摘要
数据中心冷却系统是数据中心能耗最大的辅助设备,可占其整体能耗40%以上。为有效提升数据中心冷却系统能效,各种新型冷却方案层出不穷,冷板式液冷技术更是解决数据中心内高热流密度芯片散热的有效手段。冷量分配单元(Coolant distribution unit-CDU)是冷板液冷技术的关键部件,决定了冷量分配的均匀性和经济性。为保障机柜整体的运行稳定性,CDU所设计的冷量分配必须是使最少制冷量的支路也可满足高热密度芯片的散热需求。本文以某一型号的数据机房CDU的分流管作为研究对象,通过数值模拟的方式,以分流管的流量分配均匀性、系统阻力作为分流管性能的评价指标,探究主管断面边长和支管管径对分流管性能的影响,并通过调整合适的主管和支管管径实现流量均匀分配的目的。
The data center cooling system is the auxiliary equipment with the largest energy consumption in the data center,which can account for more than 40%of its overall energy consumption.In order to improve the energy efficiency of the data center cooling system,various new cooling solutions are proposed.Cold plate liquid cooling technology is an effective means to solve the high flux heat dissipation of the chips in data center.Coolant distribution unit(CDU)is a key component of cold plate liquid cooling technology,which determines the uniformity and economy of cooling distribution.In the design of CDU,the branch channel distributed with the least coolant must be also to meet the heat dissipation requirements of the chips so as to ensure the operating stability of the cabinet.In this paper,the operating performance of a certain type of shunt pipe used in data center CDU were studied by numerical simulation method.By comparing and analyzing the uniformity of flow distribution and total pressure drop of the system,the influence of the dimension of the main pipe and the diameter of the branch pipe on the operating performance of the shunt pipe was explored.By adjusting the dimension of the main pipe and the diameter of the branch pipe,uniform flow distribution is achieved.
作者
唐永乐
黄华
胡伟东
张学伟
刘志春
TANG Yongle;HUANG Hua;HU Weidong;ZHANG Xuewei;LIU Zhichun(Guangdong Shenling Environmental Systems Co.,LTD;Huazhong University of Science&Technology,Wuhan 430074)
出处
《制冷》
2022年第3期75-84,共10页
Refrigeration
关键词
数据中心冷却
CUD
流量分配均匀性
数值模拟
Data center Cooling
CDU
Uniformity of Flow Distribution
Numerical Simulation
