摘要
通过容尘实验分析了气溶胶的特性参数对纤维滤料的非稳态过滤性能参数的影响、滤料在容尘阶段的压降Δp、各粒径微区间的分级效率随单位面积累计容尘量的变化特性,以及滤料在粉尘或气溶胶微粒沉积的各个压降阶段的最易透过粒径(MPPS)等.得到了纤维滤料的积尘填充率α的计算式,检验了滤料在容尘阶段的压降经验公式的适用性,并借助于Matlab的回归分析拟合出合适的压降修正式.
The experiments were carried out to study the filtration performance of fibrous media during dust loading period. The influence of the aerosol characteristics on the dynamic parameters of fibrous media was analyzed. The relationship of pressure drop, filtration efficiency with the accumulative loading dust was described and the most penetrating particle size （MPPS） during the particle-loading period was calculated. In addition, the calculating method for the particle-loading packing density α was developed and the empirical formula for pressure drop during dust loading period was identified based on the results of experiments. An improved method for calculating pressure drop was established by the regression analysis of Matlab.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第4期583-590,共8页
Journal of Tongji University:Natural Science
关键词
非稳态过滤
纤维滤料
最易透过粒径
积尘填充率
经验公式
dynamic filtration, fibrous media
most penetrating particle size （MPPS）
particle-loaded packing density, empirical formula
