Fabrication and capillary characterization of axially micro-grooved wicks for aluminium flat-plate heat pipes

Tang, Heng; Tang, Yong; Yuan, Wei; Peng, Ruitao; Lu, Longsheng; Wan, Zhenping

doi:10.1016/j.applthermaleng.2017.10.091

Cited by 70 publications

(11 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To meet the requirements for a light weight material, in addition to miniaturization, most recent research interests have focused on aluminum heat pipes (with their operative temperature range and light weight) 45 – 48 . For example, Tang et al 49 designed a novel aluminum heat pipe with a micro V-grooved wick structure. It was fabricated by a ploughing-extrusion method and the inner surface was, thereafter, treated by chemical corrosion.…”

Section: Introductionmentioning

confidence: 99%

3D printed aluminum flat heat pipes with micro grooves for efficient thermal management of high power LEDs

Chang

Han

et al. 2021

Sci Rep

View full text Add to dashboard Cite

As the electronic technology becomes increasingly integrated and miniaturized, thermal management has become a major challenge for electronic device applications. A heat pipe is a highly efficient two-phase heat transfer device. Due to its simple structure, high thermal conductivity and good temperature uniformity, it has been used in many different industrial fields. A novel aluminum flat heat pipe, with micro-grooves, has in the present work been designed and fabricated by using a 3D printing technology. Aluminum powder was used as a raw material, which was selectively melted and solidified to form the shape of the heat pipe. The sintered aluminum powder increased the roughness of the inner surface of the heat pipe, and the designed micro-grooves further enhanced the capillary forces induced by the wick structure. The wettability, for the working fluid (acetone), was excellent and the capillary forces were sufficient for the working fluid to flow back in the pipe. The effects of working fluid filling ratio, on the heat transfer performance of the heat pipe, was also investigated. It was shown that a filling ratio of 10% gave the best heat transfer performance with the lowest thermal resistance. The 3D-printed flat heat pipe was, therefore, also tested for the thermal management of a LED. The temperature of the LED could be kept within 40 °C and its service life became prolonged.

show abstract

Section: Introductionmentioning

confidence: 99%

3D printed aluminum flat heat pipes with micro grooves for efficient thermal management of high power LEDs

Chang

Han

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…To further improve the heat performance of heat pipe, Tang et al (2018) fabricated the v-shaped groove wick made by the ploughingextrusion method. The capillary structure was characterized by the climbing test of acetone in capillary tube, and the liquid rising process was monitored by infrared imaging technology.…”

Section: Effect Of Wettability and Micronano Structured Surfacementioning

confidence: 99%

Research and Development of Loop Heat Pipe – A Review

Ji¹,

Guo²,

Xu³

2020

Frontiers in Heat and Mass Transfer

View full text Add to dashboard Cite

With fast development of electronic devices, novel strategies of thermal management have been received great attention to dissipate high heat fluxes. As an efficient heat transfer device, loop heat pipe (LHP) provides ideal solution for such purpose. Even though LHP was invented nearly half-century ago, challenges still exist on its design, fabrication and operation. The objective of this paper is to present a thorough review on LHPs, paying more attention on the working principle, advantage and configuration. The review is performed in three aspects. First, the macroscopic operation characteristics such as start-up, temperature fluctuations and anti-gravity operation are described. Second, effects of various parameters or factors such as porous wick material, pore size and micro-structure on LHPs are reviewed. Third, new concept LHPs using biporous wick and wettability modification are discussed. Finally, perspective of LHPs is presented, which guides future research and development activities, from both fundamental and application point of view.

show abstract

“…The following porous media, made of varied materials and techniques [41], were experimentally characterized: a) Sintered powder (silica gel sheets), used to test the setup; b) Stainless-steel wire mesh; c) Copper powder sintering; d) Scaffold 3D laser printing SLM.…”

Section: Experimental Determination Of the Capillary Actionmentioning

confidence: 99%

“…The following porous media, made of varied materials and techniques [41], were experimentally characterized: The speed of advance was determined at a height of about L = 30 mm and compared in terms of capillary action with one of the other wicks (manufactured with a different technique). This speed, slope α, had to be greater than or equal to 0.031 mm/s [23].…”

Section: Experimental Determination Of the Capillary Actionmentioning

confidence: 99%

Performance Assessment of a Three-Dimensional Printed Porous Media Produced by Selective Laser Melting Technology for the Optimization of Loop Heat Pipe Wicks

Esarte¹,

Ilzarbe

Bernardini³

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

The primary wick in a loop heat pipe device is a key component that is central to the operation of the device. Both high permeability and capillary pumping capacity, two properties highly dependent on wick structure, are strongly desirable for a satisfactory thermal performance. In this paper, selective laser melting (SLM), a three-dimensional (3D) printing technology, is used to create a primary wick for an 80 W heat transfer application. The permeability and capillarity values of this wick, experimentally measured, are compared with those built with the most widely used technologies nowadays, such as powder sintering and meshes. In this study, the SLM scaffold is shown to satisfy the minimum values required by the application in terms of capillarity and permeability: 0.031 mm/s and 4 × 10−12 m2, respectively. Our comparative study revealed that the wick produced with the SLM technology presented higher values of permeability, by two orders of magnitude, and slightly higher capillary figures than those corresponding to powder sintering for such application. However, it had capillary values well below those of a stainless-steel mesh. The hydraulic behavior of the SLM wick was better than that of the sintered copper powder, because it not only met the above-mentioned specifications, but it also improved its performance.

show abstract

Fabrication and capillary characterization of axially micro-grooved wicks for aluminium flat-plate heat pipes

Cited by 70 publications

References 39 publications

3D printed aluminum flat heat pipes with micro grooves for efficient thermal management of high power LEDs

3D printed aluminum flat heat pipes with micro grooves for efficient thermal management of high power LEDs

Research and Development of Loop Heat Pipe – A Review

Performance Assessment of a Three-Dimensional Printed Porous Media Produced by Selective Laser Melting Technology for the Optimization of Loop Heat Pipe Wicks

Contact Info

Product

Resources

About