Flow boiling of HFE 7000 on micro pin fins entrenched inside microchannels was experimentally studied for G = 350 kg/m2s to G = 827 kg/m2s and wall heat fluxes from 10 W/cm2 to 110 W/cm2. Bubbly, multiple, and wavy-annular flow patterns were observed. The interaction of the bubble with the pin fins during nucleate boiling is detailed.

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