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- W4220792863 abstract "Two-phase cooling is an efficient method for heat removal from electronic systems. One implementation of this approach is based on electrospray atomization, where droplets of the cooling fluid are produced using high electric potentials. Electrospray cooling has several unique advantages, including low power consumption, precise delivery of coolant, and compact design. Past work has mostly focused on spray orientations where the nozzle is directed normal to the high-temperature surface. In this short communication, we examine electrospray cooling at varying spray angles, which can provide easier integration for constrained environments or hard-to-reach surfaces. Water is used as the working fluid at four different flow rates from 60 to 120 mL/hr. The nozzle orientation was varied from normal to the surface (90°) down to an acute spray angle of 25°. We found that any angle larger than 30° achieved an evaporation efficiency exceeding 100% at the critical heat flux. The efficiency dropped to 90% at an angle of 25° for all flow rates. Surface temperatures increased and the critical heat flux decreased with spray angle, with the sharpest change occurring at a spray angle of 25°. This was due to droplet rebound, incomplete droplet breakup at high flow rates, and a reduction in electrohydrodynamically-induced convective cooling. The work reported here will assist in the integration of electrospray atomization for cooling applications." @default.
- W4220792863 created "2022-04-03" @default.
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- W4220792863 date "2022-06-01" @default.
- W4220792863 modified "2023-10-16" @default.
- W4220792863 title "Effect of nozzle orientation on electrospray cooling" @default.
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- W4220792863 doi "https://doi.org/10.1016/j.applthermaleng.2022.118360" @default.
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