Preparation and characterization of sodium thiosulfate pentahydrate/silica microencapsulated phase change material for thermal energy storage

Liu, Chenzhen; Wang, Cui; Li, Yimin; Rao, Zhonghao

doi:10.1039/c6ra28056k

Cited by 62 publications

(18 citation statements)

References 31 publications

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“…Similar work has been done by Liu et al , on the encapsulation of sodium thiosulfate pentahydrate into microcapsules with silica shell. 170 The authors demonstrated successful encapsulation of inorganic PCM into silica shell by sol–gel method with high encapsulation rate (94.65 wt%). However, the stability of the capsules during the heat uptake/release cycles was not demonstrated.…”

Section: Encapsulation Of Inorganic Pcmsmentioning

confidence: 97%

Nanoencapsulation of phase change materials for advanced thermal energy storage systems

et al. 2018

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Section: Encapsulation Of Inorganic Pcmsmentioning

confidence: 97%

Nanoencapsulation of phase change materials for advanced thermal energy storage systems

et al. 2018

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“…One of the most promising materials used in order to store latent heat are the phase changing materials (PCMs) because they can store 5-14 times more energy than classical materials [9,10]. According to Soares et al [9], PCMs integrated in building envelope or building systems could determine the following benefits: Phase changing materials is a TES medium that draws the attention of many researchers over the last decade [11,12] and according to Navarro et al [6] these materials can improve the overall efficiency of systems using renewable energy sources by storing the surplus energy and using it during the periods when the source is not available (e.g. during night-time in case of solar radiation).…”

Section: Latent Heat Thermal Energy Storage (Lhtes)mentioning

confidence: 99%

Experimental investigation of the charge/discharge process for an organic PCM macroencapsulated in an aluminium rectangular cavity

et al. 2018

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Buildings sector has one of the highest potential regarding the reduction of greenhouse gases emissions, as being responsible for more than 40% of energy consumption worldwide. This is why, in order to achieve indoor thermal comfort, it is mandatory to use energy-efficient systems. Materials acting as thermal energy storage (TES) represents one of the most effective strategy that can be implemented and nowadays, many studies are focusing their attention on latent heat storage, respectively on phase changing materials (PCM) which can embed a large embed a high quantity of energy, unlike classic materials acting as thermal mass. This purpose of this paper is to experimentally investigate the charge and discharge processes for an organic PCM (RT35 paraffin) macroencapsulated in an aluminium rectangular cavity which was placed first in a horizontal position and after in a vertical position. After several experimental campaigns conducted we determined that the vertical position enhance the heat transfer because of the natural convection which occurs inside the cavity. Therefore, the charging time is lower in case of the vertical cavity and the temperature measured inside and on the surface is higher.

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“…Capsules offer a confined space with a higher heat transfer area, reduced reactivity with the outer environment, and controlled changes of volume during the phase transition . Diverse chemical (e.g., emulsion/miniemulsion polymerization, , phase separation, solvent evaporation, , in situ polymerization and solvent evaporation, , interfacial polymerization, or surface-thiol Michael addition polymerization), physicochemical (e.g., sol–gel and inorganic precipitation processes), , and mechanical (e.g., mechanical packaging with or without electroplating methods) techniques have been successfully used for the encapsulation of salts and hydrated salts . Sodium phosphate dodecahydrate, sodium sulfate decahydrate, magnesium nitrate hexahydrate, and mixtures of two different salts were commonly encapsulated within different polymer (e.g., PMMA , or poly(ethyl-2-cyanoacrylate) , ), inorganic (e.g., silica), , or polymer–inorganic (e.g., polyurethane–silica) hybrid capsules.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Polyurethane Microcarriers from Nanoparticle-Stabilized Emulsions for Thermal Energy Storage

Álvarez-Bermúdez

Adam-Cervera

Aguado-Hernandiz

et al. 2020

ACS Sustainable Chem. Eng.

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Hydrated inorganic salts are phase change materials (PCMs) with promising thermal energy storage capacity. However, their application is commonly restricted because of problems of phase segregation, incongruent melting, cycling instability, or supercooling. This work presents an encapsulation method of hydrophilic PCMs that allows for the incorporation of additional functionalities within a protective shell occluding a storage core. Interfacial polymerization in nanoparticle-stabilized inverse emulsions (also called "Pickering emulsions") is used as a synthetic platform to guarantee the stability and latent heat storage efficiency of sodium sulfate decahydrate, taken as a model case of a hydrated salt. Thus, functional polyurethane hybrid microcapsules with magnetic and/or catalytic species (e.g., CeO 2 , TiO 2 , Fe 3 O 4 ) accessible on the surface were used for the encapsulation of an aqueous solution of sodium sulfate decahydrate salt. The hermeticity of the polyurethane shell combined with the thermal conductivity of magnetite nanoparticles and the nucleating ability of a second salt with a similar structure (e.g., sodium dihydrogen phosphate dihydrate) guaranteed the chemical stability, recyclability, and a minimization of the supercooling of the phase change material. Magnetically recoverable microcarriers, with high storage capacity and stability, are proposed for the controlled storage and release of thermal energy at living temperatures.

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Preparation and characterization of sodium thiosulfate pentahydrate/silica microencapsulated phase change material for thermal energy storage

Abstract: Microencapsulated phase change materials (MicroPCM) were successfully fabricated by encapsulation of sodium thiosulfate pentahydrate (SoTP) as core with silica shell using sol–gel method.

Cited by 62 publications

References 31 publications

Nanoencapsulation of phase change materials for advanced thermal energy storage systems

Nanoencapsulation of phase change materials for advanced thermal energy storage systems

Experimental investigation of the charge/discharge process for an organic PCM macroencapsulated in an aluminium rectangular cavity

Magnetic Polyurethane Microcarriers from Nanoparticle-Stabilized Emulsions for Thermal Energy Storage

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