Emerging Applications of Phase‐Change Materials (PCMs): Teaching an Old Dog New Tricks

Hyun, Dong Choon; Levinson, Nathanael S.; Jeong, Unyong; Xia, Younan

doi:10.1002/anie.201305201

Cited by 306 publications

(195 citation statements)

References 113 publications

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“…This results in much higher energy densities than commonly used sensible heat thermal storage systems and in turn leads to both material and space savings. [1][2][3] For instance, the latent heat of ice is equivalent to 80 degrees of sensible heat in water.…”

mentioning

confidence: 99%

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Metal Matrix–Metal Nanoparticle Composites with Tunable Melting Temperature and High Thermal Conductivity for Phase-Change Thermal Storage

Liu

Hao

et al. 2015

ACS Nano

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Abstract:Phase change materials (PCMs) are of broad interest for thermal storage and management applications. For energy dense storage with fast thermal charging/discharging rates, a PCM should have a suitable melting temperature, large enthalpy of fusion, and high thermal conductivity. To simultaneously accomplish these traits, we custom design nanocomposites consisting of phase change Bi nanoparticles embedded in an Ag matrix. We precisely control nanoparticle size, shape, and volume fraction in the composite by separating the nanoparticle

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mentioning

confidence: 99%

“…poor gravimetric energy density). 1,14 While gravimetric energy density is important for mobile applications, many thermal storage applications are stationary, and in these cases volumetric energy density is of more importance.…”

mentioning

confidence: 99%

Metal Matrix–Metal Nanoparticle Composites with Tunable Melting Temperature and High Thermal Conductivity for Phase-Change Thermal Storage

Liu

Hao

et al. 2015

ACS Nano

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“…As a consequence, transitions from solid to liquid and from liquid to vapour have high transition heats involved, but for practical applications, the large difference in volume between liquid and vapour is a problem (a short discussion and further references can be found in Reference [1]). Therefore, attention has been focussed at the solid-liquid transition [1,3,4], and to a lesser extent at solid-solid transitions [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…All of these categories have their specific advantages and disadvantages, and books and reviews give systematic overviews of these [1,3,4,[9][10][11][12][13]. The use of ice as a material for cold storage is an age-old and common example of PCM use [14].…”

Section: Introductionmentioning

confidence: 99%

A new calorimetric technique for phase change materials and its application to alkane-based PCMs

Duponchel

Longuemart

Glorieux

et al. 2016

Mater Renew Sustain Energy

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The correct determination of the phase transition behaviour of phase change materials (PCMs) is paramount for assessing their application potential. In this work, the merits of a novel calorimetric technique, Peltierelement-based adiabatic scanning calorimetry (pASC), for PCM characterisation are investigated, especially in comparison with the commonly-used differential scanning calorimeter (DSC). A comparative study of two alkanebased PCMs, the commercial mixture RT42 and the pure alkane tricosane (C23) with these two techniques shows that pASC provides data at much higher resolution than DSC, due to its operation in thermodynamic equilibrium. Specifically the rate-dependence and deformation that is inherent to DSC experiments is absent in pASC. In addition, the enthalpy of the PCM is directly obtained. pASC results easily conform to the accuracy limits that are proposed in literature for the transition temperature and storage capacity of PCMs.

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“…10,18,36,37 In our previous study, we adopted CNT-reinforced GO hybrids as shell materials to encapsulate the alkane-type PCMs. 16 The correlation between the C-H···π interaction and the thermal properties of MPCMs has been investigated, with a pronounced C-H···π interaction leading to stable encapsulation and fast thermal diffusivity.…”

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confidence: 99%

Microencapsulated Phase Change Materials in Solar-Thermal Conversion Systems: Understanding Geometry-Dependent Heating Efficiency and System Reliability

et al. 2016

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The performance of solar-thermal conversion systems can be improved by incorporation of nanocarbon-stabilized microencapsulated phase change materials (MPCMs). The geometry of MPCMs in the microcapsules plays an important role for improving their heating efficiency andreliability. Yet few efforts have been made to critically examine the formation mechanism of different geometries and their effect on MPCMs-shell interaction. Herein, through changing the cooling rate of original emulsions, we acquire MPCMs within the nanocarbon microcapsules with a hollow structure of MPCMs (h-MPCMs) or solid PCM core particles (s-MPCMs). X-ray photoelectron spectroscopy and atomic force microscopy reveals that the capsule shell of the hMPCMs are enriched with nanocarbons and have a greater MPCMs-shell interaction compared to s-MPCMs. This results in the h-MPCMs being more stable and having greater heat diffusivity within and above the phase transition range than the s-MPCMs do. The geometry-dependent heating efficiency and system stability may have important and general implications for the fundamental understanding of microencapsulation and wider breadth of heating generating systems.3 Solar-thermal conversion, where solar irradiation is harvested and converted to heat for beneficial usage, has gained renewed interest in the past decade and made it a special asset in energy conversions due to its operational simplicity and high energy conversion efficiency. [1][2][3][4] Microencapsulated phase change materials (MPCMs, 1-100 µm diameter), often considered unique micrometer-scaled composites with a superior performance of latent heat thermal storage as compared with bulk PCMs, are currently emerging as positive additives/dopants to the solarthermal conversion systems. Nanocarbon-stabilized MPCMs are of particular interest as they combine the advantages of nanocarbons for their outstanding energy conversion/transfer performance, [5][6][7] MPCMs with an accelerated heat storage/release due to a relatively high surfacearea-to-volume ratio [8][9][10][11][12][13] and the PCM-nanocarbon interactions which often fosters an enhanced enthalpy and better crystallinity. 14,15 A new avenue is therefore opening to enhance the heatgenerating efficiency at a output temperature within and even higher than the solid-liquid phasetransition range (PTR). [16][17][18] By constantly storing and retracting latent heat, 19 the MPCMs are expected to maintain the dynamic equilibrium of output temperatures when the surrounding temperature is around the PTR. More attractively, since the liquid PCMs above PTR store a higher accumulative energy (latent heat + sensible heat) but exhibit a much lower specific heat capacity than the PCMs within PTR, 20,21 the temperatures of PCMs and heat-generating structures would increase synchronously. [22][23][24][25][26][27][28] Consequently, a higher energy storage capacity will be achieved; 17 meanwhile, more heat will be emitted from the MPCMs above PTR to eliminate the convective heat dissipation in the heat-gen...

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Emerging Applications of Phase‐Change Materials (PCMs): Teaching an Old Dog New Tricks

Cited by 306 publications

References 113 publications

Metal Matrix–Metal Nanoparticle Composites with Tunable Melting Temperature and High Thermal Conductivity for Phase-Change Thermal Storage

Metal Matrix–Metal Nanoparticle Composites with Tunable Melting Temperature and High Thermal Conductivity for Phase-Change Thermal Storage

A new calorimetric technique for phase change materials and its application to alkane-based PCMs

Microencapsulated Phase Change Materials in Solar-Thermal Conversion Systems: Understanding Geometry-Dependent Heating Efficiency and System Reliability

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