The concept of "liquid cooling" is gradually coming into people's sight, this technology has already risen, and still retains a mysterious veil today, in everyone's cognition, it is always a fresh existence, so today I will take you to understand the ultimate answer behind the mystery, full immersion liquid cooling server, the most cutting-edge "black technology"!

Liquid cooling technology is a concept corresponding to air cooling, which uses liquid instead of air as a medium to enter the server and carry away heat. Compared with air cooling, the advantage of liquid cooling technology is that it can significantly improve the cooling efficiency of the server, improve the power density of the server, reduce the size of the server, and improve the heat dissipation efficiency of the CPU.

At present, the server liquid cooling technology is mainly divided into cold plate and submerged two types, of which the cold plate is relatively mature in technology, the application is more extensive, and the submerged cooling effect is better, and the development prospects are broader.

Heat dissipation and energy consumption have always been the bottleneck that the server is difficult to break through, especially the heat dissipation problem, if there is no good solution, the development of the data center will be seriously restricted, and the usual traditional means is still the use of air cooling to heat dissipation.

However, with the explosive growth of data centers, air-cooled heat dissipation is stretched, and can not meet the rapid development of data centers, chip integration and computing speed continue to improve, air-cooled technology is stagnant, and the resulting heat dissipation problem is extremely difficult.

Then we can conclude: air cooling can no longer meet the development of data centers, this technology has always been used, we have to admit, has been relatively backward.

The traditional air-cooled heat dissipation method is a direct heat transfer method, relying on the convective heat transfer method of single-phase fluid and forced air cooling method can only be used for electronic devices with a heat flux of not more than 10W/ cm2, and it is powerless for heat flux greater than 10W/ cm2. However, the heat of the CPU chip has soared from about 1×105W/ m2 a few years ago to about 1×106 W/ m2 now.

If the heat dissipation is poor, the excessive temperature generated will not only reduce the working stability of the chip, increase the error rate, but also produce excessive thermal stress because of the excessive temperature difference between the internal and external environment of the module, affecting the electrical performance, operating frequency, mechanical strength and reliability of the chip.

Practical application shows that the failure rate of electronic components increases exponentially with the increase of operating temperature, and the reliability of the system will be reduced by 50% for every 10℃ increase in the temperature of a single semiconductor component.

High temperature will endanger the junction of the semiconductor, damage the connection interface of the circuit, increase the resistance value of the conductor and form mechanical stress damage, cause permanent damage to irreversible components, and reduce the service life of the equipment.

Hence, liquid-cooled servers. "Liquid cooling" is the dream of countless high-performance computer users, but subject to technical maturity, cost and other factors, liquid-cooled high-performance computers are always far away from ordinary users.

Zhongke Dawning concentrated on energy saving, broke through the bottleneck, launched the liquid cooling server, mature technology and priority control costs, and truly realized the industrialization of liquid cooling high-performance computers.

The motherboard is immersed in the electronic fluorination liquid with low boiling point of insulation, and the heat is taken away by the boiling of the refrigerant, and the refrigerant steam condenses at the top. Because of the effect of gravity, the cooling cycle is completed inside the cavity, without the need to export the refrigerant for secondary cooling.

Liquid-cooled server compared to air-cooled server:

First: more energy saving, more efficient, the resulting environmental effects can not be underestimated;

Second: improve CPU performance and reliability, reduce CPU operating temperature, improve CPU reliability, and enhance computing performance;

Third: reduce the wind noise generated in the fan and air duct (immersion technology does not require fans at all);

Fourth: can further improve the power density of the data center, thereby reducing the room area (submerged liquid cooling server single cabinet power density up to 200kW, the main room area is currently popular design of the room area of one-fortieth);

Fifth: Reduced investment in data center equipment, which is due to the elimination of air conditioning equipment and the reduction of server internals.

From the application level, the main users of liquid cooled servers are still large data centers and supercomputing centers. In the long run, submerged liquid cooling can solve the heat dissipation problem of higher heat flux, and will also be an important turning point for the future development of data centers.

As a result, the liquid-cooled server subverts the traditional concept and application, and even changes the form and use mode, which not only solves the security risks of the insufficient heat dissipation of the server, but also provides data center users with accurate cooling, efficient heat dissipation, energy saving, quiet and low noise and other all-round solutions.

The industrial chain change of the data center is thus opened, and the more energy-efficient data center in the future will certainly bring about the widespread popularity of liquid cooling technology, and "liquid cooling" will become the only way to upgrade the data center.

Source: Zhongke Shuguang Green Data Center