What Is Secondary Fluid Network?_
In a liquid-cooled data center, the secondary fluid network is the intermediate loop between the facility’s primary water supply and the server-level cooling components. It typically uses a dielectric or treated water-based coolant that circulates through the rack’s CDU, then through hoses or hard piping to the GPU cold plates. This network isolates the sensitive electronics from the facility’s primary water loop, reducing contamination and corrosion risks.
Technical Details
The secondary loop operates at lower pressures than the primary facility loop, with flow rates and temperatures set per the OEM’s specifications for the specific GPU node. Connections use quick-disconnect fittings with shutoff valves to allow hot-swap of server trays without draining the entire rack. The coolant in this loop is typically non-conductive and may include corrosion inhibitors, with filtration to protect microchannel cold plates. Pressure and temperature sensors at the CDU and rack manifolds monitor for leaks or flow imbalances.
How Leviathan Systems Works with Secondary Fluid Network
During Leviathan Systems field deployments, we install and pressure-test the secondary fluid network hoses from the CDU to each GPU tray, verifying flow direction and securing quick-disconnects per the rack layout. We also label each line to match the CDU port mapping, ensuring no cross-connections during commissioning.
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