The demand for a comfortable and healthy thermal environment must be considered while optimizing the heating, ventilation, and air conditioning (HAVC) system. Therefore, this study investigated the characteristics of the thermal environment influenced by the opening and closing of a sliding door in a subway train. During a stable condition, the indoor temperature at the supply-air outlet was clearly less than other areas. Except for the supply-air outlet and the return-air inlet, the air velocity remained stable at approximately 0.35 m/s. During the opening of the sliding door, the low-temperature area distributed at the side of the sliding door increased along with the increase of opening time. The average air velocity increased along with the increase of height of the passenger car because of the presence of the return-air inlet. The average temperature of passenger car linearly increased along with the increase in station temperature. The time for returning to stability increased along with the increase of the opening time. High station temperature decreased the time for returning to stability. The purpose of this paper is to provide useful guidance for stakeholders involved in improving the competitiveness of the subway train.

在优化采暖、通风和空调 (HAVC) 系统时，必须考虑对舒适健康的热环境的需求。因此，本研究调查了地铁列车滑动门打开和关闭所影响的热环境特征。在稳定状态下，送风口室内温度明显低于其他区域。除送风口和回风口外，风速稳定在0.35m/s左右。在推拉门开启过程中，分布在推拉门侧面的低温区域随着开启时间的增加而增加。由于回风口的存在，平均风速随着客车高度的增加而增加。客车平均温度随着车站温度的升高而线性升高。恢复稳定的时间随着开放时间的增加而增加。高站温减少了恢复稳定的时间。本文旨在为参与提高地铁列车竞争力的利益相关者提供有用的指导。