Liquid Cooling Becomes Core Infrastructure for AIEra Computing Facilities

From 6-8kW to 100kW Racks: UCloud's Roadmap for Making Liquid Cooling the AI-Era Standard

At TechWeek Shanghai's Liquid Cooling 2.0 forum, UCloud architect Xu Zhiyu shared how liquid cooling has become critical infrastructure for AI-era computing, as GPU chip power of 700-1400W pushes rack density from traditional 6-8kW toward 50-100kW-plus, beyond air cooling's 15-30kW physical limit and PUE 1.45 ceiling, while national policies require PUE below 1.25 for new builds. Cold plate solutions dominate commercial deployment with strong server compatibility, while phase-change immersion can push PUE below 1.08. Three trends emerge: on-chip microchannels, maturing domestic supply chains, and data centers becoming energy hubs supplying 40-60°C hot water. EXTRCOOL provides one-stop liquid cooling solutions.

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EXTRCOOL INDUSTRY LIMITED

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The CDU, the Heart and Brain Liquid Cooling Cannot Do Without

Silent When Healthy, Fatal When Failing: The Five Selection Questions That Decide Whether the CDU Holds the Loop Together

The CDU plays the role the heart plays: it produces no cold, but without it the coolant never moves. Its heart role pumps and distributes via the manifold, while its brain role senses and controls. Selection answers five questions: total flow above all cold plate minimums, head above maximum loop resistance, exchanger capacity above peak load with fouling margin, redunda...

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The Manifold That Decides Where the Coolant Goes

From CDU to Cold Plate and Back: How the Manifold's Flow Distribution, Not Total Flow, Decides Precision Cooling

Rising AI GPU power is moving liquid cooling from whether it can cool to cooling precisely, and the manifold decides whether coolant reaches every position as it should. It distributes coolant through main channels to parallel branches and collects the heated return, following CDU to supply manifold to cold plate to return manifold to CDU. Poor design lets near-end branc...

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How a Liquid Cooling Manifold Gets Made, from Material to Final Acceptance

316L to Helium Testing: The Four Links—Material, Machining, Cleanliness and Verification—That Decide Manifold Quality

Manifold manufacturing starts with material, and 316L is the safer default, with coolant compatibility outweighing thermal conductivity. CNC machining forms main channels, branches and interface holes, where holding channel positions matters more than drilling; one-piece machining avoids weld deformation, while tube and plate assemblies add laser, TIG or brazing. Deburri...

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