A review of heat pipe technology for foldable electronic devices

Gibbons, Michael; Marengo, Marco; Persoons, Tim

doi:10.1016/j.applthermaleng.2021.117087

Cited by 77 publications

(15 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Introductionmentioning

confidence: 99%

“…The purpose of thermoregulating design is to influence the temperature of an object by adjusting heat transfer, including enhanced heat dissipation and suppressed heat loss, to improve the object's thermal environment. [16][17][18] For heat dissipation, materials of high thermal conductivity can swiftly dissipate the Joule heat generated by functional electronics. [19][20][21] As an alternative way to prevent high temperatures, phase change materials (PCM) such as paraffin are used to regulate temperature near the phase change temperature point.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wide‐temperature range thermoregulating e‐skin design through a hybrid structure of flexible thermoelectric devices and phase change materials heat sink

Zhang

Deng

Zhu

et al. 2022

EcoMat

View full text Add to dashboard Cite

The realization of the thermoregulating function of electronic skin (e-skin) by simulating the human temperature perception system can greatly improve the intelligence of the e-skin. Here, we report a thermoregulating e-skin that fits on the surface of a prosthetic limb based on a hybrid structure consisting of a flexible thermoelectric device and a phase-change heat sink. The hybrid e-skin possesses outstanding temperature adaptability similar to that of the human body; it can maintain the surface temperature at 35 C in environmental temperatures ranging from 10 to 45 C. The power expenditure of the e-skin is essentially the same as the energy required by the human body to regulate temperature and is only 14.22 mW cm À2 in the thermoneutral zone. Thermoregulation based on this e-skin can greatly improve the temperature distribution of the target surface, providing a promising solution for the biomimetic thermoregulation of robots and the next generation of intelligent prostheses.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wide‐temperature range thermoregulating e‐skin design through a hybrid structure of flexible thermoelectric devices and phase change materials heat sink

Zhang

Deng

Zhu

et al. 2022

EcoMat

View full text Add to dashboard Cite

show abstract

“…To better control the thermal durability of electronic components without any electrical power input, passive thermal management systems can be the alternative solution. Some of the potential options cover a large variety of heat sinks, 4,5 heat spreaders, 6,7 heat pipes, [8][9][10][11][12] as well as thermal interface materials [13][14][15][16] which are recognized as some of the most preferred passive thermal management methods. Kothari et al 17 experimentally investigated the thermal performance of various phase change material (PCM)-based heat sinks particularly for portable electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation and performance evaluation of thermal energy management arrangements for robots

Sevinchan

Dinçer

Lang

2022

Energy Science & Engineering

View full text Add to dashboard Cite

In this study, thermal energy management systems with the choices of three different thermal insulating materials are experimentally investigated for robotic applications. These insulating materials are stone wool, fiberglass and extruded polyurethane with air cooling and heating system which are evaluated in the low and high temperature environments to really assess the thermal behavior and performance in such extreme ambient conditions. In this regard, thermodynamic and heat transfer modeling studies are undertaken to investigate various performance parameters, including energy and exergy efficiencies. The experimental results showed that energy efficiencies of the thermal management methods are obtained 46.34% for stone wool, 31.15% for fiberglass, and 44.3% for air cooling system at 40°C. Moreover, the exergy efficiencies are 12.6% for stone wool, 15.08% for fiberglass, 18.91% for extruded polyurethane, and 3.86% for air cooling system.

show abstract

“…The heat pipe is a two-phase passive heat transfer device, and up to now, many types of heat pipes have been developed as reviewed by Faghri (2012), Chen et al (2016), Han et al (2016), Blet et al (2017), Nazari et al (2018), Tang et al (2018) and Gibbons et al (2021). A two-phase loop thermosyphon is one of them, and this is a gravityassisted wickless heat pipe.…”

Section: Introductionmentioning

confidence: 99%

Operational characteristics of a JEST-type loop thermosyphon with HFE working fluid (Effect of initial liquid level)

Koito

Mäki

Suzuki

et al. 2022

JTST

View full text Add to dashboard Cite

An experiment study was conducted on the operational characteristics of the JEST-type loop thermosyphon when an initial liquid level of a working fluid was lowered. This thermosyphon was invented in 2012 by one of the authors with a jet explosion stream technology (JEST) for cooling high-heat-generation and high-heatflux CPUs. The present experiment aims at lowering the height of the thermosyphon for rack-level thermal management in a datacenter. Hydrofluoroether (HFE)-7000 was used as the working fluid. In experiment, an evaporator section of the thermosyphon was heated with a heating block while a condenser section was watercooled using a thermostatic bath. Temporal changes in temperatures of the thermosyphon were obtained with thermocouples. Moreover, the circulation flow rate of the working fluid in the thermosyphon was obtained with a simple measurement method. The initial liquid level of the working fluid was changed as 166, 268, 368 mm while the height of the thermosyphon was 1200 mm. Experimental results are shown regarding the effect of the initial liquid level on the circulation flow rates of the vapor and liquid phases of the working fluid as well as the heat transfer coefficient at the evaporator section. An additional experiment was also conducted when the height of the thermosyphon was lowered from 1200 mm to 480 mm. It was confirmed that the thermal performance of the thermosyphon decreased when the initial liquid level was lowered; however, the thermal performance was recovered by lowering the height of the thermosyphon. Therefore, the JEST-type loop thermosyphon can be applied to the rack-level thermal management in a datacenter.

show abstract

A review of heat pipe technology for foldable electronic devices

Cited by 77 publications

References 73 publications

Wide‐temperature range thermoregulating e‐skin design through a hybrid structure of flexible thermoelectric devices and phase change materials heat sink

Wide‐temperature range thermoregulating e‐skin design through a hybrid structure of flexible thermoelectric devices and phase change materials heat sink

Experimental investigation and performance evaluation of thermal energy management arrangements for robots

Operational characteristics of a JEST-type loop thermosyphon with HFE working fluid (Effect of initial liquid level)

Contact Info

Product

Resources

About