Correlation of Droplet Flow Rate and Spray Cooling Heat Transfer in Forced Convection and Nucleate Boiling Region

강제대류 및 핵비등영역에 있어서 액적유량과 분무냉각 열전달의 상관관계에 관한 연구

In the present study, the correlation between the Nusselt number and Reynolds number was developed for forced convection and nucleate boiling region in spray cooling. Also the effect of droplet subcooling on spray cooling heat transfer was investigated. Full cone spray nozzles were employed for spray cooling experiment, and water and FC-77 were used for developing the correlation. From the experimental results, the correlation between the Nusselt number and Reynolds number based on droplet-flow-rate was developed. The correlation shows good predictions with ${\pm}30%$ error for water and FC-77.