直接蒸发冷却空调机组制冷的数据中心气流组织模拟优化

Simulation Optimization of Airflow Distributions in Data Centers Cooled by Direct Evaporative Cooling Air Conditioning Units

针对直接蒸发冷却空调机组制冷的数据中心气流组织存在局部热点、送风不均等问题,采用Fluent仿真软件对其进行模拟分析,对其风口尺寸、位置进行优化:最终选取机房A送风口最佳尺寸为1400mm×2300mm,机房B送风口最佳尺寸为1600mm×2300mm,回风口尺寸为2300mm×1800mm;对其机柜布局进行优化,发现机房A、B的几种布局方案都存在一些局部热点,因此综合考虑在未来数据中心机房建设布局时,可以在存在局部热点的位置放置列头柜或功率较小的设备。同时综合考虑气流组织及造价等多方面因素,确定方案(3)为样本数据中心直接蒸发冷却空调机组叠放进排风方案,方案(3)也可以广泛应用于各种形式数据中心空调机组的叠放,而其他几种方案也可以结合实际对造价、气流组织的要求,适用于不同形式的数据中心,优化气流组织也是未来数据中心降低空调系统能耗的重要研究方向。

In view of the problems of local hot spots and uneven air supply in the airflow organization of data centers cooled by direct evaporative cooling air-conditioning units, Fluent simulation software was used to simulate and analysis the air outlet size and location for optimization: the best size of air outlet for Server Room A was finally selected as 1400mm×2300mm, the best size of air outlet for Server Room B was 1600mm×2300mm, and the size of return air outlet was 2300mm×1800mm;The layout of the cabinets was optimized and it was found that there were some local hot spots in several layout solutions of Server Room A and B.Therefore, when considering the layout of the future data center server room construction, column head cabinets or less powerful equipment can be placed in the locations where there are local hot spots. At the same time, considering various factors such as airflow distribution and cost, scheme(3) is identified as the sample data center direct evaporative cooling air conditioning unit stacked into and out of the air scheme, and scheme(3) can also be widely used in various forms of data center air conditioning unit stacking, while several other schemes can also be combined with the actual requirements on cost and airflow distribution and applied to different forms of data centers. The optimization of airflow distribution is also an important research direction for reducing the energy consumption of air conditioning systems in data centers in the future.