DETERMINATION OF WIDENING OF AEROSOL PULSES IN CAPILLARIES DIFFUSION BATTERY

YANG Tongzai; CHEN Yinliang; XIONG Wang; MA Jun; YE Shiyou; YANG Yanqiu; YU Zhongjin

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DETERMINATION OF WIDENING OF AEROSOL PULSES IN CAPILLARIES DIFFUSION BATTERY

更新时间：2025-12-10

- DETERMINATION OF WIDENING OF AEROSOL PULSES IN CAPILLARIES DIFFUSION BATTERY
- CIESC Journal Issue 8, Pages: 1262-1267(2004)
- 作者机构：
  
  中国工程物理研究院核物理与化学研究所,四川,绵阳,621900
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 August 2004，
  
  Published：25 August 2004
- 稿件说明：
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YANG Tongzai, CHEN Yinliang, XIONG Wang, et al. DETERMINATION OF WIDENING OF AEROSOL PULSES IN CAPILLARIES DIFFUSION BATTERY[J]. CIESC Journal, 2004, (8): 1262-1267.
DOI：

YANG Tongzai, CHEN Yinliang, XIONG Wang, et al. DETERMINATION OF WIDENING OF AEROSOL PULSES IN CAPILLARIES DIFFUSION BATTERY[J]. CIESC Journal, 2004, (8): 1262-1267. DOI：

摘要

气溶胶粒子在毛细管中的输运过程是一个谱带展宽的过程，影响谱带展宽的因素大体上可分为柱内和柱外效应两大部分.在Reynolds数0.07～0.26范围内，采用亚微米聚苯乙烯球形硬气溶胶粒子脉冲，测定了气溶胶粒子在毛细管扩散池组中的谱带展宽，由此获得了气溶胶在毛细管中的平均保留时间和穿透率.研究了平均保留时间、穿透率与流体运动速度和气溶胶粒子大小之间的关系.实验发现：气溶胶粒子在毛细管扩散池组中的平均停留时间滞后于流体平均停留时间；气溶胶粒子在毛细管扩散池组中的穿透率随流体运动速度和气溶胶粒子粒径的减小而显著减小.研究结果在气溶胶采样、监测和泄漏评估方面具有应用价值.

Abstract

A set of equipment of real-time measurement of aerosols concentration was established to survey of the diffusional and migratory behavior of aerosols in diffusion batteries by using aerosol counting instruments and chromatography analysis.Measurements of mean residence time and penetration of submicrometer aerosols in flows in tubes were made within the range of Reynolds numbers from 0.07 to 0.26 by widening of aerosols pulses analysis of monodisperse polystyrene spheres solid particles injected in clean nitrogen flow through a diffusion battery of capillary tubes.It was shown that the penetration of aerosol significantly depended on the mean flow velocity and particles size.On the other hand

the mean aerosol velocity weakly differs from the mean flow velocity.The results obtained were important in several applications

including aerosols sampling

detection and leakage evaluation.

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