Confined jet array impingement boiling of subcooled aqueous ethylene glycol solution

Investigation of spray cooling: Effect of different heater surfaces under acceleration

“…Schwarzkopf et al [12] noted that the cooling performance 69 dropped off once the spray angle exceeded 50°in their study about 70 the effect of spray angle in spray cooling. Besides, the effects of coolant 71 subcooling [13,14], non-condensable gas [8], and chamber pressure 72 [15] were also studied. Some study focused on the influence of spray There were studies about the enhancement of spray cooling 77 performance.…”

Submerged boiling and jet impingement for cooling high power electronics

“…Similar results were reported by Hong et al [78] and Mira-Herná ndez et al [79], who also found that the jet velocity had negligible effect on NBHT coefficient when boiling was fully established. In addition, they found the boiling curves for different nozzle-tosurface distances also converged.…”

“…In addition, they found the boiling curves for different nozzle-tosurface distances also converged. As a contrast, Hong et al [78] reported that liquid subcooling and jet-to-jet spacing could effectively influence the NBHT coefficient in the entire boiling regime (from ONB to CHF). On the other hand, increasing jet velocity and liquid subcooling could extend the nucleate boiling regime hence enlarge CHF while there existed an optimum value to achieve highest CHF for nozzle-to-surface distance and jet-to-jet spacing.…”

The jet impingement boiling heat transfer with ad hoc wall thermal boundary conditions

“…Contradictive findings were reported for the submerged and confined configurations. For example, the boiling curve was found to be either independent of jet velocity [17][18][19] or a function of the jet velocity [20][21][22]; either independent of jet subcooling [18] or a function of the subcooling [20]. The effects of impact distance [19], multiple jets [19], surface conditions [18,21] and the micro-jet impingement [23] were investigated as well.…”

“…For example, the boiling curve was found to be either independent of jet velocity [17][18][19] or a function of the jet velocity [20][21][22]; either independent of jet subcooling [18] or a function of the subcooling [20]. The effects of impact distance [19], multiple jets [19], surface conditions [18,21] and the micro-jet impingement [23] were investigated as well. Numerical simulations regarding jet impingement boiling, unlike the experimental investigations, were rare.…”