与内壁的距离Distance between

      collecting plate and inner wall L / mm

      20
      孔距Nozzle distance D / mm1.6

      喷嘴与收集板距离Distance between

      nozzle and collector plate S / cm

      0.08
      喷嘴高度Nozzle height T / cm0.16
    • Table 4. Comparison of capture efficiency verification indexes of different source items and theoretical simulation values

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      Table 4. Comparison of capture efficiency verification indexes of different source items and theoretical simulation values

      验证指标

      Validation index

      源项1

      Source term 1

      源项2

      Source term 2

      源项3

      Source term 3

      平均值

      Average value

      理论值

      Theoretical value

      结果偏差

      Result deviation / %

      dp50 / nm1 0601 0621 0851 0691 0006.9
      dp50/dp161.341.321.341.331.265.6
      dp84/dp501.361.331.351.351.258
    • Table 5. Comparison of mass distribution between porous impinged sampler and ELPI+ at different sampling times

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      Table 5. Comparison of mass distribution between porous impinged sampler and ELPI+ at different sampling times

      采样时间

      Sampling time / min

      多孔撞击式采样器

      Homemade sampler results / g

      平均值

      Average value / g

      ELPI

      ELPI+ result / g

      平均值

      Average value / g

      结果偏差

      Result deviation / %

      100.004 30.004 00.004 60.004 30.004 10.003 80.003 90.003 99.3
      200.008 70.008 50.008 30.008 50.007 60.007 90.008 10.007 98.1
      300.013 40.012 20.013 80.013 10.012 40.011 80.012 00.012 18.8
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    Zhiyu TAN, Ling CHEN, Weiya CHENG, Liangping CHEN, Tianci MA. Design and implementation of a porous impingent sampler for radon progeny aerosoll[J]. NUCLEAR TECHNIQUES, 2023, 46(5): 050401

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    Paper Information

    Category: Research Articles

    Received: Jan. 14, 2023

    Accepted: --

    Published Online: Jun. 30, 2023

    The Author Email:

    DOI:10.11889/j.0253-3219.2023.hjs.46.050401

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