Advances in vapor chambers and phase change heat spreaders

Peterson, G. P.; Ma, Hongbin

doi:10.1016/bs.aiht.2021.06.001

Cited by 3 publications

(1 citation statement)

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“…Its inner surface is made of the capillary wick to house the condensate film and the vapor. Preserving nearly the same structure as heat pipe, the vapor chamber is designed as a thin, flat structure unit to make two-phase heat transfer [39]. In its conventional design, the wick is made of the sintered copper layer and copper fins.…”

Section: Comparison Of the Cooling Capacity Among Four Specimens With...mentioning

confidence: 99%

Heat Transportation by Acicular Micro-Textured Device with Semi-Regular Alignment

Aizawa,

Nakata,

Nasu

2024

Heat Transfer - Advances in Fundamentals and Applications

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Heat transportation device was developed to improve the cooling capacity through the heat convection process and to make low-temperature radiation from the heat source to the objective body in vacuum. This device consisted of the metallic substrate and the acicular micro−/nano-textures in semi-regular alignment. The micro-cone unit cell size and pitch in these textures was controllable by tuning the total current and the current density in the electrochemical processing. Four devices with various unit cell sizes and pitches were prepared for geometric characterization by SEM (Scanning Electron Miscopy) and for spectroscopic analyses on the IR-emittance by FT-IR (Fourier Transform-InfraRed) spectroscopy. Heat radiation experiment was performed to describe the heat transportation in vacuum from the heat source at 323 K to the objective plate. The texture size effect on the low-temperature heat radiation was investigated to build up a physical model for this heat radiation device. Heat convection experiment was also performed to describe the cooling capacity of device under the forced air flow. The unit cell height effect on the cooling behavior was discussed to deduce the physical model for this heat convection device. These models were considered to be used in the computational fluid mechanics simulations.

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Section: Comparison Of the Cooling Capacity Among Four Specimens With...mentioning

confidence: 99%