Thermal conductivity enhancement of phase change materials for thermal energy storage: A review

Liu, Lingkun; Su, Di; Tang, Yaojie; Fang, Guiyin

doi:10.1016/j.rser.2016.04.057

Cited by 333 publications

(101 citation statements)

References 94 publications

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“…[6][7][8] TES works by heating thermal energy storage materials (TESMs) during a charging period and then releasing the heat when the energy is needed. 8 Thus, TESMs play a crucial part in thermal energy storage systems, including thermal management application.…”

Section: -5mentioning

confidence: 99%

Graphene-decorated silica stabilized stearic acid as a thermal energy storage material

Xie

Chen

2017

RSC Adv.

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Novel thermal energy storage materials were synthesized from graphene-decorated silica (SG) and stearic acid (SA) by vacuum impregnation method. Three kinds of SG (SG 1 , SG 5 , and SG 10 ) were prepared by decorating silica with different contents of graphene and were then used to stabilize SA to prepare SA/ SG 1 , SA/SG 5 , and SA/SG 10 composites. The structures and thermal energy storage performances of the SA/SG composites were investigated. It is of interest that the thermal energy storage behaviors of the SA/ SG composites were dramatically changed with different contents of graphene, presenting more than one endothermal or exothermal peak in the differential scanning calorimetry (DSC) curves while pure SA had only one. The SA in SA/SG 1 and SA/SG 5 showed higher crystallinity (F c , 84.44% and 84.39%) and greater effective energy storage per unit mass (E ef , $150 J g À1 ) than that of SA in SA/SG 10 . These thermal energy storage behaviors and properties were revealed to be related to the pore structures of the SG.The thermal stability of the SA/SG composites was analyzed by a thermogravimetric analyzer (TGA), and the SA/SG composites have good thermal stability. Addition of graphene was beneficial to the enhancement in thermal conductivity of the SA/SG composite, which could reach 0.90 W m, and 1.12 W m À1 K À1 for SA/SG 1 , SA/SG 5 , and SA/SG 10 , respectively; and were 246%, 304%, and 331% higher than pure SA, respectively. SA/SG 5 has potential for application in thermal energy storage, especially in thermal gradients due to it having both high E ef and thermal conductivity.

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Section: -5mentioning

confidence: 99%

Graphene-decorated silica stabilized stearic acid as a thermal energy storage material

Xie

Chen

2017

RSC Adv.

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“…The porosity and geometrical structure of foam is significantly shows changes on performance of thermal storage unit. Liu et al studied the thermal conductivity enhancement of PCM by inserting different metal as an additive in it. Author says that the high thermal conductivity metals such as copper, nickel, aluminum, metal salt, and carbon material can be inserted in PCM to enhance the efficiency of thermal storage system.…”

Section: Introductionmentioning

confidence: 99%

Aluminum‐based thermal storage system with solar collector using nanofluid

2019

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Metal and phase change material (PCM) is used for thermal storage system.Aluminum as a metal and erythritol as the PCM is a better option for the thermal storage. This thermal storage is charging with the help of solar energy through a solar collector. Parabolic trough solar collector is used to collect the solar energy. Evacuated tube was used to absorb solar radiation and soybean oil-based nanofluid containing Al 2 O 3 nanoparticles at volume concentration of 0.1% is filled in tube to transfer heat from absorber tube to thermal storage. Nanofluid was prepared with the help of ultrasonication. The heat transfer from the absorber to thermal storage through self-circulation unit. Experimentation is carried out with and without nanofluid. Nanofluid of soybean oil and Al 2 O 3 is enhanced the performance of solar collector. The thermal storage and absorber temperature is reached upto the 153 C and 178 C while using nanofluid. The discharging of PCM is carried out through experimentation.The PCM is filled in thermal storage, which changes its phase and stores the energy which can be used at night when solar energy is not available. K E Y W O R D Saluminum-based thermal storage, heat transfer fluid, nanofluid, phase change materials, solar collector

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“…Metal based additives include particles and or containers of aluminum, copper, nickel and gold particles and metal salts. This review also compiled the models to calculate thermal conductivity [7]. J. Pereira da Cunha and P.C.…”

Section: Introductionmentioning

confidence: 99%

Micro-Encapsulated Phase Change Materials: A Review of Encapsulation, Safety and Thermal Characteristics

2016

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Phase change materials (PCMs) have been identified as potential candidates for building energy optimization by increasing the thermal mass of buildings. The increased thermal mass results in a drop in the cooling/heating loads, thus decreasing the energy demand in buildings. However, direct incorporation of PCMs into building elements undermines their structural performance, thereby posing a challenge for building integrity. In order to retain/improve building structural performance, as well as improving energy performance, micro-encapsulated PCMs are integrated into building materials. The integration of microencapsulation PCMs into building materials solves the PCM leakage problem and assures a good bond with building materials to achieve better structural performance. The aim of this article is to identify the optimum micro-encapsulation methods and materials for improving the energy, structural and safety performance of buildings. The article reviews the characteristics of micro-encapsulated PCMs relevant to building integration, focusing on safety rating, structural implications, and energy performance. The article uncovers the optimum combinations of the shell (encapsulant) and core (PCM) materials along with encapsulation methods by evaluating their merits and demerits.

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Thermal conductivity enhancement of phase change materials for thermal energy storage: A review

Cited by 333 publications

References 94 publications

Graphene-decorated silica stabilized stearic acid as a thermal energy storage material

Graphene-decorated silica stabilized stearic acid as a thermal energy storage material

Aluminum‐based thermal storage system with solar collector using nanofluid

Micro-Encapsulated Phase Change Materials: A Review of Encapsulation, Safety and Thermal Characteristics

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