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Preparation and characterization of phase change microcapsule emulsion for thermal energy storage and transportation. Author links open overlay panel S. Li burgeoning researches on energy storage and utilization are being carried out [[1], [2]–3]. Energy storage technologies mainly contain three aspects including sensible heat
A novel phase-change composites based on silicone rubber (MVQ) containing n-octadecane/poly (styrene-methyl methacrylate) microcapsules were successfully obtained by mixing energy-storage microcapsules into MVQ matrix using three preparation methods.The effect of microcapsules content on thermal property of the
Performances of microcapsule phase change material (MPCM) for thermal energy storage are investigated. The MPCM for thermal energy storage is prepared by a complex coacervation method with gelatin and acacia as wall materials and paraffin as core material in an emulsion system. A scanning electron microscope (SEM) was used to study the
With an increase of the proportion of phase change microcapsules, the pore density, pore size and water absorption and retention of the porous composite materials were decreased, while the phase change energy storage performance was improved and ΔH m was up to 31.22 J g −1. The phase change energy storage of the
Fig. 9 shows the schematic diagram of the paraffin@SiO 2 /FeOOH microcapsule preparation. The inorganic shell material not only effectively improved the thermal stability of the phase-change microcapsule, but also exhibited certain photo-thermal conversion performance. Schematic diagram of phase-change energy
A novel type of multifunctional microencapsulated phase change materials (MPCMs) with BaCO 3 as shell and binary phase change materials (PCMs) as core was prepared based on self-assembly method. In addition to their original thermal storage properties, MPCMs are endowed with the ability to shield against ionizing radiation by the
With a 15% microcapsule content, the epoxy resin has a reduced thermal conductivity of 0.5834 W/mK, with delays of 76.0% and 51.4% in the time used for the temperature rise/fall process. To investigate the thermal reliability of phase change microcapsules, such as phase change reversibility and energy storage/release
Yang et al. [90] prepared microcapsule phase change energy storage materials with n-octadecane as the core material and silicon nitride modified polymethyl
Phase-change microcapsules with photothermal conversion capabilities have been the focus of research in the energy storage field. In this study, a route is developed to prepare photothermal conversion and phase-change energy storage microcapsules by copper sulfide-stabilized Pickering emulsion with dodecanol tetradecyl ester as the phase
Similarly, the microcapsule structural phase transition of PMC has higher heat absorption/exothermic efficiency. 4. Conclusions. In conclusion, this study introduces a promising microcapsule encapsulation technique for phase-change thermal energy storage, which presents novel phase-change microcapsules.
Performances of microcapsule phase change material (MPCM) for thermal energy storage are investigated. The MPCM for thermal energy storage is prepared by a complex coacervation method with gelatin and acacia as wall materials and paraffin as core material in an emulsion system.
Latent heat storage using phase change materials (PCMs) with high melting points above 600 C can mitigate the fluctuation in renewable energy supply and recover energy from industrial waste heat.
Performances of microcapsule phase change material (MPCM) for thermal energy storage are investigated. The MPCM for thermal energy storage is prepared by a complex coacervation method with gelatin and acacia as wall materials and paraffin as core material in an emulsion system.
The shell composition and microstructure of microencapsulated phase-change materials (MPCMs) are of vital significance for achieving high thermal and mechanical properties. Herein, a new type of MPCM with double-walled shells (melamine-formaldehyde (MF) resin/carbon nanotube (CNT)-poly(4-styrenesulfonic acid
Microencapsulation is a viable technique to protect and retain the properties of phase change materials (PCMs) that are used in thermal energy storage
Phase change microcapsule materials have a high thermal resistance [[16], [17], [18]] resulting from their low thermal conductivity, which seriously affects the thermal transfer efficiency and limits their thermal storage and release.
In conclusion, this study introduces a promising microcapsule encapsulation technique for phase-change thermal energy storage, which presents
The thermal conductivity of phase change microcapsule tablet is 0.63 W/m·K, which is lower than that of pure Al powder tablets (0.93 W/m·K). Synthesis, characterization and thermal analysis of microencapsulated alumina–myristic acid phase change material for thermal energy storage [J] Appl. Phys., 126 (11) (2020) Google
Microencapsulated high-melting-point Al is prepared for phase change heat storage. A triple-coating is used, i.e. water treatment, Sol-gel treatment and thermal oxidation treatment. The capsules exhibit a melting point of around 655.5 °C and latent heat of around 227 J/g.
Thermal energy storage can be achieved according to three physical principles, i.e., (i) sensible heat thermal energy storage (SHTES) based on raising the temperature of the material (solid or liquid)
Fang, Y. et al. Facilitated synthesis and thermal performances of novel SiO 2 coating Na 2 HPO 4 ⋅ 7H 2 O microcapsule as phase change material for thermal energy storage. Sol. Energy Mater.
The thermal efficiency of the phase-change nanocapsules is related to the shell-core ratio. The thermal energy-storage capability is used to justify whether the PCM coated inside the nanocapsules can be normally melted and crystallized. The E en, E
The phase-change microcapsules (hereafter CaCO 3 @n-eicosane microcapsules) comprised of an n-eicosane core and a CaCO 3 shell were synthesized through an in-situ precipitation reaction employing an emulsion-templating technique. Fig. 1 shows the synthetic route of the CaCO 3 @n-eicosane microcapsules. n-Eicosane (2.0
Abstract Microencapsulated phase change materials (MEPCMs) have been widely used in many fields as thermal energy storage materials. This study reported a novel MEPCM with the functions of thermal energy storage, photothermal conversion, ultraviolet (UV) shielding, and superhydrophobicity, which was particularly suitable for
Phase change microcapsule materials have a high thermal resistance [[16], [17] Review on thermal conductivity enhancement, thermal properties and applications of phase change materials in thermal energy storage. Renew Sustain Energy Rev, 82 (2018), pp. 2730-2742.
The mBPs-MPCM composites have great potential in solar energy storage applications and the concept of integrating photothermal materials and PCMs as the core provides insights into the
Thermal energy storage (TES) using phase change materials (PCMs) is an innovative approach to meet the growth of energy demand. Microencapsulation techniques lead to overcoming some drawbacks of PCMs and enhancing their performances. This paper presents a comprehensive review of studies dealing with
Phase change materials (PCMs) are considered one of the most promising energy storage methods owing to their beneficial effects on a larger latent heat, smaller volume change
In conclusion, this study introduces a promising microcapsule encapsulation technique for phase-change thermal energy storage, which presents novel phase-change microcapsules. The resulting phase-change microcapsules exhibit excellent heat transfer performance and reliable leak prevention capabilities.
DSC test was conducted to investigate the phase change behavior and heat-storage property of Pa@SiO 2 microcapsules and the results are shown in Fig. 3 (a and b) and Table 1.The DSC curve of pure SiO 2 is a straight line with a slight downward slope, indicating that there is no phase change behavior during the testing temperature
A microcapsule shell can maintain PCMs in a fixed shape, which not only guarantee high thermal energy storage capacity, but also alleviates leakage caused by volume changes in the liquid PCM with variations in temperature [16], [17], [18]. In addition to the leakage issue, another major obstacle of PCMs is their low thermal stability, which
The latent heat and the phase change temperature of the SiO 2 -TiO 2 /paraffin microcapsule is 93.7 J/g and 29.0 °C, respectively. After 1000 times of heat storage-release cycles, the latent heat of the microcapsule was decreased by 6.58% and the encapsulation ratio was decreased by 2.62%.
An efficient way to address this issue is with latent heat storage technology. Phase change materials (PCMs), which have a higher energy storage density, are employed in latent heat storage technology to produce the effect of energy harvesting and release [2]. Many inorganic and organic PCMs (salt hydrates, paraffin, fatty acids/esters,
Phase change material emulsion (PCME) is a kind of functional fluid commonly used by latent heat thermal energy storage (LHTES) systems [29,30], and is divided into PCME and phase change material capsule emulsion (PCMCE).
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