自然通风条件下高架地铁车站热环境分析

Thermal Environment Analysis on Elevated Subway Station under Natural Ventilation Condition

本文结合广州地区的某高架地铁车站模型,分析自然通风状况下地铁站台的热环境以及围护结构的结露风险,结果表明:内表面温度与附近空气露点温度差异大于2℃,不存在结露风险;随室外温度升高,自然通风站台的热舒适性改善,室内平均温度更接近最佳舒适温度;自然通风所带来的通风量可以满足相关规范的要求。

An elevated subway station model in Guangzhou city was used to analyze its thermal condition and condensation risk under natural ventilation condition. The results show, the inner surface temperature is 2℃ higher than dew temperature of adjacent indoor air, so there is no condensation risk under such condition; thermal comfort of subway platform is improved while outdoor temperature increases under natural ventilation; natural ventilation can meet present relevant standards.