A systematic, carbon-based composite phase change materials with substantial increase of the thermal conductivity and energy storage density was assembled by encapsulating PEG into graphene foams (GF), CNTs and hierarchical porous materials derived from ...
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3.2. Thermal and mechanical properties of PCF The high LA loading ratio brought high thermal performance for PCF. The pure LA showed a melting enthalpy of 185.9 J g −1.The enthalpies of PCFs increased from 119.2 to 145.2 J g −1 with LA/PU ratio from 1.5 to 3, showing a significant improvement compared with electrospinning phase change …
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In this paper, the thermal conductivity mechanism of PCM (basic thermal conductivity, phonon thermal conductivity and channel thermal conductivity) and …
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Thermal conductivity and latent heat thermal energy storage characteristics of paraffin/expanded graphite composite as phase change material Appl Therm Eng, 27 ( 2007 ), pp. 1271 - 1277 View PDF …
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High thermal conductivity metal materials such as metal foams, metal particles and even metal fins can effectively improve the thermal conduction of alkanes as phase change energy storage materials.
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Due to its high energy density, high temperature and strong stability of energy output, phase change material (PCM) has been widely used in thermal energy systems. The aim of this review is to provide an insight into the thermal conduction mechanism of phonons in PCM and the morphology, preparation method as well as …
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Cui et al. [27] reported that the thermal conductivity of phase change materials (soy wax, thermal conductivity 0.324 W/m K) was improved by adding carbon nanofiber (CNF) and carbon nanotube (CNT). They used soy wax (melting temperature 52–54 °C) as a PCM and added CNF (outer diameter 200 nm) and CNTs (average …
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The thermal storage capacity, thermal conductivity and solar-/electro- thermal energy conversion and storage properties of the composited PCMs CMC@CNT-X-PPy/PW, were investigated in detail. The molecular dynamics simulation was employed to count the efficacy of in-situ polymerized PPy coatings between CNTs for improving the …
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Thermal energy storage can shift electric load for building space conditioning 1, 2, 3, 4, extend the capacity of solar-thermal power plants 5, 6, enable …
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Materials to be used for phase change thermal energy storage must have a large latent heat and high thermal conductivity. They should have a melting temperature lying in the practical range of operation, melt congruently with minimum subcooling and be chemically stable, low in cost, non-toxic and non-corrosive.
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Engineering the Thermal Conductivity of Functional Phase‐Change Materials for Heat Energy Conversion, Storage, and Utilization October 2019 Advanced Functional Materials 30(8)
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Scientific Reports - Enhanced thermal conductivity of form-stable phase change composite with single-walled carbon nanotubes for thermal energy storage Skip to main content Thank you for visiting ...
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Summary. Phase change materials (PCMs) having a large latent heat during solid-liquid phase transition are promising for thermal energy storage applications. However, the relatively low thermal conductivity of the majority of promising PCMs (<10 W/ (m ⋅ K)) limits the power density and overall storage efficiency.
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Among various cooling technologies, phase change material (PCM) has been widely used due to its simple structure, good cooling effect, and no additional energy consumption. In this paper, the principle, characteristics, electrode material types, electrolyte types and research progress of PCM materials in supercapacitor thermal management …
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However, the inherent low electrical conductivity (10 7– 10 12 Ω·m) and thermal conductivity (0.1–0.4 W/mK) of pristine PCMs severely restrict their electro-thermal energy conversion utilization (Cheng et al., …
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Thermal conductivity and latent heat thermal energy storage characteristics of paraffin/EG composite as phase change material Appl Therm Eng, 27 ( 2007 ), pp. 1271 - 1277 View PDF View article View in Scopus Google Scholar
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Latent heat energy storage and release media of organic phase change materials (PCMs) are promising to utilize thermal energy coming from solar radiation for effective thermal management. However, the inherently low …
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DOI: 10.1016/J.ENCONMAN.2017.07.019 Corpus ID: 102821381 Thermal sensitive flexible phase change materials with high thermal conductivity for thermal energy storage @article{Li2017ThermalSF, title={Thermal sensitive flexible phase change materials with high thermal conductivity for thermal energy storage}, author={Wanwan Li and Wen …
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Thermal energy storage technologies based on phase-change materials (PCMs) have received tremendous attention in recent years. These materials are capable of reversibly storing large amounts of thermal energy during the isothermal phase transition and offer enormous potential in the development of state-of-the-art renewable energy infrastructure.
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Thermal conductivity is a key parameter for phase change energy storage systems to measure how fast or slow the energy is transferred. Many …
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Sensible heat storage (SHS) involves heating a solid or liquid to store thermal energy, considering specific heat and temperature variations during phase change processes. Water is commonly used in SHS due to its abundance and high specific heat, while other substances like oils, molten salts, and liquid metals are employed at …
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Phase change materials (PCMs) having a large latent heat during solid-liquid phase transition are promising for thermal energy storage applications. However, the relatively low thermal conductivity of the …
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It is noted that the maximum thermal conductivity of PA/EG/CuS reached 0.372 W m-1 K-1 and the maximum phase change thermal storage capacity reached 260.4 kJ kg-1, which proved the excellent ...
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Expanded graphite (EG) based phase change material (PCM) has attracted significant concern in thermal management systems. In this paper, a series of …
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It restricts the application potential of energy storage systems due to the higher heat conductivity and density of typical PCMs and their low phase change rates. Thus, increased thermal conductivity can be achieved by adding highly conductive materials in various methods [225] .
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3.1.1.1. Salt hydrates Salt hydrates with the general formula AB·nH 2 O, are inorganic salts containing water of crystallization. During phase transformation dehydration of the salt occurs, forming either a salt hydrate that contains fewer water molecules: ABn · n H 2 O → AB · m H 2 O + (n-m) H 2 O or the anhydrous form of the salt AB · n H 2 O → …
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Advanced functional electro-thermal conversion phase change materials (PCMs) can efficiently manage the energy conversion from electrical energy to thermal …
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Phase change materials (PCMs) can enhance the performance of energy systems by time shifting or reducing peak thermal loads. The effectiveness of a PCM is defined by its energy and power density—the total available storage capacity (kWh m −3) and how fast it can be accessed (kW m −3).).
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Summary. Phase change materials (PCMs) having a large latent heat during solid-liquid phase transition are promising for thermal energy storage applications. However, the relatively low thermal conductivity of the majority of promising PCMs (<10 …
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Finally, the phase change energy storage material is used as a replacement of gypsum and cement with mass dosages of 10%, 20% and 30% in their pastes to evaluate their mechanical properties and thermal conductivity.
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Thermal conductivity enhancement of a sodium acetate trihydrate–potassium chloride–urea/expanded graphite composite phase–change material for latent heat thermal energy storage Energy Build ( 2020 ), p.
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Phase change materials (PCMs) for thermal energy storage. Thermal energy can be stored as latent energy by heating and cooling the material without much …
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This study presents the most up-to-date, comprehensive, and trustworthy information on the role of MXene-based PCM in thermal energy storage applications. This review paper focuses on the thermal energy storage applications of 2D PCM. The thermal energy storage applications included Photovoltaic PCM, Solar water heater systems, …
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Phase change materials (PCMs) are recognized as an effective means of thermal energy storage with extensive use across various scenarios. Despite their utility, the inherent low conductivity of these materials significantly hampers thermal energy conversion and storage without the aid of a temperature differential.
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