scholarly journals Heat Transfer from a Hot Steel Plate Impinged by Air-atomized Water Jet and Impinging Water Jet

2019 ◽  
Vol 59 (1) ◽  
pp. 113-121 ◽  
Author(s):  
Qian Xie ◽  
Zhenyi Huang ◽  
Qingyu Hou ◽  
Long Zhang ◽  
Jiajia Cai
Keyword(s):  
Heat Transfer ◽  
Steel Plate ◽  
Water Jet ◽  
Atomized Water

Visual Observation of Circular Water Jet Impingement Boiling on Stationary Hot Steel Plate

2015 ◽  
Vol 137 (8) ◽  
Author(s):  
Sangho Sohn ◽  
Jaebum Park
Keyword(s):  
Heat Transfer ◽  
Forced Convection ◽  
Steel Plate ◽  
Jet Impingement ◽  
Visual Observation ◽  
Water Jet ◽  
Cooling Curve ◽  
Impingement Heat Transfer ◽  
Jet Impingement Boiling ◽  
Temperature Heat

The time-and space-resolved water jet impingement heat transfer on stationary hot steel plate was measured by a novel experimental technique that has a function of high-temperature heat flux gauge. The simultaneous visual observation was helpful to understand the complex heat transfer regimes occurring on a stationary hot steel plate cooled from 900°C by a circular water jet. The heat transfer regimes adjacent to a circular water jet impinging on a hot steel plate were known as to be classified into 5 distinct regimes; (I) single phase forced convection, (II) nucleate and transition boiling, (III) forced convection film boiling, (IV) agglomerated pools, (V) radiation and natural convection to surroundings. The observed images of water jet impingement boiling were well agreed with the measured cooling curve and boiling curve, so this study can provide the benchmark data for validating the 5 distinct regimes.

The effect of ambient air condition on heat transfer of hot steel plate cooled by an impinging water jet

2003 ◽  
Vol 17 (5) ◽  
pp. 740-750 ◽  
Author(s):  
Pil-Jong Lee ◽  
HaeWon Choi ◽  
Sung-Hong Lee
Keyword(s):  
Heat Transfer ◽  
Steel Plate ◽  
Ambient Air ◽  
Water Jet

Effect of Water Temperature on Spray Cooling Heat Transfer on Hot Steel Plate

2010 ◽  
Author(s):  
Jungho Lee ◽  
Cheong-Hwan Yu ◽  
Sang-Jin Park
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Water Temperature ◽  
Steel Plate ◽  
Cooling Water ◽  
Local Heat ◽  
Spray Cooling ◽  
Transfer Coefficients ◽  
Cooling Water Temperature ◽  
Local Heat Flux

Water spray cooling is an important technology which has been used in a variety of engineering applications for cooling of materials from high-temperature nominally up to 900°C, especially in steelmaking processes and heat treatment in hot metals. The effects of cooling water temperature on spray cooling are significant for hot steel plate cooling applications. The local heat flux measurements are introduced by a novel experimental technique in which test block assemblies with cartridge heaters and thermocouples are used to measure the heat flux distribution on the surface of hot steel plate as a function of heat flux gauge. The spray is produced from a fullcone nozzle and experiments are performed at fixed water impact density of G and fixed nozzle-to-target spacing. The results show that effects of water temperature on forced boiling heat transfer characteristics are presented for five different water temperatures between 5 to 45°C. The local heat flux curves and heat transfer coefficients are also provided to a benchmark data for the actual spray cooling of hot steel plate cooling applications.

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