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CDU Liquid Cooling Data Center

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CDU Liquid Cooling Data Center

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Server computing power is growing rapidly, and the construction of large-scale data centers with high density and high energy consumption has become a necessary choice to balance computing power and environmental protection regulations. Currently, air conditioners used for server cooling have become a key factor in determining the PUE of data centers because their energy load is higher than that of IT equipment.

The refrigeration system is one of the important infrastructures of the data center. During the operation of high-density data centers, traditional air cooling faces problems of insufficient heat dissipation and serious energy consumption. Liquid cooling technology has become an optimal solution to reduce the PUE of the data center, which is above 15kW/cabinet. more economical advantages.

At present, liquid cooling technology has gradually been adopted in ultra-large data centers with high density and high power supply density around the world. Liquid cooling technology is to directly introduce the liquid cooling system into the server for heat dissipation, or even put the server and other equipment that need heat dissipation directly into the coolant (transmission media such as mineral oil or fluorinated liquid).

The heat is transferred through the liquid-cooled host and then dissipated into the air through the outdoor cooling tower. Since the specific heat capacity of liquid is much larger than that of air, the cooling efficiency is much higher than that of air cooling, and since the fan is omitted, the noise can also be reduced. The server thus achieves high density, low noise, low heat transfer temperature difference, and natural cooling throughout the year.

As the construction pace of ultra-high-density data centers accelerates, traditional air cooling can no longer meet the needs of high cost performance and low PUE. Therefore, liquid cooling technology has become the main path for building data centers in the future. Air cooling refers to a heat dissipation method that transfers the heat emitted by the server motherboard, CPU, etc. to the radiator module through the radiator, and then uses a fan or air conditioner to blow the heat away.

In recent years, heat dissipation solutions have evolved from traditional external computer room air conditioners to AHUs with natural cooling on the direct air side, and then to AHUs with natural cooling on the indirect air side. Technical innovations in air cooling systems continue to emerge, among which Baidu Yangquan is a typical example. Cloud computing center, etc. However, air cooling is still limited to using air as the refrigerant. The heat conduction process of air cooling is complex, the total thermal resistance is large, the heat transfer efficiency is low, and the temperature difference between high and low temperature heat sources is large during the heat exchange process. A lower outdoor low-temperature heat source is needed to guide the heat exchange process. conduct.

The CPU core temperature of liquid-cooled servers can be 20~30°C lower than the extreme temperature of air cooling, and the reliability will be greatly improved. Liquid-cooled servers do not require compressor cooling, which reduces the PUE value of the entire system to less than 1.2 throughout the year. At the same time, the server CPU can be overclocked and computing performance can be improved by 12%.

Cold plate liquid cooling has the highest maturity, and immersion liquid cooling and spray liquid cooling have better energy-saving effects.

Currently, three different liquid cooling solutions each have some application cases in the communications industry.

Among them, cold plate liquid cooling heating devices do not need to come into contact with coolant. They are the earliest in development and have high technological maturity. Cold plate liquid cooling uses micro-channel enhanced heat exchange technology and has extremely high heat dissipation performance. It is used in military radars and high-density data centers. , high-performance computers, power batteries and high-power LED heat dissipation fields. It is an effective application solution to solve the deployment of high-power consumption equipment, improve energy efficiency, reduce refrigeration operating costs, and reduce TCO.

Immersion and spray liquid cooling achieve 100% liquid cooling and have better energy-saving effects; immersion liquid cooling has obvious advantages in heat dissipation and energy saving, and has been widely used in the fields of supercomputing and high-performance computing.


Model ZLFQ-15 ZLFQ-25 ZLFQ-50 ZLFQ-75 ZLFQ-100 ZLFQ-150
Temp range  +5℃~35℃ +5℃~35℃ +5℃~35℃ +5℃~35℃ +5℃~35℃ +5℃~35℃
Cooling water 5℃~30℃ Adopt Siemens/Honeywell regulating valve to control cooling water flow
Temperature control accuracy ±0.2℃ ±0.5℃ ±0.5℃ ±0.5℃ ±0.5℃ ±0.5℃
flow control 10~25L/min 25~50L/min 40~110L/min 70~150L/min 150~250L/min 200~400L/min
The flow control is adjusted by frequency converter, the accuracy is ±0.3L/min
Cooling capacity (MAX) 15kW 25kW 50kW 75kW 100kW 150kW
Storage volume 15L 30L 60L 100L 150L 200L
Brine Water, silicone oil, fluorinated liquid, ethylene glycol aqueous solution, etc.
Medium pipeline SUS304 SUS304 SUS304 SUS304 SUS304 SUS304
In and out interface size G3/4 G1 G1 DN32 DN40 DN50
Cooling water interface G3/4 G1 DN40 DN50 DN50 DN65
Cooling water flow 7~20℃ 2.5m³/h 4m³/h 8m³/h 13m³/h 17m³/h 25m³/h
380V 50HZ  1kW 1.5kW 3kW 4kW 5kW 6kW
shell Cold-rolled sheet spray RAL7035


Model ZLFQ-200 ZLFQ-250 ZLFQ-300 ZLFQ-400 ZLFQ-500
Temp range  +5℃~35℃
Temp accuracy ±0.5℃
Flow control 15~30m³/h 20~35m³/h 25~40m³/h 30~60m³/h 40~70m³/h
Cooling capacity(MAX)  200kW 250kW 300kW 400kW 500kW
Storage volume 250L 300L 600L 1000L 1200L
Medium Water, silicone oil, fluorinated liquid, ethylene glycol aqueous solution, etc.
Medium pipeline SUS304
In and out interface size DN65 DN65 DN65 DN80 DN80
Cooling water interface DN80 DN80 DN100 DN100 DN125
Cooling water flow 7~20℃ 34m³/h 43m³/h 51m³/h 69m³/h 86m³/h
Power supply 380V 50HZ 7kW 7kW 8kW 9kW 13kW
shell Cold-rolled sheet spray RAL7035


CDU Liquid Cooling Data Center


We provide complete temperature control system design and manufacturing. From standard models to complete customized products up to 1000 tons. We specialize in customer service and are dedicated to helping each customer have the optimal temperature control system for their specific need.

We provide non-standard customized solutions. 


Email:    WeChat ID: +8615251628237    WhatsApp: +86 17851209193



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