배플의 종류에 따른 지하철 터널내 자연환기구에서의 풍량증가에 관한 실험적 연구

In this study, the model was based on the natural ventilating opening of Jegi-dong station whose ventilation system is using train wind. The rate of reduction of tunnel, ventilation opening, and train was 1/20 and the driving the train model designed for two-way moving was controlled by using DC servomotor and computer. Also, the velocity of the model was controlled by being based on the model scale. To understand and measure the ventilation characteristics occurring while the model is driving, anemometer and manometer were set in the ventilating opening. The experimental study for efficient increased air volume was conducted positioning the baffles of different sizes in the natural ventilating opening. The result of the change of airflow rate when the baffle was installed improved by up to about 40% in maximum.