Abstract. A new method is proposed to fabricate high-performance phase change material capsules with high thermal storage capacity and increased thermal conductivity. The capsules are achieved by free radical polymerization against the example paraffin/water emulsions stabilized with Janus particles (JPs).
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In this paper, the thermal energy storage characteristics of a packed bed thermal energy storage device (PBTESD) filled with spherical phase change capsules are analyzed. The PA/EG/CF composite phase change material (CPCM) was used as an encapsulation material, and water was used as heat transfer fluid (HTF).
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This paper mainly deals with the charging processes of a cylindrical heat storage capsule filled with stearic acid, sliced paraffin and lauric acid as phase-change materials (PCMs). Experimental results demonstrate that, compared to the capsule with a single PCM, the charging rate of the capsule employing three PCMs is enhanced …
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Nevertheless, thermal energy storage performances are still limited, necessitating the design of unique PCMs capsules to achieve rapid thermal energy storage. Through billions of years of evolution, bio-structures in organisms offer insights to tackle complex engineering and science problems [31].
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Figure 1. Phase change material (PCM) thermal storage behavior under transient heat loads. (A) Conceptual PCM phase diagram showing temperature as a function of stored energy including sensible heat and latent heat (Δ H) during phase transition. The solidification temperature ( Ts) is lower than the melting temperature ( Tm) due to …
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A theoretical and experimental investigation of the transient thermal characteristics of a phase-change thermal energy storage (TES) unit using spherical capsules is presented. A simulation program that considers rigorously transient aspects of both the surrounding heat transfer fluid and the phase change material (PCM) packed inside the spherical capsule …
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The melting behaviors in each phase change material capsule are synchronous due to the excellent heat transfer capacity of the latent thermal energy storage unit. With the increasing initial temperature of the latent thermal energy storage unit, the duration of the charging process varies little, but the total heat storage capacity of the …
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Phase change materials (PCMs) are gaining increasing attention and becoming popular in the thermal energy storage field. Microcapsules enhance thermal …
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Most related items These are the items that most often cite the same works as this one and are cited by the same works as this one. Liu, Yang & Zheng, Ruowei & Li, Ji, 2022. "High latent heat phase change materials (PCMs) with low melting temperature for thermal management and storage of electronic devices and power batteries: Critical review," …
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The phenomenon of the phase change that takes place inside the PCM capsules of the latent heat thermal energy storage system in solar thermal applications is the interest of this research work. The paraffins are mostly used as PCMs, due to their easy availability and due to their suitable thermal characteristics, in low temperature …
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The use of a latent heat storage system using phase change materials (PCMs) is an effective way of storing thermal energy and has the advantages of high …
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Abstract. Latent heat storage system utilizing a packed-bed setup with encapsulated phase change materials (EPCMs) can address the issues of mismatched …
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ND was firstly incorporated into NEPCM for efficient solar energy utilization. • The phase change nanocapsules exhibit a high thermal conductivity of 0.747 W/m·K. • The nanocapsules present exceptional latent heat and leak-proof performance. • The photothermal
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Constrained melting heat transfer of a phase change material (PCM) in a circumferentially finned spherical capsule was studied with application to latent heat thermal energy storage (TES). Attention was paid primarily to revealing the influence of fin height on melting heat transfer and TES performance of the PCM system.
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Thermal energy storage in general, and phase change materials (PCMs) in particular, have been a main topic in research for the last 20 years, but although the information is ...
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PCMs can absorb or release thermal energy during phase transition with no temperature variation [1]. In general, they demonstrate high latent-heat capacities, energy storage densities, and fusion enthalpies, …
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An experimental and numerical investigation of constrained melting heat transfer of a phase change material in a circumferentially finned spherical capsule for thermal energy storage Appl. Therm. Eng., 100 ( 2016 ), pp. 1063 - 1075
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Development of affordable thermal energy storage (TES) has been hampered by the lack of environmentally benign and scalable phase-change materials (PCM). Here we show size-controlled colloidal synthesis of fatty acid-lignin hybrid nanocapsules and demonstrate their applicability as PCM in dry and wet states.
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The encapsulation efficiency and phase change performances of capsules are investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results show that the photo/thermal energy-storage capsules with spherical shape are successfully prepared.
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This paper presents a numerical study of encapsulated phase change material (PCM) energy storage systems consisting of a single capsule or multiple capsules with different arrangements. A numerical model is developed for predicting the melting characteristics of encapsulated PCM with circular geometry, subjected to the flow …
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Encapsulated phase change materials (PCM) are an interesting high energy density solution to store thermal energy near isothermal conditions. They are generally used in a packed bed latent heat storage system, consisting of a storage medium divided into small encapsulated particles which increase the specific surface area …
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Fig. 9 exhibits an example of the effective energy storage ratio comparison when the superficial velocity is 0.00340 m/s and the aspect ratio of the tank L / D for both shell-and-tube and packed bed unit is 12. The effective thermal conductivity was kept as 0.5 W/ (m ∙ K) for the packed bed unit.
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The phase change materials (PCM), as the key of phase change energy storage technology, are widely used in heat recovery due to their excellent LHS capabilities [6][7] [8].
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Phase change material capsule provides greater thermal energy storage. An EU-funded project has developed a viable macro-encapsulation solution that acts with phase change materials (PCMs) to …
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In order to enhance the thermal performance of latent heat storage, bionic-conch phase change capsules and bionic-mitochondrial phase change capsules were proposed in this study. The effects of different structure types (bionic-mitochondrial, bionic-conch, straight-fin, and finless) of the PCMs on the melting characteristics were …
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Latent-heat thermal energy storage technology possesses advantages such as compact heat storage volume, high energy storage density, and a wide temperature range [5], making it a promising approach. Plentiful theoretical, numerical and experimental investigations have been conducted by scholars concerning the phase …
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Figure 5 presents the results for a heating rate of/3 = 10 h 1, a final temperature 0e = 5.0, and flowrate of 1.1 m3 h-I, for different locations indicated on the scheme nearby. Phase-change thermal energy storage using spherical capsules 1 91 10 …
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The objective of this work is the numerical study of an industrial process of energy storage which consists in the use of a cylindrical tank filled with encapsulated phase change materials (PCM). A particularity is present in this kind of processes; it concerns the delay of the crystallization of the PCM, called supercooling phenomenon.
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Scientific Reports - Microencapsulation of Metal-based Phase Change Material for High-temperature Thermal Energy Storage Skip to main content Thank you for visiting nature .
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