Experimental determination of temperature-dependent thermal conductivity of solid eicosane-based silver nanostructure-enhanced phase change materials for thermal energy storage

Ghossein, Rabih M. Al; Hossain, Mohammad Sharif; Khodadadi, J. M.

doi:10.1016/j.ijheatmasstransfer.2016.11.059

Cited by 96 publications

(29 citation statements)

References 22 publications

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“…13 However, similar to other organic PCMs, fatty acids possess relatively low thermal conductivity that seriously limit their utilization in LHTES. To enhance the heat conduction of PCMs, the addition of materials with high thermal conductivity such as metal particles, [14][15][16] fins, [17][18][19] foam metal, [20][21][22] and carbon materials 12,[23][24][25][26][27][28][29] is typically performed. Among the additives, carbon materials possess much lower densities, which can reduce the energy storage density losses during LHTES.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance of stearic acid/carbon nanotube composite phase change materials for energy storage prepared by ball milling

Zhang

Yuan

et al. 2018

Int J Energy Res

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Summary In this work, stearic acid/carbon nanotubes composite phase change materials (SA/CNTs composite PCMs) were fabricated by ball milling for the first time to enhance the heat conduction of SA and prevent the delamination of SA and CNTs components. The results of suspension stability study conducted using a gravity sedimentation method showed that polyvinylpyrrolidone (PVP) used as dispersant has the best effect on the stability of composite PCMs. Then, the thermal cycling test further proved the stability of prepared composite. The SEM and FT‐IR results revealed that ball milling led to the formation of highly homogeneous composites. The thermal properties of the fabricated SA/CNTs composites with CNTs contents of 2, 6, and 10 wt.% characterized by differential scanning calorimetry (DSC) demonstrated that their phase change temperatures varied slightly while the latent heat decreased with the increased CNTs content. Furthermore, the thermal conductivity of the SA/CNTs composites were greater than that of pure SA by 61.5%, 92.3%, and 119.2%, respectively. The addition of CNTs also increased the thermal release rates of the prepared PCMs and decreased their storage rates. Therefore, the produced materials can be potentially used in thermal management.

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Section: Introductionmentioning

confidence: 99%

Thermal performance of stearic acid/carbon nanotube composite phase change materials for energy storage prepared by ball milling

Zhang

Yuan

et al. 2018

Int J Energy Res

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“…With the reduction in the fossil fuels and increase in the energy demand, it has become necessary to store thermal energy to meet the energy demands and to create a balance between energy demand and supply [1,2]. As the fossil fuels are depleting gradually there is a need to shift towards renewable energy resources to fulfill the energy [3,4] As the energy output of renewable energy resources is very uncertain therefore, we need to create the thermal energy storage (TES) system to save the energy for later use. The designed TES should have high storage capacity and it should be economical and efficient [5].…”

Section: Introductionmentioning

confidence: 99%

“…3B, pp. -2169 high reliability [3,[7][8][9]. The PCM can store thermal energy as latent heat [10] of vaporization (liquid to vapor conversion) or latent heat of fusion (solid to liquid conversion), however, nowadays heat of fusion is mainly used [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Thermal applications of hybrid phase change materials: A critical review

2020

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Phase change materials (PCM) with their high latent heat capacity have a great ability to store energy during their phase change process. The PCM are renowned for their applications in solar and thermal energy storage systems for the purpose of heating and cooling. However, one of the major drawbacks of PCM is their low thermal conductivity due to which their charging and discharging time reduces along with the reduction in energy storage capacity. This reduction in the energy storage capacity of PCM can be improved by producing organic-inorganic hybrid form-stable PCM, with the combination of two or more PCM together to increase their energy storage capacity. Nanoparticles that possess high thermal conductivity are also doped with these hybrid PCM (HPCM)to improve the effectiveness of thermal conductivity. This paper presents a short review on the applications of HPCM in energy storage and building application. Apart from this a short section of applications of composite PCM (CPCM) is also reviewed with discussions made at the end of each section. Results from the past literature depicted that the application of these HPCM and CPCM enhanced the energy storage capacity and thermal conductivity of the base PCM and selection of a proper hybrid material plays an essential role in their stability. It is presumed that this study will provide a sagacity, to the readers, to investigate their thermophysical properties and other essential applications.

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“…29 The other way is to disperse thermal conductive fillers into PCMs. The reported thermal conductive fillers include metal nanowires, [30][31][32] carbon nanotubes, 33 expanded graphite nanoplatelets 15,34 , graphene 35 and nanoparticles 36 etc. For polymer-based form-stable PCMs, thermal conductive fillers are preferred because they can be easily dispersed in to the form-stable PCMs.…”

Section: Introductionmentioning

confidence: 99%

“…2 Thermal conductivity of PCMs can be improved in two ways. The reported thermal conductive fillers include metal nanowires, 30-32 carbon nanotubes, 33 expanded graphite nanoplatelets 15,34 , graphene 35 and nanoparticles 36 etc. 29 The other way is to disperse thermal conductive fillers into PCMs.…”

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confidence: 99%

Preparation and characterization of erythritol/polyaniline form‐stable phase change materials containing silver nanowires

et al. 2019

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Summary Sugar alcohols are promising solid‐liquid phase change materials (PCMs). However, problems such as possible leakage of liquid PCMs, high and unstable supercooling, and low thermal conductivity need to be solved. In this work, a novel form‐stable PCM in which m‐erythritol (ME), polyaniline (PANI), and silver nanowires (Ag NWs) were applied as solid‐liquid PCM, supporting material, and thermal conductive filler, respectively, was successfully prepared in anhydrous ethanol by surface polymerization of aniline. Form‐stable PCM with good form stability could be obtained when the ratio of ME/(aniline + ME) was no more than 78.7 wt%. The melting enthalpy (ΔHm) of the ME/PANI form‐stable PCMs could attain 234.8 J/g while that of the ME/PANI/Ag NWs form‐stable PCMs was about 220 J/g. In addition, the thermal conductivity of the form‐stable PCM was increased by 61.6% when 7.5 wt% Ag NW was added. Moreover, the supercooling of ME was effectively suppressed from 100°C for pure ME to 60°C, corresponding to an improvement of 40%, for the form‐stable PCM containing 7.5 wt% Ag NWs. The supercooling suppression could be ascribed to that PANI provided great amounts of nucleating centers and improved the nucleation kinetics, and Ag NWs improved the thermal diffusivity and thus increased the crystallization rate.

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Experimental determination of temperature-dependent thermal conductivity of solid eicosane-based silver nanostructure-enhanced phase change materials for thermal energy storage

Cited by 96 publications

References 22 publications

Thermal performance of stearic acid/carbon nanotube composite phase change materials for energy storage prepared by ball milling

Thermal performance of stearic acid/carbon nanotube composite phase change materials for energy storage prepared by ball milling

Thermal applications of hybrid phase change materials: A critical review

Preparation and characterization of erythritol/polyaniline form‐stable phase change materials containing silver nanowires

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