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首页> 外文期刊>Heat Transfer Engineering >Effect of Impingement Density and Nozzle to Target Distance on Spray Cooling of Steel Plate-An Experimental Investigation
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Effect of Impingement Density and Nozzle to Target Distance on Spray Cooling of Steel Plate-An Experimental Investigation

机译：冲击密度和喷嘴对靶距的影响对钢​​板喷雾冷却的实验研究

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摘要

In the steel making industry, high heat fluxes are obtained using effective cooling techniques such as spray impingement cooling. Spray impingement technique involve factors like droplet size, spray height and spray angle, impingement density, and nozzle geometry rendering it very difficult to measure the effects of individual parameters. In the present study, the cooling rate of the plate was experimentally investigated using distilled water as coolant in 3 pressurized nozzles for spray over the surface of the steel plate at elevated temperatures and the behavior of plate temperature with time was tabulated. Cooling curves were generated for different and varying spray parameters like water pressures, nozzle tip to surface distance, and impingement density. It was observed that the cooling rate at the stagnation zone was strongly dependent on the water pressures and nozzle tip to surface distances with maximum cooling rates reaching within 1-2 seconds after the impingement. The average impingement density increased with increase in water pressure and the cooling rate reduces at higher pressures and nozzle tip to surface distances.
机译：在炼钢工业中，使用有效的冷却技术（例如喷雾冲击冷却）可获得高热通量。喷雾撞击技术涉及许多因素，例如液滴大小，喷雾高度和喷雾角度，撞击密度和喷嘴几何形状，这使得很难测量各个参数的影响。在本研究中，使用蒸馏水作为冷却剂，在3个加压喷嘴中以升高的温度对钢板表面进行喷雾实验，对板的冷却速率进行了实验研究，并将板温度随时间的变化情况制成表格。针对不同且变化的喷雾参数（例如水压，喷嘴尖端到表面的距离和撞击密度）生成冷却曲线。观察到，停滞区的冷却速度很大程度上取决于水压和喷嘴尖端至表面的距离，最大冷却速度在撞击后的1-2秒内达到。平均冲击密度随水压的增加而增加，而冷却速度在较高压力下会降低，并且喷嘴尖端到表面的距离会降低。

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  • 来源
    《Heat Transfer Engineering》 |2017年第15期|1198-1208|共11页
  • 作者

    Purna Chandra Mishra; Santosh Kumar Nayak; Manoj Ukamanal;

  • 作者单位

    School of Mechanical Engineering, KIIT University, Odisha, India;

    School of Mechanical Engineering, KIIT University, Odisha, India;

    School of Mechanical Engineering, KIIT University, Odisha, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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