Experimental Demonstration of an Additively Manufactured Vapor Chamber Heat Spreader

Ozguc, Serdar; Pai, Saeel S.; Pan, Liang; Geoghegan, Patrick; Weibel, Justin A.

doi:10.1109/itherm.2019.8757359

Cited by 8 publications

(6 citation statements)

References 19 publications

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“…The vapour chamber (Figure 17) covers a 54 mm × 90 mm footprint area and, across the thickness, consists of 1 mm thick solid walls, 0.5 mm thick wicks attached on the inside of each wall and a 1.5 mm intermediate gap that serves as the vapour core. The authors proved that a relatively thick chamber wall ensures a hermetic seal of the vapour within the chamber, which is usually difficult to obtain in the traditional manufacturing methods [43]. Another example of successful construction of an AM manufactured vapour chamber was presented by Ozguc et al The authors presented a capability of fabricating a micro HP of complex geometry and monolithically embedded tailored wick structure confirming the functionality of the AM technology in HP development.…”

Section: Axial Groovesmentioning

confidence: 93%

“…The vapour chamber (Figure 17) covers a 54 mm × 90 mm footprint area and, across the thickness, consists of 1 mm thick solid walls, 0.5 mm thick wicks attached on the inside of each wall and a 1.5 mm intermediate gap that serves as the vapour core. The authors proved that a relatively thick chamber wall ensures a hermetic seal of the vapour within the chamber, which is usually difficult to obtain in the traditional manufacturing methods [43]. Additive manufacturing allows the possibility to embed porous structures and solid within one monolithic multi-functional part eliminating substantial thermal contracts resistances that exist in traditionally manufactured thermal management devices [17,18].…”

Section: Axial Groovesmentioning

confidence: 99%

“…Figure17. Photograph of the 3D-printed vapour chamber sample with a section cut across the width and inset view of the internal, as-printed structure[43].…”

mentioning

confidence: 99%

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Additive Manufacturing as a Solution to Challenges Associated with Heat Pipe Production

Szymański

Mikielewicz

2022

Materials

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The aim of this review is to present the recent developments in heat pipe production, which respond to the current technical problems related to the wide implementation of this technology. A novel approach in HP manufacturing is to utilise hi-tech additive manufacturing techniques where the most complicated geometries are fabricated layer-by-layer directly from a digital file. This technology might be a solution to various challenges that exist in HP production, i.e., (1) manufacturing of complex or unusual geometries HPs; (2) manufacturing complicated and efficient homogenous wick structures with desired porosity, uniform pore sizes, permeability, thickness and where the pores are evenly distributed; (3) manufacturing a gravity friendly wick structures; (4) high customisation and production time; (5) high costs; (6) difficulties in the integration of the HP into a unit chassis that enables direct thermal management of heated element and decrease its total thermal resistance; (7) high weight and material use of the part; (8) difficulties in sealing; (9) deformation of the flat shape HPs caused by the high pressure and uneven distribution of stress in the casing, among others.

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Section: Axial Groovesmentioning

confidence: 93%

“…The vapour chamber (Figure 17) covers a 54 mm × 90 mm footprint area and, across the thickness, consists of 1 mm thick solid walls, 0.5 mm thick wicks attached on the inside of each wall and a 1.5 mm intermediate gap that serves as the vapour core. The authors proved that a relatively thick chamber wall ensures a hermetic seal of the vapour within the chamber, which is usually difficult to obtain in the traditional manufacturing methods [43]. Additive manufacturing allows the possibility to embed porous structures and solid within one monolithic multi-functional part eliminating substantial thermal contracts resistances that exist in traditionally manufactured thermal management devices [17,18].…”

Section: Axial Groovesmentioning

confidence: 99%

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Additive Manufacturing as a Solution to Challenges Associated with Heat Pipe Production

Szymański

Mikielewicz

2022

Materials

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“…As it is po surface with AM, there has been significant research in the uti methods to produce heat pipes. SLM has been used to create he [82], AISI 316 [83], AlSi12 [84] (Figure 13a,) and laser sintering has steel [85,86]. The heat pipes manufactured with LPBF processes and their effective thermal conductivity is significantly higher tha ability to produce heat pipes via AM provides many possibiliti cooling, as the designs could be fitted for specific needs, and th optimized.…”

Section: Phase Change Coolingmentioning

confidence: 99%

Utilization of Additive Manufacturing in the Thermal Design of Electrical Machines: A Review

et al. 2022

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Additive manufacturing (AM) is a key technology for advancing many fields, including electrical machines. It offers unparalleled design freedom together with low material waste and fast prototyping, which is why it has become to focus of many researchers. For electrical machines, AM allows the production of designs with optimized mechanical, electromagnetic and thermal parameters. This paper attempts to give the reader an overview of the existing research and thermal solutions which have been realized with the use of AM. These include novel heat sink and heat exchanger designs, solutions for cooling the machine windings directly, and additively manufactured hollow windings. Some solutions such as heat pipes, which have been produced with AM but not used to cool electrical machines, are also discussed, as these are used in conventional designs and will certainly be used for additively manufactured electrical machines in the future.

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“…Recent studies describe the use of MAM to create cooling systems for power electronics with the fabrication of a hybrid microjet-microchannel heat sink [5]. Other systems have been reported such as: low-mass thermal management system based on titanium-water heat pipes with grooves [6], vapor chamber with porous structure distributed through the chamber and 3D printed with stainless steel [7], 3D printed loop heat-pipe with stainless steel [8] or the design of an air-cooled heat-sink [9]. However, MAM requires inert atmosphere to prevent the oxidation of the metal during printing which explains the high cost fabrication.…”

Section: Introductionmentioning

confidence: 99%

Investigation of 3D printed polymer-based heat dissipator for GaN transistors

Gerges

Marie

Wickramasinghe

et al. 2021

2021 23rd European Conference on Power Electronics and Applications (EPE'21 ECCE Europe)

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GaN transistors are limited in their operational capabilities due to some limitations, of which the thermal management aspects. Until now, most of the existing heat-dissipator systems using additive manufacturing (AM) are based on a metallic finned heat sink, which is heavy and has a relatively high thermal resistance. Heat dissipation based on a phase change as operated in heat pipes is more efficient. Such heat sinks have been experimented with metals or ceramics and not by now with polymers. However, this may be of great interest. The use of polymer may enable reducing weight and cost of the thermal device. It may allow also improving the chemical compatibility of the heat pipe material and fluid, as this is often a severe issue. This work presents a characterization of a 3D-printed polymer-based heat pipe evaporator intended for GaN transistors. The electronic copper circuit on the polymer surface is created using plastronics technology. The metallized circuit presents an adequate electrical conductivity. The thermal characterization performed with the HFE 7000 fluid, shows that it is actually possible to cover the entire heated polymer wall with active nucleation sites once the full developed nucleate boiling regime is reached. The heat conduction through the insulating polymer wall appears as the limiting phenomenon for heat transfer.

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Experimental Demonstration of an Additively Manufactured Vapor Chamber Heat Spreader

Cited by 8 publications

References 19 publications

Additive Manufacturing as a Solution to Challenges Associated with Heat Pipe Production

Additive Manufacturing as a Solution to Challenges Associated with Heat Pipe Production

Utilization of Additive Manufacturing in the Thermal Design of Electrical Machines: A Review

Investigation of 3D printed polymer-based heat dissipator for GaN transistors

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