Heat Transfer of Heat Sinking Vest with Phase-change Material

Qiu, Yifen; Jiang, Nan; Wu, Wei; Zhang, Guangwei; Xiao, Baoliang

doi:10.1016/s1000-9361(11)60084-8

Cited by 17 publications

(2 citation statements)

References 5 publications

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“…and a heat exchanger are required for active-cooling systems. Miniaturizing these components is a challenging task which not only reduces the bulkiness of such garments but also increases the cooling efficiency [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Wearable Bio-Inspired Pulsating-Flow Cooling for Live Garments Based on a Novel Design of Ferrofluid Micro-Valve

Tang

Luk

2022

Energies

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Temperature-related frustrations, such as heat exhaustion, heat stroke, hypothermia, and frost damage, are some of the most prevalent health risks encountered by humans. The aggravation may be lethal for individuals who reside or work in conditions of protracted and high temperature. Temperature-control technologies, such as underfloor heating and air conditioners, have been studied and applied to give individuals with a pleasant and, more crucially, an endurable temperature. However, it may be challenging to install these technologies in an exterior or enclosed space. In addition, they are inflexible for individual requirements, such as mobility and personal-temperature management. A wearable bio-inspired pulsing-flow (discontinuous) cooling system, which can significantly enhance cooling performance, is proposed in this work. The proposed system is implemented with valves to generate pulsating flows. Given that traditional mechanical-valve actuation systems continue to face limits in terms of switching frequency, interface wear loss, and size limitations for wearable-garment applications, a ferrofluid-based shape-controllable micro-valve is proposed to reduce the size and weight of the cooling system. An empirical approach is adopted to avoid the extensive computational simulation of the thermo fluidic dynamics involved, so that efforts can be focused on the design of an innovative scaled prototype built from ferrofluid valves positioned in a specific array of the cooling tubes. This allows the performance of continuous and pulsating cooling-flow systems to be compared on the same flow rate baseline. The results demonstrate that the proposed technology not only delivers superior cooling efficiency, but also has the potential to provide individualized temperature regulation in a “live” garment.

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Section: Introductionmentioning

confidence: 99%

Wearable Bio-Inspired Pulsating-Flow Cooling for Live Garments Based on a Novel Design of Ferrofluid Micro-Valve

Tang

Luk

2022

Energies

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“…Their results demonstrated that the battery temperature was well controlled under the safe temperature range. Qiu et al [20] investigate the thermal protection effects of PCM-based heat sinking vest which can regulate the temperature of human body in various thermal conditions. A hybrid heat sink with plate fin immersing in PCM was fabricated in [21] for the suppression of temperature excursion when starting a demagnetized induction motor.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the thermal control effects of phase change material based packaging strategy for on-board permanent magnet synchronous motors

Wang

et al. 2016

Energy Conversion and Management

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Thermal protective performance of firefighting protective clothing incorporated with phase change material in fire environments

Wang

Ruoying

et al. 2020

Fire and Materials

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Summary Phase change materials (PCMs) can optimize the thermal properties of fabric. Twelve kinds of microencapsulated phase change materials were selected, including four different phase change temperatures and three different content gradients. Twelve kinds of PCM‐coated fabrics were prepared by dry coating, and their basic physical properties were tested. The PCM‐coated fabric was added to the thermal protective fabric system as a comfortable layer. The thermal protective performance of the fabric system under two conditions of low‐level thermal radiation and fire exposure was analyzed through second‐degree burn time. The results showed that the incorporation of PCMs greatly improved the thermal protective performance of the fabric system under the low‐level thermal radiation, which was affected by the content, phase change temperature, mass per unit area and thermophysical properties of the coated fabric. In addition, the coated fabric by the PCMs was proved to be suitable for the condition of fire exposure, and greatly increased the thermal protective performance of the fabric system. The coated fabric with phase change temperature of 35°C and content of 45% showed the best thermal protective performance under both low‐level thermal radiation and fire exposure conditions.

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Heat Transfer of Heat Sinking Vest with Phase-change Material

Cited by 17 publications

References 5 publications

Wearable Bio-Inspired Pulsating-Flow Cooling for Live Garments Based on a Novel Design of Ferrofluid Micro-Valve

Wearable Bio-Inspired Pulsating-Flow Cooling for Live Garments Based on a Novel Design of Ferrofluid Micro-Valve

Experimental investigation of the thermal control effects of phase change material based packaging strategy for on-board permanent magnet synchronous motors

Thermal protective performance of firefighting protective clothing incorporated with phase change material in fire environments

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