摘要
针对目前数据中心空调系统在冷量供应环节普遍存在的能耗大、冷却效果差等问题,本文提出将冷却装置嵌入机柜内部以实现对服务器的定量化精确供冷,利用已通过实验验证的CFD仿真平台,研究了冷却装置的排布方式和运行参数对供冷效果的影响。结果表明:当冷却装置位于两排服务器中间时冷却效果最好,温度合格系数为100%,相比于冷却装置位于两排服务器之下的初始结构,标准差和均匀系数均下降了66.67%。在风机的额定风量达到2000 m^3/h后,增大额定风量对冷却效果的提升明显减弱,在2000~2400 m^3/h范围内,平均温度和最高温度的变化量均在0.5℃左右;当风机的额定风压为250 Pa时,机柜的冷却效果最好,标准差和均匀系数最小,分别为0.66℃和0.016;当进风温度由25℃升至29℃时,服务器整体温度提高,但温度均匀性几乎不受影响,标准差和均匀系数的变化幅度最大值分别仅为0.05℃和0.002。
A data center cabinet with a built-in evaporator has been proposed to reduce the energy consumption of cooling systems and improve the cooling effect.The influence of the evaporator arrangement and operating parameters on the cooling effect was evaluated by utilizing a simulation model.The results show that the cabinet achieves the best cooling performance when an evaporator is placed in the middle of two rows of servers.The qualified coefficient of temperature is 100%,and the standard deviation and uniformity coefficient are reduced by 66.67%compared to those of the original structure(the evaporator is located under two rows of servers).When the rated air volume reaches a show improvement on 2000 m^3/h,a further increase in the air volume causes a slow improvement on the cooling effect.Within the range of 2000-2400 m^3/h,the variation between the average and maximum temperatures is approximately 0.5℃.When the rated air pressure is 250 Pa,the cooling effect of the cabinet is the highest,and the standard deviation and uniformity coefficient are 0.66℃and 0.016,respectively.As the inlet-air temperature increases from 25℃to 29℃,the overall temperature of the server rises,but the temperature uniformity is almost stable.The largest changes in standard deviation and uniformity coefficient are only 0.05℃and 0.002,respectively.
作者
孙晓晴
韩宗伟
付琪
纪强
薛达
Sun Xiaoqing;Han Zongwei;Fu Qi;Ji Qiang;Xue Da(College of Metallurgy, Northeastern University, Shenyang, 110819, China)
出处
《制冷学报》
CAS
CSCD
北大核心
2021年第1期74-81,共8页
Journal of Refrigeration
基金
国家自然科学基金(51778115)资助项目
中央高校基本科研业务专项资金(N182502043)资助
