Thermomechanical deformations in photovoltaic laminates

Autor: Ulrich Eitner, Marco Paggi, Sarah Kajari-Schröder
Jazyk: angličtina
Rok vydání: 2011
Předmět:
Digital image correlation
Materials science
Weight factor
Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
Strain measurement
Multilayered beams
Thermo-elastic deformations
Analytical model
Multilayered system
Thermal expansion
Photovoltaic laminate
Image analysis
Solar power generation
Digital image correlation technique
Solar energy
Polymer layers
Composite material
Service conditions
Paper laminates
Practical engineering
Thermoelasticity
Digital image correlations
Electric connectors
Mathematical models
Mathematical model
Thermomechanical deformations
business.industry
Applied Mathematics
Mechanical Engineering
Nanostructured materials
Photovoltaic system
Thermal expansion coefficients
Approximate model
Mechanics of Materials
Modeling and Simulation
Elastic deformation
Photovoltaic effects
Electric connections
Temperature dependent
Multi-layered systems
ddc:620
business
Zdroj: Journal of Strain Analysis for Engineering Design 46 (2011), Nr. 8
Popis: Recent experimental results based on the digital image correlation technique (U. Eitner, M. Köntges, R. Brendel, Solar Energy Mater. Solar Cells, 2010, 94, 1346-1351) show that the gap between solar cells embedded into a standard photovoltaic laminate varies with temperature. The variation of this gap is an important quantity to assess the integrity of the electric connection between solar cells when exposed to service conditions. In this paper, the thermo-elastic deformations in photovoltaic laminates are analytically investigated by developing different approximate models based on the multilayered beam theory. It is found that the temperature-dependent thermo-elastic properties of the encapsulating polymer layer are responsible for the deviation from linearity experimentally observed in the diagram relating the gap variation to the temperature. The contribution of the different material constituents to the homogenized elastic modulus and thermal expansion coefficient of the composite system is also properly quantified through the definition of weight factors of practical engineering use. Copyright © 2011 by Institution of Mechanical Engineers.
Databáze: OpenAIRE
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