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Crystalline Silicon Photovoltaic Technologies
Published in Anco S. Blazev, Photovoltaics for Commercial and Utilities Power Generation, 2020
Most c-Si modules have a thin sheet of aluminum for back cover, which is screwed into the frame, with the terminal box attached to it. A key characteristic of the back cover is that it must have low thermal resistance and that it must prevent the ingress of water or water vapor. In most modules, a thin polymer sheet, typically Tedlar, is used as the rear surface, which provides electrical and environmental protection for the solar cells. Some PV modules, known as bifacial modules, are designed to accept light from either the front or the rear of the solar cell. In bifacial modules both the front and the rear must be optically transparent, so glass is the preferred material for these.
Industrial Polymers
Published in Manas Chanda, Plastics Technology Handbook, 2017
PVF is tough and flexible, has good abrasion and staining resistance, and has outstanding weathering resistance. It maintains useful properties over a temperature range of −70°C to 110°C. PVF can be laminated to plywood, hardboard, vinyl, reinforced polyesters, metal foils, and galvanized steel. These laminates are used in aircraft interior panels, lighting panels, wall coverings, and a variety of building applications. PVF is also used as glazing in solar energy collectors. PVF film is marketed by DuPont as Tedlar.
Modelling and simulation of a photovoltaic module using finite element method: transient analysis
Published in International Journal of Ambient Energy, 2023
Naima Boulfaf, El Hassan Ait Laasri, Naima Hamid, Mustapha Elyaqouti, Abdelaaziz Ghafiri, Jamal Chaoufi
The two-dimensional model that simulates thermal transfer in the polycrystalline silicon PV module consists of three layers (Figure 1): Layer of glass, which is the front face of the PV module exposed to incident solar radiation. This layer has a protective role for PV modules (protection against external factors such as wind, frost, rain, snow, corrosion, and accidental impact). It allows an excellent transmission of sunlight to produce electrical energy.Layer containing polycrystalline silicon PV cells that convert absorbed solar radiation into electrical energy.Layer of Tedlar (fluoropolymer) on the back of the PV module, which protects it against bad weather, insolubility, and erosion.
A Multiwire Proportional Chamber for Standardization of Large-Area Sources: Methodology and Challenges for Inhouse Construction
Published in Nuclear Technology, 2023
Ross Longmore, Alessia Ceccatelli, Stuart Green, Tinashe Kanyasa, John Nally, Marta Tempra
The gas circuit specifically assembled for the MWPC consists of the following components: British Oxygen CompanyTM (BOC) argon/methane (P-10) gas cylinderBOC cylinder regulator C106x/2BBOC precision flowmeter ref no: 846023Saint-Gobain Chemware™ Tedlar™ polyvinylidene fluoride (PVF) gas sampling bagsBOC Edwards E2M 1.5 vacuum pump3× gas valves with 1/4-in. British Standard Pipe (BSP) male to 1/4-in. compression fittings 1/4-in. outside diameter nylon hose for interconnectionscompound pressure gauge (BOC part number 842338, vac-4.1 stainless steel 1/4-in. National Pipe Thread male).
The feasibility of new design of hybrid photovoltaic-thermal system – a theoretical approach
Published in International Journal of Ambient Energy, 2018
H. Ben Cheikh El Hocine, A. Gama, K. Touafek
The encapsulation of the PV laminate was composed of different layers based on the PV technology used, which are: the glass/EVA/c-Si/EVA/Tedlar. These layers are encased in a metal frame. Glass covering: made of tempered glass, through a process of rapid heating and cooling to improve its strength. This is ultra-clear, with a high transmittance rate and low iron content to extract more solar energy.PV cells: with silicon wafers. A wafer thickness of 0.35 mm is used in this PV cell.EVA Layer: the PV cells are encapsulated in a layer of EVA for securing the PV cells to the cover glass and the back encapsulating material and for supplying a humidity resistance and electrical insulation.Rear metal contact: full metal contact is formed on the rear face of the solar cell by screen printing a metal paste made of aluminium, on the rear surface.Tedlar polymer layer: consists of polyvinyl fluoride (PVF). This layer is photostable and ensures additional insulation and humidity protection for the PV layers.