Jet Impingement Heat Sinks With Application Toward Power Electronics Cooling: A Review

Klinkhamer, C.; Iyer, K. Lakshmi Varaha; Etemadi, Majed; Balachandar, Ram; Barron, R. M.

doi:10.1109/tcpmt.2023.3288612

Cited by 10 publications

(2 citation statements)

References 148 publications

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“…1 Advanced heat dissipation systems deployed include microheat pipes, 2 heat pumps, 3 thermoelectric cooling, 4 boiling heat transfer, 5 and jet impingment. 6 Among these, the liquid-cooled microchannel heat sink (MCHS) is proven effective in cooling microelectronic devices. [7][8][9] While increasing heat flux in the circuit remains an outstanding problem associated with the design of MCHS, it presents other challenges, like nonuniform cooling and the formation of thermal hotspots, which must be resolved as well.…”

Section: Introductionmentioning

confidence: 99%

“…Conventional heat sink systems, consisting of fins and air‐cooling systems, are found to be inadequate, not only due to constraints of physical space but also because of lower thermal properties 1 . Advanced heat dissipation systems deployed include microheat pipes, 2 heat pumps, 3 thermoelectric cooling, 4 boiling heat transfer, 5 and jet impingment 6 …”

Section: Introductionmentioning

confidence: 99%

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Modulating fluid rheology and confinement toward augmenting the performance of a double layered microchannel heat sink

Kumar,

Das,

Bakli

2024

Heat Trans

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The improvement of the cooling performance of liquid‐cooled microchannel heat sinks used for densely packed electronic circuits is sorted via passive techniques like tuning substrate or coolant properties. We propose a design for enhancing heat sink performance by simulataneously modifying the channel geometry and tuning the fluid rheology. By modeling the coolant as a power law fluid, its rheological behavior is varied ranging from shear‐thinning to shear‐thickening, alongside Newtonian fluid. We introduced tapering to the middle wall that separates the bottom and top channels of a double layered microchannel heat sink (DL‐MCHS), causing both channels to converge. This convergence not only increases the flow velocity within the downstream microchannel but also reduces the apparent viscosity of the shear‐thinning fluid being subjected to shear, resulting in enhanced thermal and hydraulic performance. We analyze the results from both the first and the second law of thermodynamics context, demonstrating that a tapered DL‐MCHS with shear‐thinning fluid outperforms a straight partition wall DL‐MCHS with Newtonian coolant. However, we also discovered that extreme tapering compromises thermodynamic viability, but by fine‐tuning the extent of tapering, we inferred that a DL‐MCHS with shear‐thinning fluid can become viable with little compromise in the thermal performance.

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