객실 내부 기류의 풍속에 따른 객실 온도 균질성 영향 연구

초록

In most cases, temperature inside a railroad cabin is not uniform due to the convection flow of air inside the cabin. Because of this ununiformity, some passengers may feel hot, while other passengers may feel cold in the same cabin. There can be several methods to achieve uniform temperature distribution in the cabin. In this study, a testing train was placed in a large chamber, and thermocouples were installed inside and outside the cabin to monitor the temperature. The temperature of the chamber was kept at around ？C20 →, while heaters of the cabin was operated. In addition, an artificial airflow was applied to minimize the temperature deviation in the same cabin space. The airflow was prepared by using a conventional fan for home use. The wind speed was varied to investigate the effect of airflow on the temperature distribution. More uniform temperature distribution could be achieved by applying the fans. The temperature deviation in the same cabin could be lowered when the air speed was higher.