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摘要 从系统的特点、风道的尺寸和位置、风井的布置、气流组织等方面详细阐述了通风空调集成闭式系统的风道设计，并对施工中的注意事项进行了总结。 关键词 风道 集成闭式系统 双风机 气流组织 Air ducting design of closed integrated ventilation and air conditioning system in underground railway By Zhang Liqi Abstract Presents the air ducting design including the system characteristics, sizing and layout of air duct, air shaft arrangement and air distribution in detail, and concludes the points for attention in construction. Keywords air duct, closed integrated system，double fan, air distribution