���風気流下における局所排気装置の汚染物捕集性能に関する研究

In this study, the authors focused on passing airflow, which greatly affects the capture performance of local exhaust hood. In this paper, firstly, capture efficiency and spatial distributions of air velocity and contaminant concentration were measured by experiment to understand the capture performance under passing airflow. Especially, the effect of the passing airflow velocity on the capture efficiency was examined with various hood types. In addition, in order to establish a prediction method for capture performance, a simple prediction model of the airflow under the exhaust hood with passing airflow was studied.