Dynamics of an Isolated Vapor Bubble in Saturated Nucleate Boiling : Part 3, Effect of Thermal Factors of a Heater

Abstract

One-dimensional model analysis was made to investigate the effect of thermal factors of a heater upon the evaporation rate of a microlayer beneath the bubble. The evaporation rate was found to be markedly influenced by thermal factors such as heat capacity and thermal diffusivity of a heater. Quantitative analysis was also made about the corresponding behaviors of temperature and heat flux on the heater surface. The effect of heat capacity was really found by a careful inspection of the experimental data, which showed a considerable decrease of the bubble growth rate with a decreasing heat capacity. The thermal factors of a heater were found to influence the bubble growth rate through the mechanism of a microlayer evaporation.