Ultra-high heat flux dissipation with Piranha Pin Fins

The present work reports on flow boiling experiments performed to characterize system-level performance of the MECH-X heat sink at mass fluxes of 680, 1440, and 3350 kg/s/m2. HFE7000 was used as a coolant at ambient lab temperature (∼23 °C) and a system pressure of 377 kPa. A 3.95 mm2 heating element, which simulated a heat generating component, was maintained below 95 °C with heats loads exceeding 1 kW/cm2. Experiments were terminated at this heat flux due to saturating a 50 VDC laboratory power supply. Results are also presented at a system pressure of 239 kPa, and results are compared to first generation PPF heat sinks.