Cooling of a Multichip Electronic Module by Means of Confined Two-Dimensional Jets of Dielectric Liquid

Abstract

Experiments were performed to investigate single-phase heat transfer from a smooth 12.7 × 12.7 mm2 simulated chip to a two-dimensional jet of dielectric Fluorinert FC-72 liquid issuing from a thin rectangular slot into a channel confined between the chip surface and nozzle plate. The effects of jet width, confinement channel height, and impingement velocity have been examined. Channel height had a negligible effect on the heat transfer performance of the jet for the conditions of the present study. A correlation for the convective heat transfer coefficient is presented as a function of jet width, heater length, flow velocity, and fluid properties. A self-contained multichip cooling module consisting of a 3 × 3 array of heat sources confirmed the uniformity and predictability of cooling for each of the nine chips, and proved the cooling module is well suited for packaging large arrays of high-power density chips.

Modeling Single-Phase and Boiling Liquid Jet Impingement Cooling in Power Electronics

“…These studies include experiments, theoretical analyses, and numerical simulations. Different configurations of impinging jets have been studied, including single free-surface jets [5], multiple free-surface jets [6][7][8], single submerged jets [5,9,10], multiple submerged jets [6,9], and confined single submerged jets [3,[11][12][13]. Both planar and circular jets have been studied.…”

“…In the context of boiling liquid jets, extensive work has already been reported in the literature [14,[28][29][30][31]. Many studies have been carried out with circular [32][33][34][35][36][37][38][39] as well as planar [10,[40][41][42] jets in both the free-surface and submerged configuration. This includes single and multiple jets [36, [43][44][45][46][47].…”

Local convective heat transfer from small heaters to impinging submerged axisymmetric jets of seven coolants with Prandtl number ranging from 0.7 to 348

“…ter jets in electronic devices [2,3], and water jets in hot rolling process of metals [4]. Much attention is being directed to the basic study of liquid jets recentlyIS -7].…”

Numerical Studies on Cooling Of Electronics Module Using Nzo, an and Mg Water Based Nanofluids

“…Wadsworth and Mudawar [1] examined on cooling of a multichip electronic module with confined 2D jets of dielectric liquid. Webb and Ma [2] studied about single phase liquid jet impingement heat transfer.…”