Immersion liquid cooling is divided into single-phase liquid cooling and phase change liquid cooling according to whether the working fluid undergoes phase change.
 

At present, air cooling technology is one of the most mature and widely used cooling solutions in data centers. It achieves heat exchange through the alternating arrangement of cold/hot air passages. The hot air generated by the racks is cooled by the cold air generated by the computer room air conditioner (CRAC) or the computer room air handling unit (CRAH), and the cold air is delivered to the cold air channel between the racks through the underground vents. Among them, CRAC uses refrigerant as medium for cooling, while CRAH uses water-air heat exchanger to cool water. In a typical air-cooled data center, all server racks are arranged in rows. The air cooled by the CRAH or CRAC unit enters the data center room through the underground ventilation duct, diffuses through the servers, absorbs the heat generated by the server, enters the hot air duct, and returns to the CRAH or CRAC unit. Therefore, air cooling technology cools all the electronic components in the server rack at the same time.

Air-cooled technology has the disadvantages of low density and relatively low heat dissipation capacity. This is especially evident for high-performance computing (HPC) applications. In addition, air-cooled technology has the following disadvantages: 1) Hot spots. Due to the lack of a proper air flow control system, the heat generated by the server equipment and the cold air exchange heat unevenly, easily forming localized hot spots between and inside the server racks. Therefore, to adequately eliminate these hot spots, the data center needs to be overcooled, adding additional energy consumption. 2) Mechanical energy consumption. During the cooling process, a large part of the electric energy is used to drive the fans and pumps, so as to realize the circulation of air and water. 3) Environmental compatibility. In order to maintain the stable operation of the data center, systems using air-cooled technology usually need to run uninterrupted all year round. Therefore, even in winter, when the outdoor temperature is low, it is necessary to maintain the cooling cycle of the data center, which is not conducive to energy saving. 4) It takes up a lot of space. To be cooled effectively, data centers typically require a large amount of space for air conditioners and server racks.

It is certain that due to the unique properties of fluorocarbon surfactants; its application range will continue to expand and its application level will continue to improve. Its position in the field of surface treatment will also become increasingly important.
 

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In a word， fluorocarbon surfactants have attracted widespread attention and interest since they were synthesized by organic methods and their research and application have developed rapidly. confirm. In recent years with the continuous development of the domestic economy and the improvement of people's consumption level； It is certain that due to the unique properties of fluorocarbon surfactants; its application range will continue to expand and its application level will continue to improve. Its position in the field of surface treatment will also become increasingly important.