Impact of Improved Ducting and Chassis Re-design for Air-Cooled Servers in a Data Center
Impact of Improved Ducting and Chassis Re-design for Air-Cooled Servers in a Data Center
复制标题
改进的管道和机箱重新设计对数据中心风冷服务器的影响
DOI：
10.1109/itherm54085.2022.9899625
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
D. Agonafer
中科院分区：
文献类型：
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作者：
Himanshu Modi;Uschas Chowdhury;D. Agonafer
近年来，云计算、网络、虚拟化和存储的显着增长，导致对数据中心的需求增加。需要最新的计算节点来满足这种需求，这会导致功耗的增加。冷却系统几乎占总能耗的30%-40%。根据 ASHRAE TC 9.9，IT 设备需要在基于冷却等级 (A1-A4) 的建议和允许温度 (18-27°C) 和湿度区域内运行。随着入口空气温度升高，风机功耗增加。每台服务器内部的中央处理器 (CPU) 和高发热组件必须在各自可靠的工作温度下运行。在大多数情况下，数据中心采用空气冷却，随着热设计功耗 (TDP) 的增加，在较低气流速率下保持较低的组件温度变得困难。对风冷服务器的机箱结构进行机箱设计优化，为主要部件的散热提供更好的气流。服务器侧面设有通风口，以绕过前置硬盘驱动器并提供额外的气流路径。对孔径、穿孔面积和风扇运行速度进行参数化，同时考虑电磁干扰 (EMI) 最佳实践并遵循指南，以避免应力集中在机架中的安装导轨和机箱上。建议在 1U 服务器 (Cisco C220 M3) 内部实施改进的管道，以在服务器压降增加和组件结温之间找到最佳平衡点。总体而言，该研究通过展示模拟结果来评估新风道和重新设计的带有侧通风口的机箱，结果显示风扇速度降低了 38%，从而使风扇功耗节省了 72%，组件温度最多下降了 16%。
In recent years, there has been a phenomenal increase in cloud computing, networking, virtualization, and storage, leading to the rise in demand for data centers. There is a need for the latest computing nodes to meet this demand, which causes an increase in power consumption. The cooling system occupies almost 30%-40% portion of the total energy consumption. Per ASHRAE TC 9.9, IT equipment needs to operate within recommended and allowable temperatures (18-27°C) and humidity zone based on the cooling classes (A1-A4). As the inlet air temperature increases, fan power consumption increases. The Central Processing Units (CPUs) and high heat-generating components inside each server must operate at their respective reliable operating temperatures. In most cases, air cooling is used in a data center, and it becomes difficult to maintain lower component temperatures at lower airflow rates with increase in Thermal Design Power (TDP). A chassis design optimization is performed over the chassis structure of the air-cooled server to provide better airflow for the cooling of the main components. Vent openings are provided on the sides of the server to bypass the front placed hard drives and provide additional airflow paths. Parametrization was performed for the hole diameters, area of perforation, and operating speed for fans while considering Electromagnetic Interference (EMI) best practices and following guidelines to avoid stress concentration on mounting rail and chassis situated in a rack. An improved duct is proposed and implemented inside a 1U server (Cisco C220 M3) to find a sweet spot between the trade-off of an increase in pressure drop across the server and junction temperature of components. Overall, the study evaluates the new duct and the redesigned chassis with side vents by showcasing the simulated results showing the reduction in the fan speeds by 38% and thus increasing the savings of fan power consumption by 72%, achieving a maximum of 16% drop in component temperatures.
提高配备液冷冷板的混合冷却服务器的入口空气温度
DOI：
10.1115/imece2018-88497
发表时间：
2018
期刊：
Proceedings of the ASME 2018 International Mechanical Engineering Congress and Exposition
影响因子：
--
作者：
Chowdhury, Uschas;Siddarth, Ashwin;Sahini, Manasa;Agonafer, Dereje
通讯作者：
Agonafer, Dereje