Review on thermal conductivity enhancement, thermal properties and applications of phase change materials in thermal energy storage

Lin, Yaxue; Jia, Yuting; Alva, Guruprasad; Fang, Guiyin

doi:10.1016/j.rser.2017.10.002

Cited by 645 publications

(212 citation statements)

References 112 publications

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“…The enhancement of thermal conductivity can be easily achieved by microencapsulation by confining PCMs within the shell material with high thermal conductivity. As of now, a large number of studies about microencapsulation technology for improving thermal conductivity have been reported . The adoption of shell materials for microencapsulation to enhance the thermal conductivity varies from inorganic to organic–inorganic hybrid materials.…”

Section: Thermal Conduction Of Pcmsmentioning

confidence: 99%

Engineering the Thermal Conductivity of Functional Phase‐Change Materials for Heat Energy Conversion, Storage, and Utilization

Yuan

Shi

Aftab

et al. 2019

Adv Funct Materials

257

136

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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. Thermal conductivity plays a vital role in regulating the thermal charging and discharging rate of PCMs and improving the heat‐utilization efficiency. The strategies for tuning the thermal conductivity of PCMs and their potential energy applications, such as thermal energy harvesting and storage, thermal management of batteries, thermal diodes, and other forms of energy utilization, are summarized systematically. Furthermore, a research perspective is given to highlight emerging research directions of engineering advanced functional PCMs for energy applications.

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Section: Thermal Conduction Of Pcmsmentioning

confidence: 99%

Engineering the Thermal Conductivity of Functional Phase‐Change Materials for Heat Energy Conversion, Storage, and Utilization

Yuan

Shi

Aftab

et al. 2019

Adv Funct Materials

257

136

View full text Add to dashboard Cite

show abstract

“…Phase change materials mainly include three categories: organic, inorganic, and eutectic . Organic PCMs, such as paraffin and fatty acids, are relatively expensive and combustible.…”

Section: Heat Storage Technologymentioning

confidence: 99%

Progress in thermochemical energy storage for concentrated solar power: A review

et al. 2018

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Summary Energy plays an important role in a fast‐paced modern society. With the depletion of fossil energy, effective utilization of solar energy is getting increasingly urgent. Thermal energy storage is an inevitable choice for effective utilization of renewable energy sources. As one of the most promising renewable energy sources, solar energy is inexhaustible. But it has some shortcomings such as instability and intermittency, affected by time, climate, and geographical location. Thermal energy storage technology, which can effectively reduce the cost of concentrated solar power generation, plays a crucial role in bridging the gap between energy supply and demand. In addition, thermal energy storage subsystem can improve performance and reliability of the whole energy system. According to different principles, thermal storage technology is generally classified as sensible heat storage, latent heat storage, and thermochemical energy storage. Most solar thermal power generation systems, currently demonstrated and operated in the world, adopt the method of sensible thermal energy storage. In contrast, thermochemical energy storage is a relatively new concept, which is still in the stage of basic test and verification. Thermochemical energy storage technology stores and releases energy through endothermic and exothermic reversible reactions. A closed system with separated reactants and products, in theory, can store energy indefinitely. The main thermochemical energy storage systems include redox system, metal hydride system, carbonate decomposition system, ammonia decomposition system, methane reforming system, and inorganic hydroxide system.

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“…Waqas et al reviewed the economic viability of PV‐PCM systems and concluded that overall payback period of the PV‐PCM system is 12 to 15 years, and the payback period can be reduced by enhancing the benefits by collecting the absorbed heat from PCM and utilizing it for further applications. In practical application, the following requirements are put forward for PCMs: phase change temperature within the practical operating range, high latent heat storage, stable chemical and thermodynamic properties, nontoxic, environmentally friendly, low‐cost and easy to obtain, small volume change during phase change, no undercooling . Organic PCMs for thermal energy storage have been restricted by several problems, such as low thermal conductivity (0.1‐0.2 W m −1 K −1 ) and liquid leakage during the repeated solid‐liquid phase change phase transition .…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of urea/ammonia bromide composite phase change material

Liu

Zhang

et al. 2020

Int J Energy Res

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Summary In order to find phase change materials that can be better applied in the field of solar collectors, the phase change heat storage properties of urea (U) and ammonium bromide (AB) were studied. The eutectic ratio of UAB was found by the Edison method, and different additives were added to UAB by dipping and mixing. The structure and property of the composites were characterized by X‐ray powder diffraction (XRD), scanning electron microscope (SEM), differential scanning calorimetry (DSC), and TG/TGA, respectively. The results showed that the eutectic ratio of UAB was 6:3; it was weakly acidic after melting not layered. When 6‐wt% EG and 1‐wt% nanometer titanium dioxide (TiO2) were added, the thermal conductivity of the material increased by 3.62 times; the thermal diffusivity was increased by 6.77 times. When the mass fraction of EG is between 1% and 6%, the larger the mass fraction of EG, the greater the thermal conductivity of the material. After 1000 cycles, the composite material performance was stable; at the same time, the used materials can be used as fertilizers to solve the problem of material pollution, which indicated that the prepared UAB/TiO2/EG composite PCMs had great application prospect in the field of solar collectors.

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Review on thermal conductivity enhancement, thermal properties and applications of phase change materials in thermal energy storage

Cited by 645 publications

References 112 publications

Engineering the Thermal Conductivity of Functional Phase‐Change Materials for Heat Energy Conversion, Storage, and Utilization

Engineering the Thermal Conductivity of Functional Phase‐Change Materials for Heat Energy Conversion, Storage, and Utilization

Progress in thermochemical energy storage for concentrated solar power: A review

Preparation and characterization of urea/ammonia bromide composite phase change material

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