Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 03, 2023 - September 06, 2023
Recently, it is necessary to develop technologies for utilizing waste heat, due to problems of global warming and depletion of fossil fuels. Therefore, a new engine with the Leidenfrost phenomenon have been developed in our laboratory. In this study, we investigated how the evaporation time of droplets, especially neat the Leidenfrost point, changes when different amounts of D.I. water or methanol are dropped. D.I. water and methanol have different Leidenfrost points, different behaviors when the volume is changed, and a difference trend of the change of the evaporation time in the temperature range lower than the Leidenfrost point. From the results considering with our knowledge, it is suggested that the difference in vapor film thickness at the target temperature with reference to the boiling point causes such a difference.
