Design and performance optimization of miniature heat pipes in LTCC

Shi, Peter Z.F.; Chua, K.M.; Wong, Stephen Chee Khuen; Tan, Y.M.

doi:10.1088/1742-6596/34/1/024

Cited by 10 publications

(5 citation statements)

References 2 publications

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“…The optimal working fluid compatible with these materials is determined [14]. [15]. Choosing a wick capable of supplying the desired capability head capacity is necessary.…”

Section: Design Methodology and Experimental Setupmentioning

confidence: 99%

“…Once these conditions have been met, the comprehensive design process can begin in earnest. The heat pipe and the condenser and evaporator are specified when the unit is required to work against the "g" force [15]. Specifications will include weight restrictions and temperature differences between the evaporator and condenser.…”

Section: Design Methodology and Experimental Setupmentioning

confidence: 99%

“…The merit number(MN) as a function of temperature is shown in Figure : 2 for several typical heat pipe working fluids [18] [13]. The figure shows that it is obvious why it is chosen as the heat pipe working fluid whenever possible [15]. Water merit number is approximately ten times higher than everything else except the liquid metal is, and it means that it will carry ten times more power than other working fluids…”

Section: Design Proceduresmentioning

confidence: 99%

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Experimental Analysis of Single and Three-Stage Heat Pipe With Three Fluids for Cooling of Electronic Devices

2022

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An electronic device and energy storage device such as a super and ultra-capacitor are kept cool by a single or three-stage cascade heat pipe: selected heat pipe materials, primary and secondary fluids. Cascade heat pipes designed, built, and tested single and three fluid cascade heat pipes with heat inputs ranging from 100 to 200 W. The axial temperature difference is studied, and the evaporator and condenser temperatures are measured using a thermocouple and connected to an Agilent Data Logger. In multistage heat pipe experiments, each stage reached a steady state after 35 seconds. Heat pipe temperature, thermal resistance, and heat transfer were predicted. The primary fluid (water) merit number 4.26x10 9 is 25 times higher than ethanol merit number 166.3x10 6 and acetone merit number, but ethanol had a higher latent heat of evaporation than water. The operating range (100 to 220 deg C) was suitable for energy storage devices.

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“…The optimal working fluid compatible with these materials is determined [14]. [15]. Choosing a wick capable of supplying the desired capability head capacity is necessary.…”

Section: Design Methodology and Experimental Setupmentioning

confidence: 99%

Section: Design Methodology and Experimental Setupmentioning

confidence: 99%

Section: Design Proceduresmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Analysis of Single and Three-Stage Heat Pipe With Three Fluids for Cooling of Electronic Devices

2022

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“…The simulated results with the proposed model demonstrate better coherence to the experiment showing the importance of accurate physical modeling to heat conduction behavior of the FMHP. Shi et al (2006) carried out a performance evaluation of miniature heat pipes in LTCC by numerical analysis, and the optimum miniature heat pipe design was defined. The effect of the groove depth, width and vapor space on the heat transfer capacity of miniature heat pipes was analyzed.…”

Section: Theoretical and Experimental Analysis Of Flows And Heat Tranmentioning

confidence: 99%

Theoretical and Experimental Analysis of Flows and Heat Transfer Within Flat Mini Heat Pipe Including Grooved Capillary Structures

Zaghdoudi¹,

Maalej²,

Mansouri³

2011

Two Phase Flow, Phase Change and Numerical Modeling

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“…The results showed that a heat dissipation of 20 W was achieved with water as the heat pipe working fluid. For thinner ceramic heat pipes, Shi et al prepared grooved ceramic heat pipes with a groove size of 100 μm in width, 150 μm in depth, and 200 μm in spacing by the low-temperature cofire ceramic method. The results showed that the heat pipe with dimensions of 10 × 3 × 1.2 mm 3 and a water filling ratio of 20–30% dissipated a heating power of only 0.93 W. Tlili et al prepared a ceramic micro heat pipe with dimensions of 9.6 × 4 × 0.9 mm 3 and a grooved wick by using the low-temperature cofire ceramic method.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Bioinspired Hierarchical Microgroove Wick for Ceramic Vapor Chambers Achieved by Nanosecond Pulsed Lasers

Yuan,

Yan,

Huang

et al. 2024

Langmuir

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Directly integrating ceramic vapor chambers into the insulating substrate of semiconductor power devices is an effective approach to solve the problem of heat dissipation. Microgrooves that could be machined directly on the shell plate without contact thermal resistance and mechanical dislocation offer exciting opportunities to achieve high-performance ceramic vapor chambers. In this study, a bioinspired hierarchical microgroove wick (BHMW) containing low ribs via one-step nanosecond pulsed laser processing was developed, as inspired by the Sarracenia trichome. The superwicking behavior of microgrooves with different structural parameters was investigated using capillary rise tests and droplet-spreading experiments. The BHMW exhibited excellent capillary performance and anisotropic hemiwicking performance. At a laser scanning spacing of 30 μm, the BHMW achieved a capillary wicking height of 114 mm within 20 s. The optimized BHMW demonstrated a capillary parameter (ΔP c •K) and an anisotropic hemiwicking ratio of 4.46 × 10 −7 N and 11.93, respectively, which were 1182 and 946% higher than references, as achieved through nanosecond pulsed laser texturing under identical parameters. This work not only develops a high-performance hierarchical alumina microgroove wick structure but also outlines design guidelines for high-performance ceramic vapor chambers for thermal management in semiconductor power devices.

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Design and performance optimization of miniature heat pipes in LTCC

Cited by 10 publications

References 2 publications

Experimental Analysis of Single and Three-Stage Heat Pipe With Three Fluids for Cooling of Electronic Devices

Experimental Analysis of Single and Three-Stage Heat Pipe With Three Fluids for Cooling of Electronic Devices

Theoretical and Experimental Analysis of Flows and Heat Transfer Within Flat Mini Heat Pipe Including Grooved Capillary Structures

High-Performance Bioinspired Hierarchical Microgroove Wick for Ceramic Vapor Chambers Achieved by Nanosecond Pulsed Lasers

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