Shifting to energy efficient hybrid cooled data centers using novel embedded floor tiles heat exchangers
Shifting to energy efficient hybrid cooled data centers using novel embedded floor tiles heat exchangers
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DOI：
10.1016/j.enconman.2021.114762
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发表时间：
2021-11
影响因子：
10.4
通讯作者：
Yaman M. Manaserh;Mohammad I. Tradat;Ahmad R. Gharaibeh;B. Sammakia;Russell Tipton
中科院分区：
文献类型：
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作者：
Yaman M. Manaserh;Mohammad I. Tradat;Ahmad R. Gharaibeh;B. Sammakia;Russell Tipton
随着IT功率密度和能耗的显著增长，数据中心行业开始采用节能和热效率高的单相冷却技术。对于世界各地的许多传统数据中心来说，缺乏主要的冷冻水源是采用单相技术的重大障碍。在本研究中，通过引入不需要对数据中心布局进行任何修改的解决方案，消除了部署液体冷却解决方案所需的设施冷冻水源。这种简单的解决方案建议将液体到空气热交换器与地砖集成，以将液体冷却的IT设备的热量喷射到室内空气中。实验验证的CFD建模方法被用来研究这些热交换器的性能。结果表明，通过在不同的冷通道中安装两个换热器，可以在设计点条件下处理大量的冷负荷。当它们在不同的操作条件下进行测试时，这些热交换器的冷却能力被示出为对供应空气温度敏感。为了克服来自供应空气温度的操作限制，考虑并讨论了在热通道中仅安装一个热交换器的替代配置。结果表明，第二种配置在对送风温度的敏感性和冷却能力方面显示出优于第一种配置的上级性能。最后，通过这种配置，数据中心非常有效地利用能量，并且实现了1.06的电力使用效率。
With the remarkable surge in IT power densities and energy consumption, the data center industry is starting to adopt energy and thermally-efficient single-phase cooling technologies. For many legacy data centers worldwide, the lack of a primary chilled water source is a substantial barrier to adopting single-phase technologies. In this study, the necessity of having a facility chilled water source for deploying liquid cooling solutions is eliminated by introducing a solution that does not require bringing in any modification of the data center layout. This simple solution proposes integrating liquid to air heat exchangers with the floor tiles to eject heat from the liquid-cooled IT equipment into the room air. An experimentally validated CFD modeling approach is used to investigate the performance of these heat exchangers. Results show that by installing two heat exchangers in different cold aisles, a significant amount of cooling load is handled at the design point conditions. When they are tested under different operational conditions, the cooling capacity of these heat exchangers is shown to be sensitive to the supply air temperature. To overcome the operational constraints stemming from the supply air temperature, an alternative configuration with just one heat exchanger installed in the hot aisle is considered and discussed. Results indicate that the second configuration shows superior performance to the first one in terms of sensitivity to supply air temperature and cooling capacity. Lastly, with this configuration, the data center utilizes energy extremely efficiently and achieves a power usage effectiveness of 1.06.