介绍了宁夏中卫云计算数据中心采用的直接新风蒸发冷却为主要冷源,风冷冷水机组和干冷器为辅助和备用冷源的空调系统。该系统利用当地干燥凉爽的室外新风,经过过滤器、盘管墙等设备段,由送风机直接送入主机房,冷空气通过冷通道、机柜、热通道的换热过程,将机柜的热量带出,最后排至室外。该系统是蒸发冷却空调在数据中心机房空调领域应用的探索,对降低机房PUE值有一定的贡献。 This paper introduces the air-conditioning system using direct fresh air evaporative cooling as the main cold source, air-cooled chiller and dry-cooler as auxiliary and standby cooling source in Zhongwei cloud computing data center in Ningxia. The system uses the local fresh and cool outdoor fresh air, through the filter, coil wall and other equipment section, sent directly to the host room by the blower, cold air through the cold aisles, racks, hot aisle heat transfer process, the cabinet heat out , Finally discharged to the outdoors. The system is the application of evaporative cooling air conditioner in the data center room air conditioner field, which has a certain contribution to reducing the PUE value of the computer room.