A Review of Cooling in Microchannels

Tullius, Jami F.; Vajtai, Róbert; Bayazıtoğlu, Yıldız

doi:10.1080/01457632.2010.506390

Cited by 134 publications

(39 citation statements)

References 43 publications

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“…Microchannel heat sinks have been proven to dissipate heat at far higher rate than the conventional devices due to their large heat transfer surface to volume ratio (Sobhan and Garimella, 2001). These are considered to be the choice of future cooling methods where heat is to be removed from very small surfaces with high heat fluxes (Tullius et al, 2011;Zhang et al, 2005;and Wang and Peng, 1994).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Interrupted Rectangular Microchannel Heat Sink with High Aspect Ratio

Kamal

Dewan

2017

JAFM

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A computational modelling of microchannel heat sinks with high aspect ratio has been performed to compare the geometrical features in the plane parallel to the heating surface and to determine the optimum configuration for the best heat transfer characteristics. A periodic thermal development of flow can cause significant heat transfer enhancement. A consensus on a particular geometrical configuration that provides the best heat transfer characteristics has not been reached in the literature, although many novel ideas have been proposed recently. Firstly the validity and applicability of microchannel sink modelling is presented followed by an optimization of parameters of interrupted microchannel heat sink. Consequences of the multichannel effect due to the introduction of transverse microchamber are also presented. It has been shown that the average Nusselt number of the microchannel heat sink increases by the introduction of a transverse microchamber with the additional advantage of a lower pressure drop. There exists an optimum width for the transverse microchamber for which the interrupted microchannel heat sink shows optimum characteristics.

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Section: Introductionmentioning

confidence: 99%

Analysis of Interrupted Rectangular Microchannel Heat Sink with High Aspect Ratio

Kamal

Dewan

2017

JAFM

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“…The results are split into two heating cases as previously described: (1) hotspots that span the length or width of the heat sink tested with increasing power input against an unpowered background, and (2) non-uniform heating conditions with a peak along the width or length of the heat sink.…”

Section: Resultsmentioning

confidence: 99%

“…Many studies in the literature have investigated uniform base heating profiles applied to microchannel heat sinks, as reviewed, for example, in [1][2][3]. These studies experimentally measured the onset of nucleate boiling [4], pressure drop [5,6], and heat transfer coefficient [5,7,8], and also developed models to predict the critical heat flux (CHF) [9,10].…”

Section: Introductionmentioning

confidence: 99%

Local measurement of flow boiling heat transfer in an array of non-uniformly heated microchannels

Ritchey

Weibel

Garimella

2014

International Journal of Heat and Mass Transfer

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As electronics packages become increasingly thinner and more compact due to size, weight, and performance demands, the use of large intermediate heat spreaders to mitigate heat generation nonuniformities are no longer a viable option. Instead, non-uniform heat flux profiles produced from chipscale variations or from multiple discrete devices are experienced directly by the ultimate heat sink. In order to address these thermal packaging trends, a better understanding of the impacts of non-uniform heating on two-phase flow characteristics and thermal performance limits for microchannel heat sinks is needed. An experimental investigation is performed to explore flow boiling phenomena in a microchannel heat sink with hotspots, as well as non-uniform streamwise and transverse peak-heating conditions spanning across the entire heat sink area. The investigation is conducted using a silicon microchannel heat sink with a 5 × 5 array of individually controllable heaters attached to a 12.7 mm × 12.7 mm square base.

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“…In these cases, the use of advanced and optimized cooling systems is inevitable. Tullius et al [7] studies the cooling effects of microchannels in different geometries and fluids. The most common fluids used in microchannels were air and water whose conduction heat transfer rate is very low.…”

Section: Introductionmentioning

confidence: 99%

Developing the laminar MHD forced convection flow of water/FMWNT carbon nanotubes in a microchannel imposed the uniform heat flux

Karimipour

Taghipour

Malvandi

2016

Journal of Magnetism and Magnetic Materials

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A Review of Cooling in Microchannels

Cited by 134 publications

References 43 publications

Analysis of Interrupted Rectangular Microchannel Heat Sink with High Aspect Ratio

Analysis of Interrupted Rectangular Microchannel Heat Sink with High Aspect Ratio

Local measurement of flow boiling heat transfer in an array of non-uniformly heated microchannels

Developing the laminar MHD forced convection flow of water/FMWNT carbon nanotubes in a microchannel imposed the uniform heat flux

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