Heat Transfer Correlations for Secondary Cooling in Continuous Casting

The general term spray cooling is for the research presented here limited to the spray cooling of hot surfaces with film boiling, starting at temperatures of about 1200 degrees C and finishing at the Leidenfrost point where cooling intensity changes rapidly. This is typical area of secondary cooling in continuous casting. Herein, a correlation for Heat Transfer Coefficient (HTC). The most frequently used parameter of water impingement density is in the presented correlation used together with impact pressure to get good results. This study uses both water and mist nozzles. It is shown and experimentally verified why equations based only on the water impingement density cannot provide sufficiently precise predictions of HTC.

Automated summary

The research presented in this paper focuses on spray cooling of hot surfaces, specifically in the context of continuous casting. A correlation for Heat Transfer Coefficient (HTC) is proposed, taking into account both water impingement density and impact pressure. The study demonstrates that equations based solely on water impingement density cannot accurately predict HTC.