再循环自净型排风柜面风速范围的最优化研究
Numerical simulation for optimum face velocity range of recirculation filtration fume hood
摘要：
采用数值模拟方法，分析了面风速、操作面设计形式，假人高度和位置对再循环自净型排风柜性能的影响。结果显示，面风速为0.4～0.7 m/s，操作面采用拉门设计，假人站立于操作面中央操作时，排风柜内、外的气流组织形式和对柜内化学物的控制效果较好。结合实测数据分析了面风速对过滤器吸附速度的影响。
关键词：再循环自净型排风柜,面风速,气流组织,污染物浓度
Abstract：
Investigates the influence of face velocity, design of the operation panel, height and position of anthropomorphic dummy on the performance of the hood through numerical simulation. The results show that for the face velocity from 0.4 m/s to 0.7 m/s, using sliding sash, and the dummy standing in the middle of the hood for operation, the air distribution inside and outside of the hood and contaminant control effect will be better. Analyses the effect of the face velocity on adsorption velocity of the filter with tested data.
Keywords:recirculation filtration fume hood, face velocity, air distribution, contaminant concentration