Subcooled pool boiling using the surface with a hydrophobic coating

Abstract

A next-generation electric vehicle requires a high-performance IC inverter with the thermal emission of more than 500 W/cm² . To remove such a high heat emission, boiling heat transfer with microbubble emission boiling (MEB) is expected to be an advanced cooling technology because MEB can improve the maximum heat flux. On the other hand, the wall super heat in MEB is higher than that in CHF. In this study, we investigated the characteristics of MEB with and without a hydrophobic coating. As a result, the wall super heat with the hydrophobic coating in MEB was lower than that without the coating.