Boiling Heat Transfer during Impingement of Two or Three Pipe Laminar Jets onto Moving Steel Sheet

The nature of boiling during rewetting of surfaces at temperatures exceeding the thermodynamic limit for water superheat

“…Although an increase of heat flux may seem desirable, uncontrolled rewetting can lead to several process complications. In metallurgy, uneven surface rewetting may lead to accumulation of thermal stresses, deformations, non-homogeneous mechanical properties and technical difficulties (Zhou et al 2007;Fujimoto et al 2016).…”

Heat Transfer via Laminar Jet Flow from Upward-facing Triple-pipe System onto Hot Moving Thin Steel Sheet

“…These trends are consistent with the results obtained in our previous work for a downward-oriented set of three jets. 14) Thus, the choice of an appropriate nozzle interval is an important issue in designing actual cooling facilities in which upward and downward jet impingements are used.…”

“…To address these issues, the authors have developed a method capable of evaluating the heat flux distributions in the jet impact region with higher spatial resolution than previous approaches. [12][13][14][15] The proposed method involves measurement of the temperature of a steel surface via thermography and three-dimensional inverse heat conduction analysis in the steady state. To develop this method, the authors studied the heat transfer characteristics of downward-facing single jets 12,13) and multiple-jet arrays 14) and upward-facing single jets 15) impinging on moving solids.…”

“…[12][13][14][15] The proposed method involves measurement of the temperature of a steel surface via thermography and three-dimensional inverse heat conduction analysis in the steady state. To develop this method, the authors studied the heat transfer characteristics of downward-facing single jets 12,13) and multiple-jet arrays 14) and upward-facing single jets 15) impinging on moving solids.…”

Boiling Heat Transfer Characteristics of Vertical Water Jet Impinging on Horizontally Moving Hot Plate

“…They reported that overall cooling efficiency improved in the case of the moving plate than the stationary one. Fujimoto et al [21][22][23] studied the hydrodynamics and the heat transfer characteristics of downward circular jets impinging on a hot moving stainless steel sheet by means of flash photography and thermography. The effects of varying jet velocity, and the moving velocity and temperature of the solid were investigated.…”