(1) Research Institute of Industrial Science and Technology (RIST), 790-600 Pohang, Korea;(2) School of Mechanical Engineering, Pusan National University, 609-735 Pusan, Korea
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°C and 40°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°C
is lower than the heat extracted at 40°C. The amount of total extracted heat at 10°C is 15% less than at 40°C. These results
indicate the quantity of water vapor, absorbed until saturation, affects the mechanism of boiling heat transfer.