张家口市某数据中心间接蒸发冷却系统设计
Indirect evaporative cooling system design for a data center in Zhangjiakou
摘要：
以位于张家口市的某数据中心为例,详细介绍了该数据中心的整体空调系统设计,其中数据机房采用封闭热通道的方式,机房冷源采用间接蒸发冷却机组,配电辅助房间设置房间级精密空调,均采用弥漫式送风形式。分析了间接蒸发冷却机组全年不同运行工况下的能耗值,同时结合CFD模拟计算并对比了不同换热芯体材质和不同回风温度工况下机组的整体能耗。结果表明,将间接蒸发冷却机组的换热芯体更换为金属材质后,设备的换热效率得到提高,整机功率降低,同时在允许范围内,将回风温度提高1 ℃可以降低数据机房整体能耗,进而降低PUE(电能利用效率)。
Abstract：
Taking a data center located in Zhangjiakou as an example, this paper presents in detail the overall air conditioning system design of the data center. The data room adopts the method of closing hot aisle. The cold source of the data room uses an indirect evaporative cooling unit. The power distribution auxiliary room is equipped with room-level precision air conditioning, all of which adopt the diffuse air supply form. The energy consumption values of the indirect evaporative cooling unit under different operating conditions throughout the year are analysed. At the same time, combined with CFD simulation calculation, the overall energy consumption of the unit under different heat exchange core materials and different return air temperature conditions is compared. The results show that after replacing the heat exchange core of the indirect evaporative cooling unit with a metal material, the heat exchange efficiency of the equipment is improved and the overall power is reduced. At the same time, within the allowable range, increasing the return air temperature by 1 ℃ can reduce the overall energy consumption of the data room and thereby reduce PUE (power usage effectiveness).
Keywords:data center; indirect evaporative cooling system; CFD simulation; closing hot aisle; diffuse air supply; energy consumption