As we all know, data centers consume a lot of energy. Among them, heat dissipation accounts for a huge proportion of its main power consumption. Out of the consideration of saving heat dissipation costs, many international Internet giants will build data centers in relatively cold places. It is estimated that by 2024, the power consumption of data centers will account for more than 5% of the total power consumption of the whole society, and energy saving has become one of the pursuits of data centers. At present, my country's Alibaba Cloud has launched a black technology-submerged liquid-cooled data center, which can cool the server in Fluorinated Solvent.

The server is immersed in a water tank filled with coolant, and the pumps at both ends of the water tank drive the coolant to circulate in the water tank. The heat generated during the operation of the server will be carried by the circulating coolant to both ends of the water tank, where it is cooled. After the liquid and the circulating cooling water are cooled by heat exchange, they return to the server and exchange heat with the server again.

One of the keys to this solution is the insulating coolant. The entire server is immersed in liquid to circulate cooling, and insulating cooling liquid is used instead of air cooling. In this way, there is no need to use any cooling equipment such as fans or air conditioners, and a lot of space is saved. The chemical stability, reliability and insulation of the coolant will be the prerequisite guarantee for the long-term safe operation of the server. The coolant currently used by Alibaba Cloud is the Novec coolant from 3M in the United States. The role of the Novec coolant is to ensure that the hardware is properly cooled. The temperature does not consume too much extra energy at the same time. According to 3M, the supercomputer with cooling support provided by Novec requires only one-tenth of the battlefield area of ​​the traditional solution, and the use of EXTINGUISHING AGENT LHF-1230 cooling mechanism eliminates the various limitations brought by the air-cooling solution. Sexual requirements. In addition, individual components can also be packaged more closely.