For acquiring the specific characteristics of solid metal, the solid material used for various heat exchangers or reactors is treated by heating and cooling process before forming. In the process of heat treatment, water at ambient temperature is used...
For acquiring the specific characteristics of solid metal, the solid material used for various heat exchangers or reactors is treated by heating and cooling process before forming. In the process of heat treatment, water at ambient temperature is used for cooling. When the solid metal with high temperature is cooled by water, there occurs sudden boiling of water at the surface of solid metal. It is important to control cooling time and cooling speed for the required characteristics of solid material. In this study, the boiling phenomenon with rapid cooling in water is analyzed by experiment and numerical analysis for control of heat treatment process. When the high temperature of solid metal is cooled by ambient water, the unsteady subcooled boiling model is suitable for numerical analysis instead of saturated boiling model and there exists considerable time delay before rapid heat transfer by boiling process.