Modeling and Experimental Research on Spray Cooling

As a promising solution for high heat flux applications, spray cooling has been widely studied in recent years. A little theoretical knowledge for the heat transfer mechanism of spray cooling is applied to practical design. In order to obtain a better understanding of spray cooling, models of the thickness and the temperature distribution within the range of the impact area were established considering the micro-scale phenomena, such as velocity slip and temperature jump. The heat transfer coefficient (HTC) was calculated. An experimental apparatus was set up to validate the HTC in the models. Experiments were performed for a commercial pressurized full cone nozzle using distilled water as the working fluid. The maximum error between the experimental HTC and the simulated HTC is within 16%.