Abstract
In the present study, we measured liquid phase temperature field during pool boiling with the laser interferometry, and tried to directly evaluate the heat transfer from the liquid to the bubble. The MEMS thermal sensor which can control the bubble generation was used as the heating surface, and the thermal field around the isolated bubble without bubble-bubble interaction was measured. The interferometric method successfully visualized macroscopic thermal field in the liquid phase such as swell of the thermal boundary layer with the bubble growth and the hot wake accompanied by the rising bubble. However the temperature gradient driving the evaporative heat transfer in the vicinity of the interface was not able to be measured due to shortage of the spatial resolution. Two-dimensional thermal fluid analysis demonstrated that the improvement in resolution by one order of magnitude will be required in the future work.
