Introduction to the advantages of high heat density intelligent liquid cooling chiller

For cooling equipment used in the data center industry, the traditional cooling method is air cooling. At this stage, high heat density intelligent liquid cooling water coolers using liquid cooling are gradually becoming known to the public.

1.Defects of traditional air cooling applications

Air cooling cannot meet the PUE challenge well, and the heat dissipation efficiency and cooling accuracy of air cooling are not high enough. The power consumption of GPU chips must tend to be high-density. The power of computing hardware is getting higher and higher, and the heat flow density of the chip is getting larger and larger. It is difficult to match the traditional air cooling:

1. Air cooling has low efficiency and is not suitable for high-power cabinets. Air-cooled refrigeration is a bit unable to dissipate heat for such high-density equipment. In a scenario where a small number of servers are deployed in separate cabinets, this non-intensive deployment model does not have a good heat dissipation effect in a large-scale computing power scenario. Some customers will Open the GPU server casing to increase the heat dissipation area. This deployment method has not been verified by professional CFD simulation, which is unsafe and will cause a waste of cabinet resources.
2. Air cooling is not accurate enough for cooling the heat source GPU. Long-term operation of the chip at high temperature will lead to reduced performance. There is a certain performance gap between the liquid-cooled version and the air-cooled version of the same performance server. According to the “ten-degree rule”, from room temperature, the failure rate of electronic components increases for every ten degrees. If doubled, the service life will also be reduced, and the failure rate of GPU spare parts will increase, which will in turn lead to an increase in computing power costs during the entire life cycle.

In practice, it often happens that the channel temperature is low but the chip temperature is high. Long-term high-temperature operation results in short life and low performance of the GPU, resulting in increased economic costs and time costs. It can be seen that in computing power scenarios, air cooling is now The stage is not appropriate. Liquid cooling directly removes heat through cold liquid with high specific heat capacity. This heat dissipation method is gradually entering everyone’s field of vision.

2.Introduction to high heat density intelligent liquid cooling water chiller

The basic principle of liquid cooling of high thermal density intelligent liquid cooling water cooler is to use liquid as a heat transfer medium to flow in the internal flow channel of the cold plate, and to achieve cooling of the heat source through heat transfer. It is a non-contact liquid cooling technology. In the cold plate liquid cooling system, a dedicated liquid cooling server is required. Heat-generating devices such as server chips do not directly contact the liquid. Instead, heat is dissipated through a cold plate assembled on the electronic components that need to be cooled to achieve the purpose of cooling and allow the GPU to cool. Runs cooler.
The secondary side of the high thermal density intelligent liquid-cooling water cooler uses a mixture of ethylene glycol and deionized water to ensure heat exchange while taking into account safety and stability. The system cools down the chip through natural cooling and reduces system PUE. The primary side and the secondary side realize heat exchange through plate exchange, and the water pump on the secondary side takes the heat out of the plate exchange to the cooling tower for dissipation.

From the perspective of the entire system, high heat density intelligent liquid cooling water coolers are different from traditional refrigeration methods. They have higher heat exchange efficiency and are more friendly to the GPU. Compared with traditional air flow exchange methods, cold plate liquid cooling can improve heat dissipation efficiency.

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