以郑州某换乘车站为例，阐述风系统设计中的公共区负荷计算、空气处理焓湿图、设备选型及系统运行模式，水系统设计的位置、原理等。对空气-水系统和全空气系统的能耗进行对比和分析，得出大系统无论是采用空气-水系统，还是采用全空气系统，冷冻水系统并没有受到影响，但空气-水系统的总耗电量约为全空气系统的89%，大大减少了输送能耗，节能效果显著。对空气-水系统和全空气系统的技术经济进行对比，得出空气-水系统能有效减少地下车站机房和风道面积，压缩土建规模，并能降低运行能耗，大幅度降低了车站规模和造价。但空气-水系统对于运行时间较长的地下车站来说其末端设备多且分散，运行维护工作量大，检修较为困难，因此对于土建规模受限的车站来说，空气-水系统是一个较好的选择。

By applying the air-water system, the space of ventilation room can be reduced effectively in subway underground station. And also operating energy consumption can be cut down a lot. However, the terminal equipments of air-water system are located in public area separately and it increased the difficulty of service and maintenance, so it will be better to be used in those underground station which the architecture dimension were extremely limited. The investigation of air-water system applied in underground station of Zhengzhou has been made, and also the comparison of energy consumption has been listed between air-water system and air-air system.

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