Review on nanoencapsulated phase change materials: Preparation, characterization and heat transfer enhancement

Liu, Chenzhen; Rao, Zhonghao; Zhao, Jiateng; Huo, Yujia; Li, Yimin

doi:10.1016/j.nanoen.2015.02.016

Cited by 394 publications

(127 citation statements)

References 96 publications

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“…Different kinds of physical properties like adhesion forces, Van der Waals interactions, capillary actions, and surface chemistries are more effective at the nanoscale of confinement. For that reason, nano‐confinement technology has proven to more valuable than macro‐ and micro‐confinement . Additionally, nano‐confinement provides better heat transfer, and accommodates dimensional changes related with the phase transition of PCMs.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

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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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Section: Introductionmentioning

confidence: 99%

“…To date, a few studies have summarised the progress on preparation of micro‐PCMs and nano‐PCMs . However, this review critically summarises research in the area of novel energy storage materials for the applications of TES systems.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

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“…Phase change microcapsule (MicroEPCM) technology is a method of encapsulating PCM particles in a stable shell material to form micron‐sized particles with a shell‐core structure . The current microcapsule encapsulation technology can be mainly divided into physical methods, physical and chemical methods, and chemical methods . Physical and chemical methods and chemical methods are widely used in the field of phase change energy storage .…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of n‐Nonadecane/CaCO₃ Microencapsulated Phase Change Material for Thermal Energy Storage

2019

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A novel microencapsuled thermal energy storage phase change material (MicroEPCM) based on n‐nonadecane core and CaCO3 shell were synthesized via a self‐assembly method. The chemical structure, surface morphology and thermal properties of the MicroEPCM were investigated by X‐ray diffractometer (XRD), Fourier‐transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetric analyzer (TGA), respectively. The effects of core/shell mass ratios, stirring speed, temperature and emulsifier concentration on the morphology and thermal properties of the MicroEPCM were investigated to confirm the most suitable CaCO3‐encapsulated n‐nonadecane reaction conditions. The results showed that the optimal spherical morphology and the highest latent heat were obtained when the stirring rate is 800 rpm, the temperature is 45 °C, the emulsifier concentration is 15 mmol/L and the core/shell mass ratio is 3:1. The latent heat and encapsulation rate of MicroEPCM as above‐mentioned are 134.83 J/g and 59.68%, respectively. The thermal conductivity of MicroEPCM is improved up to 3.56 times than that of prinstine n‐nonadecane. The MicroEPCM did not leak after being heated at 80 °C for 20 h, which proves that the CaCO3 shell is compact. The MicroEPCM present a good thermal stability after 200 thermal cycling. The MicroEPCM also has been proved to maintain high mechanical strength.

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“…Moreover, a literature survey indicates that some attempts have recently been made to improve the thermal conductivity of microcapsules by packaging organic alkanes PCMs into inorganic shells [22][23][24][25]. Pan et al [26] encapsulated palmitic acid with aluminum hydroxide (AlOOH) shell and found that these micro-PCMs achieved much higher thermal conductivity than pristine palmitic acid.…”

Section: Introductionmentioning

confidence: 99%

Microencapsulation of phase change materials with binary cores and calcium carbonate shell for thermal energy storage

et al. 2016

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Review on nanoencapsulated phase change materials: Preparation, characterization and heat transfer enhancement

Cited by 394 publications

References 96 publications

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

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

Preparation and Characterization of n‐Nonadecane/CaCO₃ Microencapsulated Phase Change Material for Thermal Energy Storage

Microencapsulation of phase change materials with binary cores and calcium carbonate shell for thermal energy storage

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Review on nanoencapsulated phase change materials: Preparation, characterization and heat transfer enhancement

Cited by 394 publications

References 96 publications

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

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

Preparation and Characterization of n‐Nonadecane/CaCO3 Microencapsulated Phase Change Material for Thermal Energy Storage

Microencapsulation of phase change materials with binary cores and calcium carbonate shell for thermal energy storage

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Preparation and Characterization of n‐Nonadecane/CaCO₃ Microencapsulated Phase Change Material for Thermal Energy Storage