Fluid Chemistry and Filtration
Why does water chemistry matter?
Because the water tunnels inside a cold plate are thinner than a hair (200–300 um), a single tiny speck of metal dust (> 50 um) will clog the plate and fry the AI chip. Worse, because the loop mixes copper plates with stainless steel pipes, impure water (> 25 uS/cm conductivity) triggers violent galvanic corrosion that eats through the metal.
The Big Takeaway: Under intense 120 kW+ heat, cooling fluid goes bad 2 to 3 times faster than normal and must be lab-tested every 6 months. This creates a lucrative, recurring business opportunity for local SEA firms to build < 50 um filter skids and offer 6-month fluid maintenance contracts.
1. Mandatory Purity & Filtration Thresholds
-
Ideal Electrical Conductivity: 5 to 10 microS/cm.
-
Alarm Threshold: 20 microS/cm.
-
Hard Replacement Ceiling: 25 microS/cm (mandatory immediate fluid replacement).
-
Particulate Filtration: Sub-50 micrometer filtration required continuously.
-
Standards Compliance: ASHRAE W55 and W45 water quality standards; ASHRAE H1 class guidelines; Approved Wetted Materials List (WML).
2. Lifecycle Degradation
-
At 120 kW+ rack density, coolant degrades 2 to 3 times faster than in legacy deployments.
-
Requires mandatory fluid testing for reserve alkalinity and pH levels every 6 months.
3. Linked Market Entry Strategy
- Directly enables Pathway C - Localized Testing and Lifecycle Chemistry.
