How CDUs Support Data Center Liquid Cooling

Date:2026-10-21

Introduction

As data centers continue to adopt high-density computing infrastructure, effective thermal management has become increasingly important. AI servers, high-performance computing (HPC) systems, and other power-intensive equipment generate substantial heat, placing greater demands on traditional air-cooling methods. Liquid cooling offers an effective approach to managing these thermal loads, while a reliable coolant distribution system plays an essential role in maintaining stable operation.

SHENGLIN provides cooling solutions for data center infrastructure, including Coolant Distribution Units (CDUs) designed to support liquid cooling systems. The cabinet-type CDU integrates key components into a structured enclosure, providing a centralized unit for coolant circulation, distribution, and system management according to the project configuration.

 

 

What Is a Coolant Distribution Unit?

A Coolant Distribution Unit is a key component in liquid-cooled data center systems. It manages the circulation and distribution of coolant between the facility cooling infrastructure and IT equipment, helping maintain appropriate operating conditions for servers and other high-density computing devices.

Depending on the system design, a CDU may incorporate heat exchangers, pumps, filtration components, monitoring instruments, and control systems. These components work together to regulate coolant flow and facilitate heat transfer from IT equipment to the facility cooling loop.

For liquid-to-liquid configurations, the CDU transfers heat between the technology cooling circuit and the facility water circuit through a heat exchanger, while keeping the two fluid circuits separate. The specific configuration depends on the cooling architecture and project requirements.

 

Key Features of SHENGLIN CDU Solutions

1. Integrated Cabinet Design

The cabinet-type structure brings major system components together in an organized enclosure. This design supports equipment integration, simplifies installation planning, and provides a clear arrangement for operation and maintenance.

2. Coolant Circulation and Distribution

A properly configured CDU helps deliver coolant to connected cooling loops at the required flow conditions. Stable circulation and effective distribution are important for supporting the thermal management requirements of high-density server racks.

3. Heat Transfer Management

In liquid-to-liquid systems, the CDU facilitates heat transfer between the IT equipment cooling loop and the facility cooling loop. This arrangement helps isolate the two circuits and supports coordinated operation between data center equipment and the building cooling infrastructure.

4. System Monitoring and Control

Monitoring and control functions can help operators track operating conditions and manage system performance. Depending on the selected configuration, relevant parameters may include coolant temperature, pressure, flow rate, and equipment status.

5. Adaptability to Data Center Requirements

CDU configurations can be selected according to cooling capacity, coolant requirements, rack density, and the overall cooling architecture. Careful system planning helps ensure compatibility with the wider data center infrastructure.

 

Applications in Modern Data Centers

CDUs are increasingly relevant to facilities deploying AI computing, HPC clusters, and other high-density IT equipment. As processor power consumption and rack heat loads increase, liquid cooling can help address thermal demands that are difficult to manage through air cooling alone.

By supporting controlled coolant circulation and heat transfer, a properly designed CDU can form an important part of a coordinated data center cooling solution. Its performance depends on appropriate sizing, compatible system components, correct installation, and effective commissioning.

 

Conclusion

Reliable coolant distribution is an important consideration in the development of modern liquid-cooled data centers. With its cabinet-type design and configurable system architecture, the SHENGLIN CDU provides a practical equipment option for projects requiring organized coolant management and integration with data center cooling infrastructure.

SHENGLIN remains focused on providing cooling equipment and solutions tailored to different project requirements, helping customers build dependable thermal management systems for evolving data center applications.