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Immersion-energy Coolant Distribution Unit (CDU): The Secondary Loop Hub Enabling High-Density Liquid Cooling
Jul 24, 2026
Industry Background & Core Position
Against the backdrop of surging power density for AI servers and high-performance computing infrastructure, traditional air cooling gradually hits thermal bottlenecks. Liquid cooling has emerged as the viable path to stabilize hardware operating temperatures. Within a typical liquid cooling architecture, the Coolant Distribution Unit acts as the vital bridge between primary cold sources and rack-side cold plates, managing secondary-side fluid circulation, heat exchange and real-time monitoring. Poorly engineered CDUs easily trigger temperature fluctuation, coolant contamination and unplanned downtime.
Immersion-energy CDU integrates variable-frequency pumps, plate heat exchangers, sensors, filters and liquid replenishment modules as a unified secondary-side system. All assemblies are prefabricated, piped and fully tested at the factory. This cuts complicated on-site construction work, shortens project lead times and delivers plug-and-play thermal management for modern liquid-cooled data centers.
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Comprehensive Product Capabilities
Immersion-energy CDU supports cooling capacities ranging from 20kW to 1500kW, covering edge computing rooms, medium computer hubs and large-scale AI data centers. Equipped with a 10-inch touchscreen and multi-level access authority control, it prevents improper operation and ensures accurate system regulation. Its modular framework allows flexible capacity expansion to match gradually growing computing loads.
Optional redundant variable-frequency pumps and dual power supply improve system uptime. Pipeline components adopt grade 304 stainless steel and above for outstanding corrosion resistance and extended service life. The unit executes precise closed-loop control over secondary-side temperature, flow and differential pressure, together with anti-condensation protection. Optional sensors track coolant conductivity, turbidity, hardness and pH value to sustain consistent fluid quality throughout operation.
Designed with ultra-quiet long-life motors, the CDU offers filtration precision adjustable from 25μm to 100μm. It adopts standard Modbus TCP protocol, equipped with complete fault alarm protection and permanent parameter storage. Custom communication protocols can be developed to meet diverse BMS integration requirements.
Application Value & Industry Outlook
Immersion-energy high-performance CDU provides modular, intelligent and low-maintenance liquid cooling infrastructure. By stabilizing thermal conditions for high-density racks, it lowers risks of computing hardware thermal throttling and cuts long-term energy and maintenance expenses. As a foundational secondary-loop control device, it supports the rollout of energy-saving, green liquid cooling systems for global AI computing hubs and data center projects.
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