Studies on fibrous aerosol filters. 3. Diffusional deposition of aerosols in fibrous filters.
Studies on fibrous aerosol filters. 3. Diffusional deposition of aerosols in fibrous filters.
复制标题
纤维气溶胶过滤器的研究。
DOI：
10.1093/annhyg/11.4.299
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发表时间：
1968
期刊：
影响因子：
--
通讯作者：
N. Fuchs
中科院分区：
文献类型：
--
作者：
A. Kirsch;N. Fuchs
高分散气溶胶在模型过滤器中的扩散沉积的理论方程，由一个平行交错的圆柱系统组成，在小Re下，实验证实了Pe值≥ 2。在“扇形”模型过滤器以及在真实的过滤器中，扩散沉积的收集效率在0.01 - 0.2的范围内与纤维占据的体积分数无关，并且由与上述方程类似的方程表示，但是具有经验系数。风扇模型较好地描述了真实的滤波器的特性，可用于滤波器效率的计算。模型过滤器与真实的过滤器的收集效率之比等于作用在这些过滤器中的单位纤维长度上的流体动力之比。
The theoretical equation for the diffusional deposition of high-dispersed aerosols in model filters, consisting of a system of parallel staggered cylinders at smallRewas confirmed experimentally forPe-values ≥ 2. In “fan” model filters as well as in real filters, the collection efficiency for diffusional deposition is independent of the volume fraction occupied by the fibres in the range 0·01–0·2 and is expressed by an equation similar to that mentioned above, but with an empirical coefficient. The fan model describes satisfactorily the properties of real filters and can be used for the calculation of their efficiency. The ratio of the collection efficiency in a model filter to that in real filters is equal to the ratio of hydrodynamic forces acting on the unit fibre length in these filters.