Heat Transfer Correlations for Secondary Cooling in Continuous Casting,Steel Research International

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Heat Transfer Correlations for Secondary Cooling in Continuous Casting
Steel Research International ( IF 1.9 ) Pub Date : 2020-11-16 , DOI: 10.1002/srin.202000465
Petr Kotrbacek ₁ , Hana Bellerova ₁ , Tomas Luks ₁ , Miroslav Raudensky ₁

Affiliation

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 °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.

中文翻译：

连铸二次冷却的传热关联

对于此处介绍的研究，通用术语“喷雾冷却”仅限于在薄膜沸腾的情况下对热表面进行喷雾冷却，始于约1200°C的温度，并在冷却强度迅速变化的莱顿弗罗斯特点完成。这是连续铸造中二次冷却的典型区域。在此，为传热系数（HTC）的相关性。在所提出的相关性中，最常用的水冲击密度参数与冲击压力一起使用以获得良好的结果。这项研究同时使用了水雾喷嘴。结果显示并通过实验验证了为什么仅基于水撞击密度的方程无法提供足够精确的HTC预测。

更新日期：2020-11-16

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