A Comparative Analysis of Evaporative Heat Transfer Effect in Nucleate Pool Boiling Process on Copper Substrate

Nuclear pool boiling has been the primary focus for research in heat transfer arena and has drawn the attention of many research scholars. Invoking the recent theories of bubble and vapour mass growth on heating surface in nucleate pool boiling postulated the formation of thin liquid layers between the solid surface and the growing vapour. The high rates of heat transfer in boiling occurs owing to the transient heat conduction through the thin layer in presence of high temperature differential across it. In this paper, the mechanism of formation of these layers and their effect on heat transfer by nucleate boiling process is analysed. In order to understand this phenomenon, existing studies on nucleate boiling heat transfer, as well as characteristics of boiling phenomena such as bubble departure diameter, microlayer as well as macrolayer formation, bubble departure frequency, and their impact on pool boiling heat transfer is analysed and result are validated by invoking the previous research works. The comparison of results of former exploration done till date with the experimental results shows that this model can be considered capable of fairly accurate predictions regarding heat transfer during the nuclear boiling process.