Hygro-thermo-mechanical modeling of thin-walled photovoltaic laminates with polymeric interfaces

Liu, Z.; Reinoso, J.; Paggi, Marco

doi:10.1016/j.jmps.2022.105056

Cited by 4 publications

(2 citation statements)

References 60 publications

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“…The layer of silicon solar cells is used to produce electric energy, and it is protected by the tempered glass from the outdoor harsh environments 1–3 . Despite the advantages and strengths, the PV modules are sensitive to moisture diffusion as well as chemical reactions, especially in hygrothermal outdoor environments, 4–8 and thus its reliability is not still very competitive. A great deal of research has been focused on investigating the degradation mechanisms, see References 9–16, among many others, and most of them studied the diffusion phenomena at the constant temperature and humidity conditions.…”

Section: Introductionmentioning

confidence: 99%

A multifield coupled thermo‐chemo‐mechanical theory for the reaction‐diffusion modeling in photovoltaics

Liu

Lenarda

Reinoso

et al. 2023

Numerical Meth Engineering

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A comprehensive coupled thermo-chemo-mechanical modeling framework is proposed in this work to study the reaction-diffusion phenomena taking place inside photovoltaics (PV). When exposed to hygrothermal conditions, the encapsulant ethylene-co-vinyl acetate (EVA) layers undergo chemical degradation that significantly influences the overall PV performance. Aiming at efficient thermo-mechanical modeling, the coupled displacement-temperature governing equations for the EVA layers are formulated, and its 3D finite element (FE) implementation is derived in detail. Subsequently, the chemical reaction-diffusion processes occurring in the EVA layers are described, and the corresponding numerical implementation is formulated with the consideration of spatial and temporal variation of diffusivity and chemical kinetic rates. Specifically, the thermo-mechanical solution accounting for the heat generation from chemical reactions is projected to the FE model of the reaction-diffusion system in order to determine the kinetic rates and diffusion coefficients for its subsequent analysis. The proposed modeling method is applied to simulate the evolution of reaction-diffusion species at different damp heat tests, and predictions show a very satisfactory agreement with the analytical solution and experimental electroluminescence images taken from the literature. Its capabilities to predict the spatio-temporal variation are demonstrated through the simulation of the humidity freeze test, where the cyclic temperature boundary condition is imposed. With this modeling framework, it is possible to evaluate the degradation of PV modules under varying environmental boundary conditions, thus providing a guideline to design new products tailored for specific climatic zones.

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Section: Introductionmentioning

confidence: 99%

A multifield coupled thermo‐chemo‐mechanical theory for the reaction‐diffusion modeling in photovoltaics

Liu

Lenarda

Reinoso

et al. 2023

Numerical Meth Engineering

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“…Besides, it is of great importance to recover the precious silicon wafers and other metals for the manufacturing of new products to reduce the cost, supporting the sustainable development of energy production (Bustamante & Gaustad, 2014;Dias et al, 2021;Nevala et al, 2019;Padoan, Altimari, & Pagnanelli, 2019). Normally, the PV module is a laminate structure composing of different plies including tempered glass, silicon solar cells, and backsheet, which are bonded to each other by ethylene-co-vinyl acetate (EVA) layers (Liu, Reinoso, & Paggi, 2022b), as shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

A continuum large-deformation theory for the coupled modeling of polymer–solvent system with application to PV recycling

Liu

Marino

Reinoso

et al. 2023

International Journal of Engineering Science

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Broadband Response Diaphragm Materials for Human Acoustics Engineering

Bi,

Wei,

Zhou

et al. 2024

Small

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High‐performance fiber‐reinforced composite materials demonstrate great potential for manufacturing diaphragms in human‐engineered acoustic loudspeakers. However, the notable scarcity of high‐quality fibers and the uncontrollable nature of the diaphragm structure limit the production of high‐quality sound that conforms to human hearing. In this study, a novel composite diaphragm material is devloped by integrating the swelling carboxymethyl cellulose microfiber (CMF) with the hot‐melted sheath‐core fiber (SCF) based on the “interpenetrating polymeric network” (“IPN”) strategy. Simulation methods and Flory‐Huggins theory are applied to explain the mechanism of fiber‐structure‐property interaction in composite diaphragm materials. Owing to the distinct microstructure, this bio‐based diaphragm material shows superior mechanical characteristics, including low density (≈0.92 g cm−3), high tensile strength (≈235 MPa), and high modulus (≈9.73 GPa). Moreover, the loudspeaker mounted with bio‐based diaphragm material exhibits enhanced sensitivity (≈82.6 dB) and stable performance across a broad frequency spectrum. This study not only elucidates the multiphysics working principles of loudspeakers but also establishes a crucial connection between the physical properties of diaphragms and loudspeaker performance. It opens up new avenues for the design of high‐performance bio‐based loudspeaker diaphragms in high‐fidelity (Hi‐Fi) acoustic devices.

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Hygro-thermo-mechanical modeling of thin-walled photovoltaic laminates with polymeric interfaces

Cited by 4 publications

References 60 publications

A multifield coupled thermo‐chemo‐mechanical theory for the reaction‐diffusion modeling in photovoltaics

A multifield coupled thermo‐chemo‐mechanical theory for the reaction‐diffusion modeling in photovoltaics

A continuum large-deformation theory for the coupled modeling of polymer–solvent system with application to PV recycling

Broadband Response Diaphragm Materials for Human Acoustics Engineering

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