Fabrication and Characterization of Paraffin-Based Slippery Liquid-Infused Porous Surfaces for Applications of Condensation Heat Transfer

Abstract

Phase change materials, such as paraffin waxes, have recently been introduced in surface science. Paraffin-based slippery liquid-infused porous surfaces (P-SLIPSs) provide switchable wettability and various adhesion states. Herein, P-SLIPSs were fabricated on copper plates. To study condensation heat transfer, two condensation rigs were fabricated and optimized via a comparison between the experimental and theoretical heat transfer coefficients, finding a good agreement in the short cold-finger-assisted rig. The condensation mode on P-SLIPSs is dropwise mode. Consequently, the condensation heat transfer coefficients on P-SLIPSs were found to be higher compared with that of pristine copper plates.

Keywords

• slippery surfaces
• condensation heat transfer
• paraffin waxes