Thermally-enhanced nanoencapsulated phase change materials for latent functionally thermal fluid

Lan, Wei; Shang, Bofeng; Wu, Ruikang; Yu, Xingjian; Hu, Run; Luo, Xiaobing

doi:10.1016/j.ijthermalsci.2020.106619

Cited by 36 publications

(10 citation statements)

References 49 publications

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“…By washing the PCM capsules with the base liquid, the phase-conversion process can take place in the "full volume" of the PCM since it can start simultaneously in each capsule being washed. Moreover, the addition of nanoparticles of materials with high thermal conductivity to the PCM or base liquid increases the conductivity of the entire slurry [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies of the Influence of Microencapsulated Phase Change Material on Thermal Parameters of a Flat Liquid Solar Collector

2021

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The article presents the results of preliminary research aimed at determining the possibility of using microencapsulated phase change material (mPCM) slurries as a working fluid in installations with a flat liquid solar collector. In the tests, the following were used as the working fluid: water (reference liquid) and 10% wt. and 20% wt. of an aqueous solution of the product under the trade name MICRONAL® 5428 X. As the product contained 43% mPCM, the mass fraction of mPCM in the working liquid was 4.3% and 8.6%, respectively. The research was carried out in laboratory conditions in the range of irradiance I = 250–950 W/m2. Each of the three working fluids flowed through the collector in the amount of 20 kg/h, 40 kg/h, and 80 kg/h. The working fluid was supplied to the collector with a constant temperature Tin = 20 ± 0.5 °C. It was found that the temperature of the working fluid at the collector outlet increases with the increase in the radiation intensity, but the temperature achieved depended on the type of working fluid. The greater the share of mPCM in the working liquid, the lower the temperature of the liquid leaving the solar collector. It was found that the type of working fluid does not influence the achieved thermal power of the collector. The negative influence of mPCM on the operation of the solar collector was not noticed; the positive aspect of using mPCM in the solar installation should be emphasized—the reduced temperature of the medium allows the reduction in heat losses to the environment from the installation, especially in a low-temperature environment.

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Section: Introductionmentioning

confidence: 99%

Experimental Studies of the Influence of Microencapsulated Phase Change Material on Thermal Parameters of a Flat Liquid Solar Collector

2021

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“…The micro-and nanoencapsulated PCMs benefit from the prevention of material exchange with the environment, increased heat transfer area, and improved shape and cycling stability. 23 The most common approaches in organic PCM encapsulation include reactions of miniemulsion, [24][25][26] in situ, [27][28][29] and interfacial polymerizations. [30][31][32] However, in these methods, the resulting properties of encapsulated PCMs depend on various synthesis parameters.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of shape-stable phase-change composites via the adsorption of stearic acid onto cellulose microfibers

Voronin

Mendgaziev

Рубцова

et al. 2022

Mater. Chem. Front.

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“…Considering the high phase change temperature and corrosiveness of inorganic PCM, 4 the research on PCM is mainly focused on medium and low temperature organic PCM, such as paraffin waxes, fatty acids, and PEG. It plays a crucial role in related thermal management fields such as energy-efficient buildings, 5 solar−thermal storage systems, 6 waste heat recovery, 7 and electronic device heat dissipation. 8,9 As a typical organic solid−liquid PCM, PEG is widely used in thermal management because of its high latent heat, adjustable phase change temperature according to molecular weight, and environmental friendliness.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Considering the high phase change temperature and corrosiveness of inorganic PCM, the research on PCM is mainly focused on medium and low temperature organic PCM, such as paraffin waxes, fatty acids, and PEG. It plays a crucial role in related thermal management fields such as energy-efficient buildings, solar–thermal storage systems, waste heat recovery, and electronic device heat dissipation. , …”

Section: Introductionmentioning

confidence: 99%

Modified Melamine Foam-Based Flexible Phase Change Composites: Enhanced Photothermal Conversion and Shape Memory Properties

Huí

Bai

et al. 2021

ACS Appl. Polym. Mater.

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Phase change materials (PCM) have broad application prospects in energy utilization and thermal management due to their high heat storage capacity. Current research focuses on solving the problems of easy leakage and slow heat transfer during the phase change of PCM. However, problems such as strong rigidity and weak light absorption also severely limit their practical applications. In this work, the RHTC-BN compound was prepared by sonicating carboxy-rich carbon (RHTC) and boron nitride (BN). The flexible (RHTC-BN)/MF was prepared by coating BN on melamine sponges (MF) skeleton using RHTC as a bridge. (RHTC-BN)/MF/PEG PCM was prepared by vacuum impregnation polyethylene glycol (PEG) into (RHTC-BN)/MF. The high porosity and low density of (RHTC-BN)/MF give (RHTC-BN)/MF/PEG PCM excellent leak-proof performance and high latent heat (151.4 J/g), and the optimal loading of PEG is 92.3 wt %. The bridging effect of RHTC drives the formation of a cross-interconnected 3D thermal conductivity network in (RHTC-BN)/MF, which endows (RHTC-BN)/MF/PEG PCM with high thermal conductivity (0.92 W m–1 K–1). Research proved that the flexibility of (RHTC-BN)/MF sponge and the phase change behavior of PEG does not just provide (RHTC-BN)/MF/PEG PCM with thermally driven shape memory (recovery speed of about 355 s) and self-adhesive function. Moreover, the photothermal conversion energy storage efficiency is as high as 91.5%. It has excellent potential in solar energy storage systems and provides a pathway for developing thermally responsive shape adaptive devices for energy storage applications.

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Thermally-enhanced nanoencapsulated phase change materials for latent functionally thermal fluid

Cited by 36 publications

References 49 publications

Experimental Studies of the Influence of Microencapsulated Phase Change Material on Thermal Parameters of a Flat Liquid Solar Collector

Experimental Studies of the Influence of Microencapsulated Phase Change Material on Thermal Parameters of a Flat Liquid Solar Collector

Facile synthesis of shape-stable phase-change composites via the adsorption of stearic acid onto cellulose microfibers

Modified Melamine Foam-Based Flexible Phase Change Composites: Enhanced Photothermal Conversion and Shape Memory Properties

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