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8th Thermal and Fluids Engineering Conference (TFEC)
March, 26-29, 2023, College Park, MD, USA

ANTI-ICING PERFORMANCE OF A SUPERHYDROPHOBIC AND ELECTROTHERMAL COATING ON METALLIC SUBSTRATES

Get access (open in a dialog) pages 1395-1398
DOI: 10.1615/TFEC2023.fnd.045657

要約

This paper reports recent experimental results demonstrating the performance of a hybrid anti-icing coating consisting of an electric heating film and a superhydrophobic top layer. The coating materials are applied to a 17-4 PH stainless steel substrate by a sequential spray process. Water droplets on the SiO2-PDMS superhydrophobic coating show an average static contact angle of 164° with a low hysteresis of 3°. The Ag-Cu epoxy heating film shows a fast thermal response with excellent thermal stability at temperatures up to 100°C. The anti-icing properties of the hybrid coating were tested in a cold chamber at -20° with water spray. Water droplets slide off the superhydrophobic surface before freezing, reducing the ice accretion area, and facilitating easier ice removal. Nearly complete anti-icing of the hybrid coating was achieved with a heating power density of 0.44 W/cm2. The superhydrophobic top layer helps reduce the energy consumption for anti-icing. The preliminary results demonstrated the effectiveness and energy-saving benefits of the hybrid coating.