Heat pipes, commonly used for heat dissipation and thermal management in small electronic and communication devices, are regarded as an excellent solution. Heat pipes must be in surface rather than line contact to be applied to the module and system-level heat dissipation package. As such, a round copper heat pipe is transformed into a plate-like shape through a secondary press process. In this study, an extrusion structure is designed to be sloped to solve the difficulty of making it relatively thin compared with the large area of the plate structure. Specifically, substantial partitions separating the working fluid flow space in the plate-type heat pipe are designed to be inclined at 45 deg, and the extruded envelope is developed to obtain the desired total thickness through the secondary press process. The capillary structure is inserted and positioned within the envelope prior to the secondary press process. In this study, an aluminum flat heat pipe (AFHP) with 0.95 mm total thickness, 150 mm total length, and a capillary structure with braided or carbon wire bundles added thereto was designed and manufactured. Performance test results indicated that the heat transfer performance of the AFHP with inclined wall did not show any deterioration characteristic compared with the AFHP with a normal vertical wall. The isothermal characteristics and heat transfer rate of the AFHP with Cu braid wick were superior to those of AFHP with a simple rectangular groove wick. By contrast, when the carbon wire bundle is added in the Cu braid, the isothermal characteristic was enhanced twice, and the heat transfer rate was 15.5 W by improving approximately 42% under the conditions that inclination angle is −90 deg and the evaporator temperature does not exceed 110 °C.
Skip Nav Destination
Article navigation
September 2019
This article was originally published in
Journal of Heat Transfer
Research-Article
Development of Thinned Aluminum Flat Heat Pipe Through Inclined Wall and Press Process
Seok-Hwan Moon,
Seok-Hwan Moon
Materials and Components
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
1Corresponding author.
Search for other works by this author on:
Su-Hyun Hong,
Su-Hyun Hong
Materials and Components
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
Search for other works by this author on:
Hyun-Tak Kim
Hyun-Tak Kim
Materials and Components
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
Search for other works by this author on:
Seok-Hwan Moon
Materials and Components
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
Su-Hyun Hong
Materials and Components
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
Hyun-Tak Kim
Materials and Components
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
Basic Research Division,
ICT Materials and Components
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
218 Gajeong-no, Yuseong-gu
Daejeon 34129, South Korea
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 30, 2018; final manuscript received January 7, 2019; published online July 22, 2019. Assoc. Editor: Fabio Bozzoli.
J. Heat Transfer. Sep 2019, 141(9): 091803 (6 pages)
Published Online: July 22, 2019
Article history
Received:
August 30, 2018
Revised:
January 7, 2019
Citation
Moon, S., Hong, S., and Kim, H. (July 22, 2019). "Development of Thinned Aluminum Flat Heat Pipe Through Inclined Wall and Press Process." ASME. J. Heat Transfer. September 2019; 141(9): 091803. https://doi.org/10.1115/1.4042511
Download citation file:
Get Email Alerts
Cited By
Surrogate Modeling-Based Analysis of Concentration Decay in Diffusion-Reaction Mass Transfer Problems
J. Heat Mass Transfer (June 2025)
External Conjugate Boiling On Channels. A Graetz Problem With Multiple Solutions
J. Heat Mass Transfer
Related Articles
Experimental Characterization and Static Modeling of McKibben Actuators
J. Mech. Des (September,2009)
Experimental Characterization and Control of Miniaturized Pneumatic Artificial Muscle
J. Med. Devices (December,2014)
Design of a Lightweight Hyper-Redundant Deployable Binary Manipulator
J. Mech. Des (January,2004)
Analysis of Circular Braiding Process, Part 1: Theoretical Investigation of Kinematics of the Circular Braiding Process
J. Manuf. Sci. Eng (August,1999)
Related Proceedings Papers
Related Chapters
A Utility Perspective of Wind Energy
Wind Turbine Technology: Fundamental Concepts in Wind Turbine Engineering, Second Edition
Part III Some Practical Advice
The Elements of Mechanical Design
Enhancing the Way of Children Learning Using Game-Based Techniques and Virtual World
International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)