Experimental characterization of a hybrid impinging microjet-microchannel heat sink fabricated using high-volume metal additive manufacturing

A high-performance water-cooled micro heat sink for the thermal management of high heat flux microelectronics was designed, fabricated, and tested. The heat sink design leverages a multi- metal electrodeposition additive manufacturing process to produce complex flow which are impossible to fabricate...

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Main Authors: R. Kempers, J. Colenbrander, W. Tan, R. Chen, A.J. Robinson
Format: Article
Language:English
Published: Elsevier 2020-08-01
Series:International Journal of Thermofluids
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2666202720300161
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author R. Kempers
J. Colenbrander
W. Tan
R. Chen
A.J. Robinson
author_facet R. Kempers
J. Colenbrander
W. Tan
R. Chen
A.J. Robinson
author_sort R. Kempers
collection DOAJ
description A high-performance water-cooled micro heat sink for the thermal management of high heat flux microelectronics was designed, fabricated, and tested. The heat sink design leverages a multi- metal electrodeposition additive manufacturing process to produce complex flow which are impossible to fabricate with traditional processes. A previous study employed simulation-driven design to develop and optimize micro heat sinks and is a hybrid of microchannels with an array of integrated microjets.In the present investigation, a prototype heat sink was fabricated and tested at heat fluxes up to and exceeding 1000 W/cm2. The results demonstrate reasonable agreement between the numerical predictions and experimental results, considering the complex geometry flow and conjugate heat transfer within the device.From a thermal–hydraulic performance standpoint, the heat exchanger achieved an estimated overall thermal conductance of ~330 kW/m2K with a pressure drop of 160 kPa (23 psi) for a flow rate of 0.5 L/min. For inlet water at 20 °C, this corresponded to a measured base temperature of 54 °C at an applied heat flux of 1000 W/cm2. The hybrid microchannel–microjet heat sink further exhibited an enhancement ratio of 6 when compared with a microchannel heat exchanger of commensurate design. To the extent of our knowledge, this microfluidic heat exchanger has achieved one of the highest effective thermal conductance levels reported in the literature and has done so at moderate pressure drop and flow rate.
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spelling doaj.art-b15a22753c2f45469aef4625dc83ecdd2022-12-22T01:19:42ZengElsevierInternational Journal of Thermofluids2666-20272020-08-015100029Experimental characterization of a hybrid impinging microjet-microchannel heat sink fabricated using high-volume metal additive manufacturingR. Kempers0J. Colenbrander1W. Tan2R. Chen3A.J. Robinson4York University, Toronto, Canada; Confluent Research Ltd., 6 The Avenue, Inse Bay, Laytown, Ireland; Corresponding author.Confluent Research Ltd., 6 The Avenue, Inse Bay, Laytown, IrelandMicrofabrica, 7911 Haskell Ave, Van Nuys, CaliforniaMicrofabrica, 7911 Haskell Ave, Van Nuys, CaliforniaConfluent Research Ltd., 6 The Avenue, Inse Bay, Laytown, IrelandA high-performance water-cooled micro heat sink for the thermal management of high heat flux microelectronics was designed, fabricated, and tested. The heat sink design leverages a multi- metal electrodeposition additive manufacturing process to produce complex flow which are impossible to fabricate with traditional processes. A previous study employed simulation-driven design to develop and optimize micro heat sinks and is a hybrid of microchannels with an array of integrated microjets.In the present investigation, a prototype heat sink was fabricated and tested at heat fluxes up to and exceeding 1000 W/cm2. The results demonstrate reasonable agreement between the numerical predictions and experimental results, considering the complex geometry flow and conjugate heat transfer within the device.From a thermal–hydraulic performance standpoint, the heat exchanger achieved an estimated overall thermal conductance of ~330 kW/m2K with a pressure drop of 160 kPa (23 psi) for a flow rate of 0.5 L/min. For inlet water at 20 °C, this corresponded to a measured base temperature of 54 °C at an applied heat flux of 1000 W/cm2. The hybrid microchannel–microjet heat sink further exhibited an enhancement ratio of 6 when compared with a microchannel heat exchanger of commensurate design. To the extent of our knowledge, this microfluidic heat exchanger has achieved one of the highest effective thermal conductance levels reported in the literature and has done so at moderate pressure drop and flow rate.http://www.sciencedirect.com/science/article/pii/S2666202720300161Micro heat sinkMicro heat exchangerMicro cold plateHigh volume micro additive manufacturing and 3d printingHigh heat fluxMicrojets and microchannels
spellingShingle R. Kempers
J. Colenbrander
W. Tan
R. Chen
A.J. Robinson
Experimental characterization of a hybrid impinging microjet-microchannel heat sink fabricated using high-volume metal additive manufacturing
International Journal of Thermofluids
Micro heat sink
Micro heat exchanger
Micro cold plate
High volume micro additive manufacturing and 3d printing
High heat flux
Microjets and microchannels
title Experimental characterization of a hybrid impinging microjet-microchannel heat sink fabricated using high-volume metal additive manufacturing
title_full Experimental characterization of a hybrid impinging microjet-microchannel heat sink fabricated using high-volume metal additive manufacturing
title_fullStr Experimental characterization of a hybrid impinging microjet-microchannel heat sink fabricated using high-volume metal additive manufacturing
title_full_unstemmed Experimental characterization of a hybrid impinging microjet-microchannel heat sink fabricated using high-volume metal additive manufacturing
title_short Experimental characterization of a hybrid impinging microjet-microchannel heat sink fabricated using high-volume metal additive manufacturing
title_sort experimental characterization of a hybrid impinging microjet microchannel heat sink fabricated using high volume metal additive manufacturing
topic Micro heat sink
Micro heat exchanger
Micro cold plate
High volume micro additive manufacturing and 3d printing
High heat flux
Microjets and microchannels
url http://www.sciencedirect.com/science/article/pii/S2666202720300161
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