#Industry News
In-depth Analysis of CDU Core Structure & Operation Logic for Data Center Liquid Cooling
Six Modules From Heat Exchanger to Filtration: The CDU Anatomy That Keeps 200kW Racks Stable
This article systematically dismantles the CDU's six core modules for reliable liquid cooling deployment, where the CDU serves as the critical intermediate hub linking primary chilled water loops and secondary server cold plate circuits, covering 8-20 racks per unit in 30kW to 200kW power grades. The plate heat exchanger with stacked corrugated metal plates achieves 93%-97% heat transfer efficiency; redundant pump groups with 1+1 or 2+1 standby complete automatic switching within 5 seconds; electric regulating valves under PLC control stabilize supply temperature within ±0.5℃ with fail-open design for power failures; nitrogen-precharged diaphragm expansion tanks compensate volume fluctuations at 5%-10% of system volume; and dual-stage filtration at 50μm coarse and 20μm fine protects micro-channel cold plates. EXTRCOOL provides one-stop liquid cooling solutions.
