In the early days of the data center, there was no dedicated precision air conditioner, and there was no uniform standard. Only civilian high-power air conditioners were used. This type of air conditioner is mainly designed for people and is not suitable for use in the environment of the data center. In contrast, in constant temperature, constant humidity, dust removal and other environments, it cannot meet the requirements. Of course, there are too many restrictions in the early stage of development, and I have to use it.

    In the 1970s, the emergence of precision air conditioners dedicated to computer rooms can effectively guarantee the constant temperature and humidity environment of the data center. In terms of dust removal, the fresh air system and positive pressure dust removal in the computer room are used to meet the requirements of the data center to maintain a moderately constant level, good air cleanliness, and remote monitoring.

       After 2000, with the rapid development of the Internet, the transmission of information became more frequent, and the amount of data and calculations generated increased. People put forward higher requirements for the high availability of precision air conditioning systems. In the design, Availability, green energy saving, and dynamic cooling have become the new main development directions.

       In the 1960s, water cooling began to be applied to mainframe computers and high-performance personal computers. In the early days, because the heat load of the data center was lower, the cost of air cooling was lower than that of water cooling, so air cooling was mainly used at that time. However, with the continuous increase of equipment and the denser servers, it is found that air cooling can no longer meet the requirements, and water cooling has gradually entered the stage, because in terms of heat conduction, water is more effective than air. According to calculations, when used for cooling, the efficiency of water is 3500 times that of air. As a result, IBM researchers developed direct radiation cooling technology, which is a new breakthrough in water cooling technology. In a closed system, water is directly sprayed onto the chip backplane, and then the moisture that absorbs the heat of the chip is sucked dry. The system uses as many as 50,000 nozzles and a complex tree-like loop structure system. About ten years ago, people found that the water-cooling pipes were directly connected to the server through the rack, and worked together with the water-cooling copper seat on the processor radiator. This method has better heat dissipation efficiency than before, and later, because The characteristics of low energy consumption and high efficiency of water cooling have gradually become the main way of cooling equipment rooms.

Regardless of whether it is air-cooled or water-cooled, people are always unsatisfied with technology. In order to make the data center safer and more green and energy-saving, in order to meet the future big data era, the data center needs high density. A kind of A new refrigeration technology emerged at the historic moment, that is, the immersion liquid cooling technology that directly immerses the server into the insulating liquid to run.

       Regardless of whether it is air-cooled or water-cooled, people are always unsatisfied with technology. In order to make the data center safer and more green and energy-saving, in order to meet the future big data era, the data center needs high density. A kind of A new refrigeration technology emerged at the historic moment, that is, the immersion liquid cooling technology that directly immerses the server into the insulating liquid to run.

       Although the cost of this technology is high, the prospect of development is still very impressive. In recent years, the construction of domestic data centers is in full swing, and data centers are developing towards large and ultra-large. Liquid cooling will better play its technical advantages.