【摘要】 以数字技术为核心驱动力的第四次工业革命悄然到来，数据中心作为数字化技术的关键技术设施，其规模得到了空前发展。其中，数据中心冷却系统消耗了大量的能源，因此，许多研究人员创新性地开发出高效、节能、绿色的新型制冷系统。然而，大多数新型系统的工程应用研究很少，致使其仅停留在研究阶段。因此，文章针对近年来提出的一种新型双芯片冷板式液冷数据中心制冷系统进行试验研究。根据试验结果可知，冷却塔风机为两个芯片带来的冷却效果明显优于一次侧流量的冷却效果。此外，第一个芯片温度随二次侧泵占空比的增加先降低后增加。针对试验结果，文章也提出了一种优化控制策略，冷却塔风机和一次侧泵共同调控服务器入口温度，且当制冷量不足时，先增加风机频率后增加一次侧泵占空比。二次侧定压差控制需选取40%占空比的最佳中间设定值，既保障芯片温度安全，又实现低系统能耗。该研究为此类新型制冷系统的工程应用提供指导。更多还原

【Abstract】 The fourth industrial revolution with digital technology as the core driving force has quietly arrived, and the scale of data centers, as the key technical facilities of digital technology, has developed unprecedentedly. Among them, the cooling systems consume a large amount of energy, so many researchers have innovatively developed new cooling systems that are efficient, energy-saving, and green. However, most of the new systems have little research on engineering application, which makes them only stay in the research stage. Therefore, this paper presents an experimental study on the refrigeration system of a new dual-chip liquid-cooled data center based on cold plate proposed in recent years. According to the experimental results, it can be seen that the cooling effect brought by the cooling tower fan for the two chips is significantly better than the cooling effect of the primary side flow. In addition, the first chip temperature decreases first and then increases with the increase of the duty cycle of the secondary-side pump. According to the experimental results, this paper also proposes an optimized control strategy in which the cooling tower fan and the primary-side pump jointly regulate the server inlet temperature, and when the cooling capacity is insufficient, the fan frequency is increased first and then the primary-side pump duty cycle is increased. The fixed differential pressure control for the secondary-side needs to select the optimal intermediate setting value of 40% duty cycle, not only to protect the first chip security, but also to realize the low energy consumption. This study provides guidance for the engineering application of such new refrigeration systems.更多还原