Nanotech 2011

Hydrophobic patterning to enhance pool boiling

A. Betz, J. Xu, H. Qiu, D. Attinger
Columbia University, US

Keywords: microfluidics, heat transfer, boiling, hydrophobic


In this work we investigate the heat transfer performance of surfaces patterned with hydrophobic islands 50 to 200 microns in diameter. The performance was characterized in a pool boiling experiment with water as the working fluid. Compared to a plain hydrophilic surface the patterned surfaces double the heat transfer coefficient and increase the critical heat flux by 50 percent.

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