地铁直接蒸发冷却通风降温系统室外空气计算参数的选择

摘要

对于地铁车站公共区通风降温系统的直接蒸发冷却技术而言，室外空气计算参数值直接影响设备的选型，然而规范以及标准中缺少准确的室外空气计算参数值。分析了现存的几种蒸发冷却系统室外空气计算参数的确定方法，结合不同气象数据对实际地区统计计算分析比较，最终确定采用近20年夏季晚高峰负荷时平均每年同时不保证30 h 的湿球温度来确定同时刻干球温度的平均值的方法。%For the direct evaporative cooling technology applied in the public area of the underground railway station,outdoor air design conditions have a direct influence on the equipment selection.However, the existing norms and standards lack precise values.Analyses several current calculating approaches, compares the actual statistics of the meteorological data collected from different areas,and determines a relatively appropriate method for this issue:the summer evening nearly twenty years the average annual peak load while not guaranteed thirty hours wet bulb temperature to determine the average temperature in the same time air dry bulb temperature.