Fixed vs. Adaptive Flow Control in Two-Phase AI Cooling Systems

In direct-to-chip pumped two-phase liquid cooling systems, stable refrigerant flow is critical to achieving consistent cooling performance.

As chip power increases, refrigerant absorbs more heat within the cold plate, driving boiling and changing pressure conditions throughout the cooling loop. In systems that rely on a fixed restriction to meter flow, these pressure fluctuations can reduce refrigerant flow when cooling demand is highest, impacting thermal stability and overall system performance.

Our Flow Regulating Valve is designed to break the link between pressure variation and flow rate. By automatically compensating for changing system pressures, it helps maintain a controlled flow rate to each device, supporting balanced cooling and reliable performance across high density AI systems.

Watch the animation to see how stable flow helps supports consistent cooling performance as operating conditions change. In this video, you’ll learn:

• How boiling within the cold plate influences pressure and refrigerant flow
• Why fixed restrictions can reduce flow during periods of peak cooling demand
• How the Flow Regulating Valve maintains a consistent flow rate despite changing pressures
• How flow stability supports reliable thermal performance and helps reduce throttling risk