An overview of heat transfer enhancement literature in 2019

Advances in modern technology with increasing power density call for new technologies of heat transfer enhancement. This article briefly reviews archival journal literature on enhanced heat transfer research and development published in 2019 in the English language. Since a large number of articles were published, the selected studies are focused and grouped into conduction, convection, radiation, phase-change materials energy storage, and high-performance heat exchange devices. The methodologies for enhancing convective heat transfer are further categorized into passive, active, and compound techniques. The review on heat conduction focuses on the micro/nanoscale aspects, interfaces and high-conductivity carbon materials. The emphasis of thermal radiation is on near-field radiation, solar energy, and metamaterial. Recent progress in applying machine learning to enhanced heat transfer research in nanofluids, solar energy, and heat exchangers is also discussed.