Review on Passive Heat Enhancement Techniques in Pool Boiling Heat Transfer

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.

Speleothem-Inspired Copper/Nickel Interfaces for Enhanced Liquid–Vapor Transport by Marangoni and Soret Effects

“…These factors play a critical role in macroscopic heat transfer . Furthermore, the use of surfactants or particles to reduce liquid surface tension has been effective in enhancing the heat transfer rate. − Inspired by the highly efficient thermal properties observed in biological systems, researchers are exploring the potential of biomimetic design principles to drive innovation in the field of thermal material engineering. Nature has evolved intricate surface modifications, such as the hierarchical structures found on the leaves of Ruellia or the surfaces of Tobacco mosaic virus, which exhibit remarkable thermal and hydrophilic characteristics.…”

Experimental Investigation of Pool BHT Performance of R-141b on Micro/Nano-Porous Copper Coating Prepared by a Two-stage Electrodeposition Method

“…Pool boiling heat transfer (BHT) has been widely in various scientific and technological applications since it was put forward, such as heat pump, heat exchangers, nuclear reactors, electronic cooling, refrigeration, spacecraft avionics and cryogenic system [1][2][3][4][5][6][7][8]. Surface and working fluid modification techniques have been exploited to improve pool boiling performance [9][10][11][12][13]. Various modification techniques used to develop heating surfaces are suitable in pool BHT applications such as RF sputtering, electrodeposition, sintering, soldering, spray painting, binding, microporous coatings and dip coating [14][15][16][17][18][19][20].…”