Review on Passive Heat Enhancement Techniques in Pool Boiling Heat Transfer

Abstract

Abstract Improvement of pool boiling heat transfer is deeply connected to heat enhancement methods for several years. Nevertheless, the developing progress and ideas in this field make it more intensified with the recently applied methods for enhancing the CHF and HTC. This paper gives a critical analysis and thorough investigative study in the literature discussing the passive heat enhancement techniques in the pool boiling heat transfer. Heat improvement consequence within the pool boiling mainly depends on thermo-physical features of material & the working fluid, modification of surface techniques (pin-fins treated, roughness, extended, artificial cavities pattern, micro-channels), thin-film (nano-scale, micro-scale, macro-scale surfaces, and hybrid scale), coating method, working fluid (water or refrigerants) and additives for fluids. The current status of these passive heat enhancement methods for pool boiling heat transfer with various kinds, improvement potentials, future challenges, surface modification techniques, and their potential industrial and technical applications are also examined in this work.