Coolant Distribution Unit (CDU)
For Data Center Cooling
A coolant distribution unit does what it sounds like, it just pumps liquid at the desired temperature directly to the chip or server. This can be seen as a middleman in the IT cooling infrastructure.
A Coolant Distribution Unit (CDU)/chiller that will be placed between the data center cooling system and the heat rejection unit, with a circulation pump to drive the coolant circulation and heat exchange. The principle is that a reservoir is a container that stores excess process fluid, from which a pump draws fluid, and from which a heat exchanger discharges fluid. A temperature sensor senses the temperature of the process loop and sends a signal to the controller. Controllers are electrical devices that control the function of pumps, temperature sensors, and regulating valves. The CDU is attached and mounted to a semi-custom cabinet.
CDUs are divided into the following categories:
Liquid to Liquid CDU: Best Cooling Performance of All Types
Liquid to Gas CDU: Limited cooling capacity in comparison, but requires no water piping and is easier to install
Closed-loop liquid-cooled CDU
The coolant distribution unit of our LNEYA can be said to be a liquid-to-liquid type, which greatly reduces the ratio of high loss of coolant in the past, and has high safety and reliability.
CDU will become the mainstream thermal solution in the data center. In general, cooling systems with radiators, fans, air conditioning units, etc. are considered insufficient for CPUs over 300W. To continue normal operation of the 300-1000W high-power CPU and improve computing and processing efficiency, it is necessary to properly handle the heat through the CDU.
High cooling performance is not the only advantage of the CDU: Compared with air-cooled units, its major advantage is that it consumes less power and has less loss of liquid cooling media.
The customer is required to provide parameters such as heat dissipation and volume, and the required equipment power can be calculated based on the formula.
Cold Plate Liquid Cooling CDU-15kW
Used for the renovation of small and medium-sized old data computer rooms.
- Fengliu structure
- Heat dissipation up to 12kW
- PUE≤1.2
- Plug-in frame design
- Hot and cold aisle isolation
Cabinet-type liquid cooling CDU-300kW
Used in data center micro-modules liquid cooling.
- Annual PUE<1.2
- Heat dissipation 300kW
- 42U cabinet design
- Water pump frequency conversion operation
CDU working principle
The cooling water enters the unit, exchanges heat with the heat transfer medium, takes away the heat of the heat transfer medium, and reaches the intended temperature. It can be automatically adjusted by frequency conversion according to system pressure, temperature and flow.
The main heat source is cooled by liquid-cooled heat exchange, reducing the use of air-cooled systems. The cooling liquid circulation is provided for the heating element through the liquid cooling equipment, which saves the air heat exchange link and saves a lot of energy consumption of the refrigeration system.
Cooling methods for data center coolant distribution units:
- Liquid cold plate heat exchange
- Liquid-liquid cycle
CDU-15kW
Air-cooled liquid-cooling cold plate chiller
The heat dissipation is as high as 15kW, which can quickly complete the construction of edge computer rooms and the transformation of old computer rooms. Annual OUE≤1.2, heat exchange increased by 10%.
CDU-300kW
Liquid Cooling – Liquid Cooling Integrated System
The heat dissipation reaches 300kW, which can realize the natural heat dissipation of server equipment. It has an independent heat exchange system, power supply system and monitoring system, and can be used in data center micromodules.
CDU parameter
ZLFQ series Temperature accuracy ±0.2℃
Model | ZLFQ-15 | ZLFQ-25 | ZLFQ-50 | ZLFQ-75 | ZLFQ-100 | ZLFQ-150 | |||||
Temp Range | Cooling Water Temperature+5℃~35℃ | ||||||||||
Cooling Water | 5℃~30℃ Adopt Siemens/Honeywell regulating valve to control cooling water flow | ||||||||||
Temp Control Accuracy | ±0.2℃ | ±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 precision ±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. | ||||||||||
Controller | PLC, fuzzy PID control algorithm, with cascade control algorithm | ||||||||||
Temp Control | Heat transfer medium outlet temperature control mode, with cascade control algorithm | ||||||||||
Letter of agreement | Ethernet interface TCP/IP protocol RS485 interface modbus RTU protocol | ||||||||||
Device Internal Temperature Feedback | Equipment heat transfer medium outlet temperature, medium inlet temperature, cooling water temperature | ||||||||||
Tank Level | Import and export pressure sensor detection, cooling water pressure detection | ||||||||||
Medium Pipeline | SUS304 | ||||||||||
Heat Exchanger | Plate heat exchanger, special attention: need to use clean factory water | ||||||||||
Operation Panel | LNEYA customized 7-inch color touch screen, temperature curve display\EXCEL data export | ||||||||||
Security | With self-diagnosis function; phase sequence and phase failure protector; pressure protection, overload relay, thermal protection device and other safety protection functions. | ||||||||||
In and out interface size | G3/4 | G1 | G1 | DN32 | DN40 | DN50 | |||||
Cooling water interface | G3/4 | G1 | DN40 | DN50 | DN50 | DN65 | |||||
Cooling Method | Water-cooled, the factory water temperature is lower than the minimum temperature provided by the equipment by more than 3°C, and the water temperature fluctuation is ≤3°C | ||||||||||
Cooling Water Flow 7~20℃ | 2.5m³/h | 4m³/h | 8m³/h | 13m³/h | 17m³/h | 25m³/h | |||||
Power 380V 50HZ | 1kW | 1.5kW | 3kW | 4kW | 5kW | 6kW | |||||
Shell Material | Cold-rolled sheet spray RAL7035 |
ZLFQ series Temperature accuracy ±0.5℃
Model | ZLFQ-200 | ZLFQ-250 | ZLFQ-300 | ZLFQ-400 | ZLFQ-500 |
Temp Range | Cooling Water Temperature+5℃~35℃ | ||||
Temp Control Accuracy | ±0.5℃ | ||||
Flow Control | 15~30m³/h | 20~35m³/h | 25~40m³/h | 30~60m³/h | 40~70m³/h |
Flow control is adjusted by frequency converter | |||||
Cooling Capacity(MAX) | 200kW | 250kW | 300kW | 400kW | 500kW |
Storage Volume | 250L | 300L | 600L | 1000L | 1200L |
Cooling Method | Heat exchange between factory service water and brine, and brine provides cooling capacity for heating equipment | ||||
Brine | Water, silicone oil, fluorinated liquid, ethylene glycol aqueous solution, etc. | ||||
Controller | PLC, fuzzy PID control algorithm, with cascade control algorithm | ||||
Temp Control | Heat transfer medium outlet temperature control mode | ||||
Letter of agreement | Ethernet interface TCP/IP protocol RS485 interface modbus RTU protocol | ||||
Device Internal Temperature Feedback | Equipment heat transfer medium outlet temperature, medium inlet temperature, cooling water temperature | ||||
Tank Level | Pressure sensor real-time monitoring | ||||
Medium Pipeline | SUS304 | ||||
System Pressure | Using the pressure sensor to detect and display on the touch screen | ||||
Heat Exchanger | Plate heat exchanger, special attention: need to use clean factory water | ||||
Operation Panel | LNEYA customized 7-inch color touch screen, temperature curve display\EXCEL data export | ||||
Security | With self-diagnosis function; phase sequence and phase failure protector; pressure protection, overload relay, thermal protection device and other safety protection functions. | ||||
In and out interface size | DN65 | DN65 | DN65 | DN80 | DN80 |
Cooling water interface | DN80 | DN80 | DN100 | DN100 | DN125 |
Cooling Method | Water-cooled, the factory water temperature is lower than the minimum temperature provided by the equipment by more than 3°C, and the water temperature fluctuation is ≤3°C | ||||
Cooling Water Flow 7~20℃ | 34m³/h | 43m³/h | 51m³/h | 69m³/h | 86m³/h |
Power 380V 50HZ | 7kW | 7kW | 8kW | 9kW | 13kW |
Shell Material | Cold-rolled sheet spray RAL7035 |
Mainly Used For:
- High-performance computing Center
- Managed Data Center
- Telecommunications/Mobile
- Semiconductor
- Enterprise Data Center
- Universities
Easy Maintenance
Valve components are mostly split type, which is easy to disassemble and replace.
Efficient & Reliable
Direct liquid cooling of the device reduces the server’s operating temperature and extends its life.
Safe & Reliable
Supports dual power supply configuration, improving power supply stability.
Attentive service
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