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The Effect of Ambient Air Condition on Heat Transfer of Hot Steel Plate Cooled by an Impinging Water Jet  

Lee, Pil-Jong (Research Institute of Industrial Science and Technology (RIST))
Park, Hae-Won (Research Institute of Industrial Science and Technology (RIST))
Lee, Sung-Hong (School of Mechanical Engineering, Pusan National University)
Publication Information
Journal of Mechanical Science and Technology / v.17, no.5, 2003 , pp. 740-750 More about this Journal
Abstract
It has been observed that the cooling capacity of an impinging water jet is affected by the seasonal conditions in large-scale steel manufacturing processes. To confirm this phenomenon, cooling experiments utilizing a hot steel plate cooled by a laminar jet were conducted for two initial ambient air temperatures (10$^{\circ}C$ and 40$^{\circ}C$) in a closed chamber, performing an inverse heat conduction method for quantitative comparison. This study reveals that the cooling capacity at an air temperature of 10$^{\circ}C$ is lower than the heat extracted at 40$^{\circ}C$. The amount of total extracted heat at 10$^{\circ}C$ is 15% less than at 40$^{\circ}C$ , These results Indicate the quantity of water vapor, absorbed until saturation, affects the mechanism of boiling heat transfer.
Keywords
Impinging Liquid Jet; Hot Steel Plate; Ambient Air Temperature; Inverse Heat Conduction; Humidity Ratio;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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