Thermal performance of phase change material (PCM) based pin-finned heat sinks for electronics devices: Effect of pin thickness and PCM volume fraction

Arshad, Adeel; Ali, Hafız Muhammad; Ali, Muzaffar; Manzoor, S.

doi:10.1016/j.applthermaleng.2016.10.090

Cited by 279 publications

(68 citation statements)

References 23 publications

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“…In order to avoid heat loss to the ambient, the boundary of the shell is adiabatic. The ratio of the fin volume to the volume between the inner tube and shell holds constant with a value of 10% to achieve the optimal thermal enhancement . In this context, the amount of PCM in LHS units is identical for both the tree‐shaped fin case and wheel‐shaped fin case, which means the maximal energy charging or discharging capacity of LHS units in the present study is the same.…”

Section: Mathematical Modelsmentioning

confidence: 88%

Role of tree‐shaped fins in charging performance of a latent heat storage unit

Huang

Zhang

et al. 2020

Int J Energy Res

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Summary The performance enhancement of latent heat storage (LHS) units is of great consequence for the development of sustainable energy. In this article, the transient models of phase‐change heat transfer processes in LHS units with consideration of natural convection are developed and numerically analyzed, in an effort to explore the role of the fractal tree‐shaped fin in the energy charging performance. The solid‐liquid interface evolution and dynamic temperature response in the tree‐shaped finned LHS unit are presented and compared with the wheel‐shaped one. Moreover, the influence of the fin number is investigated for maximizing the energy charging performance. The results indicate that the tree‐shaped fin has merits of effective layout optimization for the point‐to‐area heat transfer and the time‐coordination of energy charging and discharging process. Compared with the wheel‐shaped fin, the melting duration time is decreased only a little for the presence of tree‐shaped fin, however, the solidification process is decreased significantly. The presence of tree‐shaped fin leads to a lower energy charging rate during the early and middle stages of the charging process due to the natural convection suppression, however, the energy charging rate is faster during the later stage due to the thermal conduction dominated interior heat transfer. For maximizing the melting performance, the appropriate fin number in practical applications is 16.

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Section: Mathematical Modelsmentioning

confidence: 88%

Role of tree‐shaped fins in charging performance of a latent heat storage unit

Huang

Zhang

et al. 2020

Int J Energy Res

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“…The lower thermal conductivity of OPCMs reduces the rate of heat transfer, which causes increase in temperature gradient and insensitivity to temperature changes across the system boundaries. OPCMs, with potential advantage as TES materials, are being developed for applications including air conditioning, ie, natural air cooling, cold thermal storage and absorption refrigeration, waste heat recovery, solar energy storage, thermal regulating fabric, passive heating of building, heat pipes, desalination, thermal management of electronic devices and electric vehicle batteries, spacecraft, and other integrated thermal control systems such as trombe wall, PCM‐filled wallboards, shutter, concrete, under floor heating systems, ceiling boards, and hot water supply . However, the leakage issue and lower thermal conductivity of OPCMs causes harm with interacting medium and results in energy efficiency losses of the thermal system.…”

Section: Introductionmentioning

confidence: 99%

The micro‐/nano‐PCMs for thermal energy storage systems: A state of art review

et al. 2019

Self Cite

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Summary With advancement in technology—nanotechnology, various thermal energy storage (TES) materials have been invented and modified with promising thermal transport properties. Solid‐liquid phase change materials (PCMs) have been extensively used as TES materials for various energy applications due to their highly favourable thermal properties. The class of PCMs, organic phase change materials (OPCMs), has more potential and advantages over inorganic phase change materials (IPCMs), having high phase change enthalpy. However, OPCMs possess low thermal conductivity as well as density and suffer leakage during the melting phase. The encapsulation technologies (ie, micro and nano) of PCMs, with organic and inorganic materials, have a tendency to enhance the thermal conductivity, effective heat transfer, and leakage issues as TES materials. The encapsulation of PCMs involves several technologies to develop at both micro and nano levels, called micro‐encapsulated PCMs (micro‐PCM) and nano‐encapsulated PCMs (nano‐PCM), respectively. This study covers a wide range of preparation methods, thermal and morphological characteristics, stability, applications, and future perspective of micro‐/nano‐PCMs as TES materials. The potential applications, such as solar‐to‐thermal and electrical‐to‐thermal conversions, thermal management, building, textile, foam, medical industry of micro‐ and nano‐PCMs, are reviewed critically. Finally, this review paper highlights the emerging future research paths of micro‐/nano‐PCMs for thermal energy storage.

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“…To store and release the latent thermal energy, lots kinds of resins are used to encapsulate the organic PCMs and prevent its leakage, such as high density polyethylene, silicone rubber, and polyethylene terephthalate [15][16][17]. However, these methods will increase the thermal resistance of PCMs.…”

Section: Introductionmentioning

confidence: 99%

Biomass derived carbon aerogel as an ultrastable skeleton of form-stable phase change materials for efficient thermal energy storage

Zou¹,

Wu²,

Wang³

et al. 2020

Mater. Res. Express

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Direct conversion of biomass to carbon aerogel provides a promising approach to developing supporting material for phase change materials (PCMs). In present work, carrot and pumpkin derived carbon aerogels (CCA and PCA) were fabricated via a hydrothermal and post-sintering process. N 2 adsorption-desorption isotherms were used to evaluate the specific surface area and pore distribution of the carbon aerogels. It showed that the carrot carbon aerogel sintered at 800°C (CCA800) possessed a specific surface area of 33.80 m 2 ·g −1 , which is separately 168%, 165%, and 287% higher than that of carrot carbon aerogel sintered at 1000°C (CCA1000, 12.59 m 2 ·g −1 ), pumpkin carbon aerogel sintered at 800°C (PCA800, 12.77 m 2 ·g −1 ), and pumpkin carbon aerogel sintered at 1000°C (PCA1000, 8.74 m 2 ·g −1 ). Owing to its porosity, the carbon aerogels with a high loading content of palmitic acid (PA)/thiol-ene resin (TE) composite as a PCM without leakage. A thermal conductivity enhancement of 60.5% was achieved by 50PA/TE@PCA1000 compared with 50PA/TE, and DSC result showed its latent heat of 88.26 J/g. The excellent properties of PCMs composites lead to a promising application foreground.

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Thermal performance of phase change material (PCM) based pin-finned heat sinks for electronics devices: Effect of pin thickness and PCM volume fraction

Cited by 279 publications

References 23 publications

Role of tree‐shaped fins in charging performance of a latent heat storage unit

Role of tree‐shaped fins in charging performance of a latent heat storage unit

The micro‐/nano‐PCMs for thermal energy storage systems: A state of art review

Biomass derived carbon aerogel as an ultrastable skeleton of form-stable phase change materials for efficient thermal energy storage

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