Numerical Modeling of the Mechanical Reliability of Multicoated Nanoencapsulated Phase-Change Materials with Improved Thermal Performance
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Títol
Numerical Modeling of the Mechanical Reliability of Multicoated Nanoencapsulated Phase-Change Materials with Improved Thermal PerformanceAutoria
Data de publicació
2021-12-21Editor
WileyCita bibliogràfica
FORNER-ESCRIG, Josep, et al. Numerical Modeling of the Mechanical Reliability of Multicoated Nanoencapsulated Phase‐Change Materials with Improved Thermal Performance. Solar RRL, 2021, p. 2100724.Tipus de document
info:eu-repo/semantics/articleVersió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
Nanoencapsulated phase-change materials (nePCMs) are investigated for enhancing thermal energy storage. However, the shell of these nanocapsules may fail due to stress developed during thermal processes, leading to ... [+]
Nanoencapsulated phase-change materials (nePCMs) are investigated for enhancing thermal energy storage. However, the shell of these nanocapsules may fail due to stress developed during thermal processes, leading to melting enthalpy loss. To overcome this problem, SiO2 and Al2O3 coatings on Sn nanoparticles are synthesized by atomic layer deposition (ALD). To study the influence of shell thickness and composition on the probability of failure (POF) of nePCM shells in single- and multicoated nePCMs, a probabilistic numerical tool combining Monte Carlo techniques and a thermomechanical finite-element model with phase change are used. The uncertainties of the material and geometrical properties of nePCMs are included in the analysis. Both deterministic and probabilistic failure criteria are taken into account to consider the effect of dispersion on tensile strength. The results indicate that multicoated nePCMs enhance thermomechanical performance in relation to their single-coated counterparts. Both the numerical simulations and experiments confirm that the POF of nePCM shells and melting enthalpy loss in multicoated nePCMs lower with shell thickness. The results after 50 ALD cycles indicate that Al2O3 coatings exhibit better performance because a POF of 1.66% is obtained with 1.1% enthalpy loss, while the POF for SiO2 is 72.38% with 3.5% enthalpy loss. [-]
Publicat a
Sol. RRL, 2021Entitat finançadora
Ministerio de Economía y Competitividad (MINECO), Spain | Ministerio de Economía, Industria y Competitividad (MINEIC), Spain | Fondo Social Europeo | Universitat Jaume I
Codi del projecte o subvenció
ENE2016-77694-R | BES-2017-080217 (FPI program) | E-2018-10
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Copyright © 2021 John Wiley & Sons, Inc. All rights reserved
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info:eu-repo/semantics/openAccess
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info:eu-repo/semantics/openAccess
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