| 摘要: |
| 为提高风冷模块化数据中心的运行可靠性，本文提出了一种基于相变蓄冷的应急供冷技术途径，搭建蓄冷单元实验台，研究不同进口温度对相变蓄冷单元蓄冷和释冷过程的影响。同时，对蓄冷单元中弓形肋片长度、高度、间距及蓄冷板间距进行了敏感性分析。结果表明：实验蓄冷单元至少能满足5 min的应急冷却需求；弓形肋片高度对综合传热性能影响最大，肋片长度次之，肋片间距和蓄冷板间距最小；当实验蓄冷单元的肋片高度由2mm降至1.5mm时，综合传热性能可提升57%。 |
| 关键词: 数据中心 应急供冷 相变蓄冷 强化传热 |
| DOI： |
| Received:January 05, 2022Revised:March 08, 2022 |
| 基金项目:国家自然科学基金（51776117）资助项目。 |
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| Experimental Research and Performance Analysis of a Phase-change Cold Thermal Energy Storage Unit for Emergency Cooling in Air-cooled Modular Data Centers |
|
Huang Bin1, Zheng Zi´ao1, Lu Gaofeng1, Zheng Chunyuan2, Li Bin2, Zhai Xiaoqiang1
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| (1.School of Mechanical Engineering, Shanghai Jiao Tong University;2.Guangdong Midea Heating and Ventilating Equipment Co.,Ltd.) |
| Abstract: |
| An approach based on phase-change cold thermal energy storage is proposed for the emergency cooling of an air-cooled modular data center to improve its operational reliability. An experimental setup was built for the cold thermal energy storage unit. The influence of various inlet temperatures on the charging and discharging process of the cold thermal energy storage unit was investigated. In addition, sensitivity analysis was performed on the length, height, spacings of the arcuate fins, and spacings of cold thermal energy storage plates in the unit. The results demonstrate that the experimental cold thermal energy storage unit can meet the emergency cooling demand for at least 5 min. The height of the arcuate fins indicated the greatest influence on the comprehensive heat transfer performance, followed by the fin length. The spacings of the fins and cold thermal energy storage plates have a trivial effect. When the fin height of the experimental cold thermal energy storage unit was reduced from 2.0 mm to 1.5 mm, the comprehensive heat transfer performance is improved by 57%. |
| Key words: data center emergency cooling phase-change cold thermal energy storage heat transfer enhancement |
