基于人体热调节模型的地铁车厢热环境研究

地铁车厢热环境研究常将人体边界设置为恒定热流量,无法反映人体热调节和环境间的相互作用,很难准确地评价车厢环境的热舒适性。为有效地分析车厢内环境的热舒适性,提出一种57多节点人体热调节模型与车厢热环境耦合计算方法,对北京地铁15号线列车车厢内环境的热舒适性进行模拟计算。同时,采用该方法研究3种工况送风格栅型车厢内的热环境和乘客热舒适性,得到工况1的车厢内温度和速度分布均匀,乘客具有更好的热舒适性。相比恒定热人体边界条件,该方法能更全面地分析乘客的热舒适性,对改善实际车厢内的热环境具有一定的参考意义。

Thermal Environment of Metro Carriage Based onHuman Thermal Regulation Model

Research on the thermal environment of subway carriages often sets boundary conditions of the human body to a constant heat flow, which cannot reflect the interaction between human thermal regulation and the environment, thus making it difficult to accurately evaluate the thermal comfort of the carriage environment. To effectively analyze this, a 57 multi-node human thermal regulation model, along with the carriage thermal environment, is proposed to simulate the thermal comfort of the carriage environment of Beijing Metro Line 15. Moreover, this method studies the thermal environment and passenger thermal comfort in the air-supply grille carriage under the three working conditions. The temperature and speed in the carriage of working condition 1 are found to be evenly distributed, and the passengers have better thermal comfort. Compared with the constant thermal human body boundary conditions, this method can more comprehensively analyze the thermal comfort of passengers and be used as an important reference for improving the actual thermal environment in the carriage.