某数据中心空调系统气流组织模拟研究
Air Distribution Simulation of Air Conditioning System in a Data Center
刘晨阳 1金烂聚 1何劲池 1叶荣珂 1徐洪涛 2方远2
作者信息
- 1. 国网浙江省电力有限公司 信息通信分公司,杭州 310000
- 2. 上海理工大学 能源与动力工程学院,上海 200093
- 折叠
摘要
数据中心热负荷大热量分布不均,其内部空调系统气流组织的合理性对防止服务器超温尤为重要.针对浙江国网某数据中心,利用计算流体力学(Computational Fluid Dynamics,CFD)模拟分析了不同工况下现有机房内部的气流组织与温度分布,并与ASHRAE 2011 标准进行了对比.研究结果表明:在空调出口流速为5m/s、温度为18℃时,满负荷运行的服务器中有55.3%的机柜进风温度超过了32℃;气流组织不均,不同机柜前最高风速为最低风速的5 倍;提出了一种增加地板风机的重新分配冷量的优化方案,解决了数据中心冷量分配不均匀的问题,满足了机柜全负荷状态下运行的最高温度要求,保证了该数据中心的运行安全性.
Abstract
The large and non-uniform heat load in data centers calls for the rationality of internal airflow distribution by the air conditioning system in case of server overtemperature.Aiming at a data center of Zhejiang State Grid,the airflow distribution and the temperature distribution in the data center are simulated and analyzed under different working conditions with the method of Computational Fluid Dynamics(CFD).The results have been compared with ASHRAE 2011 standard.With a setting velocity of 5 m/s and a setting temperature of 18℃at outlets of air conditioners,the intake temperature of air is higher than 32℃in 55.3%of the cabinets when the servers run at full load.The airflow distribution is uneven.The maximum airflow velocity at the air intakes of cabinets is five times of the minimum velocity.An optimization scheme of the cooling capacity redistribution is proposed with additional floor fans,which solves the problem of uneven cooling capacity distribution in the data center.The maximum temperature of the cabinets is under the limitation during full-load operation.The operation safety of the data center is satisfied.
关键词
数据中心/气流组织/计算流体力学/速度场/温度场Key words
data center/air distribution/Computational Fluid Dynamics(CFD)/airflow field/temperature field引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据