Investigation on the thermophysical properties and transient heat transfer characteristics of composite phase change materials

Chiu, Yu-Jen; Yan, Wei‐Mon; Chiu, Han-Chieh; Jang, Jer‐Huan; Ling, Guang-Ya

doi:10.1016/j.icheatmasstransfer.2018.09.011

Cited by 26 publications

(3 citation statements)

References 27 publications

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“…The measurement was taken according to the transient plane sources method (TPS-3500). Since paraffin has temperature-dependent for the thermophysical properties [39], then the measurement was conducted at three different temperatures: 40℃, 60℃ and 110℃. The temperature was determined by considering the initial crystalline change for paraffin at temperature of 40℃.…”

Section: Resultsmentioning

confidence: 99%

Evaluation on the Discharging Rate and State of Health of Paraffin/HDPE after 10,000 Thermal Cycling under Various Charging Speed

Suyitno¹,

Rahmalina²,

Ismail³

et al. 2023

IJHT

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Fast-charging mode thermal energy storage (TES) can be obtained by improving the average heat transfer rate of the system. However, it leads to the risk of performance deterioration for the long-term operation. The impact of charging rate for paraffin and FS-Paraffin (form-stable paraffin) is evaluated in the present work. The heating/cooling process is repeated for 10,000 cycles with different charging rate (1℃/min, 5℃/min and 10℃/min). The performance is focused on the discharging rate and thermal decomposition. It shows that the fast-mode treatment causes a severe deceleration in the discharging speed. The lowest discharging rate of paraffin is obtained at 0.64℃/min. The FS-Paraffin is generally better to withstand from thermal deterioration. It has a suitable discharging rate (0.82℃/min) with the lowest state of health (SoH) percentage of 97.3%. It implies that the presence of polymer additive (20 wt% high-density polyethylene) for FS-Paraffin reduces the impact of fast-charging operation. Further evaluations are discussed in the article, including the impact on SoH, thermal conductivity and storing performance. The overall condition indicates that thermal deterioration likely occurred during the fast-mode operation and requires extensive protection to maintain the long-term operation of the TES material.

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Section: Resultsmentioning

confidence: 99%

Evaluation on the Discharging Rate and State of Health of Paraffin/HDPE after 10,000 Thermal Cycling under Various Charging Speed

Suyitno¹,

Rahmalina²,

Ismail³

et al. 2023

IJHT

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show abstract

“…On the one hand, thermal effect may cause adverse impact on the reliability of sensors and even result in their function failure [1,2]; on the other hand, for common temperature-sensitive sensors, thermal effect can reduce the accuracy of their measurement results [3][4][5]. Mainly driven by complexity of application environment, reliability enhancement and implementation of high-accuracy measurement, the investigations of thermal properties of materials [6][7][8][9][10][11][12], thermal design, and control of sensor systems [13][14][15][16], as well as thermal compensation techniques [17,18], have been extensively carried out. It is worth noting that whether the evaluation of the adverse impacts on sensor systems and its measurement accuracy induced by thermal effect or developments of the methods and techniques to eliminate such adverse impacts, it is critical to understand the heat transfer and temperature characteristics of these sensors [11,12,14,[19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer and Temperature Characteristics of a Working Digital Camera

Zhou

Zhu²,

et al. 2020

Sensors

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Digital cameras represented by industrial cameras are widely used as image acquisition sensors in the field of image-based mechanics measurement, and their thermal effect inevitably induces thermal-induced errors of the mechanics measurement. To deeply understand the errors, the research for digital camera’s thermal effect is necessary. This study systematically investigated the heat transfer processes and temperature characteristics of a working digital camera. Concretely, based on the temperature distribution of a typical working digital camera, the heat transfer of the working digital camera was investigated, and a model describing the temperature variation and distribution was presented and verified experimentally. With this model, the thermal equilibrium time and thermal equilibrium temperature of the camera system were calculated. Then, the influences of thermal parameters of digital camera and environmental temperature on the temperature characteristics of working digital camera were simulated and experimentally investigated. The theory analysis and experimental results demonstrate that the presented model can accurately describe the temperature characteristics and further calculate the thermal equilibrium state of working digital camera, all of which contribute to guiding mechanics measurement and thermal design based on such camera sensors.

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“…However, they possess the low thermal conductivity especially organic PCMs [13]. Various strategies have been proposed to enhance the thermal conductivity of the PCM such as metallic fins [14,15,16,17,18,19,20,21], metallic foams [22,23,24,25], and nanoparticles [26,27,28,29,30,31] as thermal conductivity enhancers (TCEs) and micro/nano-encapsulation of PCMs [13,32,33,34,35]. Qu et al [22] conducted the numerical study for passive thermal management of high-power Li-ion battery using porous metal-foam with PCM.…”

mentioning

confidence: 99%

Thermal process enhancement of HNCPCM filled heat sink: Effect of hybrid nanoparticles ratio and shape

Arshad

Jabbal

Faraji

et al. 2021

International Communications in Heat and Mass Transfer

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Investigation on the thermophysical properties and transient heat transfer characteristics of composite phase change materials

Cited by 26 publications

References 27 publications

Evaluation on the Discharging Rate and State of Health of Paraffin/HDPE after 10,000 Thermal Cycling under Various Charging Speed

Evaluation on the Discharging Rate and State of Health of Paraffin/HDPE after 10,000 Thermal Cycling under Various Charging Speed

Heat Transfer and Temperature Characteristics of a Working Digital Camera

Thermal process enhancement of HNCPCM filled heat sink: Effect of hybrid nanoparticles ratio and shape

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