Currently, more and more data center servers are using liquid cooling technology for heat dissipation. In the application of liquid cooling technology, the water pump is a key component. Typically, the liquid cooling water pump is installed in the main machine room of the data center's liquid cooling system and delivers water to the cooling equipment in the server racks through pipes. In the server racks, the liquid cooling water pump is connected to the heat exchangers via piping, circulating the heated water back to the main liquid cooling system room to complete the heat transfer and dissipation process. The importance of the liquid cooling water pump is self-evident. The cooling performance and stability of the liquid cooling system are directly related to the performance of the pump. If the performance of the liquid cooling water pump is poor, it may lead to inadequate cooling, and even affect the normal operation of the servers. At the same time, the stability of the liquid cooling water pump is also crucial. If the pump fails, it may cause serious impacts on the normal operation of the data center.
The application of pumps in data center liquid cooling systems.
Cold plate liquid cooling system：
In cold plate liquid cooling systems, pumps are mainly used in the CDU (Cooling Distribution Unit) or rack CDU and the subsequent heat exchangers.
The pump in the CDU is responsible for driving the coolant circulation, maintaining the required flow rate and pressure, and ensuring that heat is transferred from the IT equipment to the external cooling system. At the same time, it enhances system reliability and energy efficiency through redundancy and intelligent control. The pump plays the "heart" role in the CDU, directly determining the cooling capacity, stability, and energy efficiency of the liquid cooling system. Its design must be highly compatible with the properties of the coolant, piping layout, and heat load requirements, while incorporating intelligent control and redundancy mechanisms to ensure the safe and low-carbon operation of the data center.
Liquid cooling server rack CDU pump
Rear door heat exchanger pump
Submerged liquid cooling system:
In immersion liquid cooling systems, the pump is typically integrated within the CDU to simplify the system structure and enhance reliability. External pumps are used in scenarios with ultra-high flow rates, special media, or redundancy requirements, such as in bitcoin mining immersion cooling. The actual pump selection needs to be comprehensively evaluated based on heat load, coolant type, and operation and maintenance strategies.
Submerged liquid cooling CUD pump
