Delta-T
The temperature rise of coolant across a cold plate or heat exchanger; it sizes flow rate and the warm-water loop.
Current numbers
≤45 °C supply / ~65 °C return; <10 °C cold-plate ΔTGB200 NVL72 coolant inlet ceiling and cold-plate delta-T; deviation throttles GPUs up to ~50%
~7.5–12 °Ctarget coolant delta-T across the TCS; cold-plate pressure drop ~20–55 kPa depending on plate and flow (no vendor-published NVL72 figure)
7.5–12 °Ctarget design delta-T across the loop; ~1.2–2.0 L/min per kW at PG25