Investigation of Boiling Heat Transfer and Critical Heat Flux Enhancement for SiC and Graphene Layers on ITO Surfaces

Abstract

This paper presents a study on the enhancement in the boiling heat transfer (BHT) and critical heat flux (CHF) with a bare indium tin oxide (ITO) surface, few-graphene layer deposited on an ITO surface, and silicon carbide (SiC) particles deposited on an ITO surface. The experiment was conducted in atmospheric pressure using FC-72 refrigerant at saturation. Infrared (IR) thermometry was used to determine the temperature fields of the heater surfaces and CHF. The values of CHF for the graphene layer on the ITO surface and SiC deposited on the ITO heater were increased by 9% and 42%, compared to the bare ITO heater, respectively. All the heater surfaces showed hydrophilic condition with the working fluid (FC-72 refrigerant). The enhancement in the BHT coefficient and CHF was attributed to surface modifications such as the formation of microporous structures and the material properties.