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Abstract Papaefthimiou S, Leftheriotis G, Yianoulis P:
"Potential energy saving in buildings by integratin electrochromic windows",
In RenewEnergy2006: (Mar 2006)


Keywords    
Abstract   In this study, the development of electrochromic (EC) glazing is described. EC devices combine optimum dynamic control of the solar radiation penetrating into buildings with a high degree of thermal insulation. The optimisation of the EC devices included the deposition of the materials (electrochromic oxide WO3, ion storage layer CeO2 or V2O5), the selection of suitable transparent conductors (K-GlassTM) and the fabrication of polymer electrolytes based on lithium salts. Electrochromic glazing prototypes with dimensions up to 40 cm ? 40 cm have been fabricated using vacuum techniques and chemical methods. The prototypes exhibit excellent optical and thermal performance, with a contrast ratio up to 1:32 (visible dynamic transmittance range Tlum, bleached=63% and Tlum, colored=2%) and coloration efficiency up to 92 cm2/C. Their durability in relation to real working environmental conditions has been assessed through indoor and outdoor testing. Such a glazing can be used in building applications to improve occupant thermal comfort, contribute to a reduction in space heating and cooling loads and allow for increased areas of fenestration thereby reducing artificial lighting loads. These factors reduce the energy demand for the building and therefore contribute to the reduction of carbon dioxide emissions.
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Authors:

 3 records found.
Name Affiliation Home page e-mail Total pubs 
Leftheriotis GLaboratory of Energy and Environment, Physics Department, University of Patras, Rio 265 00, Greece  1
Papaefthimiou SLaboratory of Energy and Environment, Physics Department, University of Patras, Rio 265 00, Greece spapaef@physics.upatras.gr3
Yianoulis PLaboratory of Energy and Environment, Laboratory of Energy and Environment, Physics Department, University of Patras, Rio 265 00, Greece yianpan@physics.upatras.gr5

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References included in article:

 16 records found.
Order of appearence Full citation SRCosmos Link 
1Granqvist CG,
(1995). Handbook of inorganic electrochromic materials, Amsterdam, Elsevier.
 
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3www.pilkington.com 
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5www.sage-ec.com 
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8www.saint-gobain.com 
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(1999). Solar Energy Materials and Solar Cells 56 237-248.
 
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(1999). Solar Energy Materials and Solar Cells 56 321-341.
 
12Papaefthimiou S, Leftheriotis G, Yianoulis P,
(2001). "Advanced electrochromic devices based on WO3 thin films", Electrochimica Acta 46 (13-14), 2145-2150.
 
13Papaefthimiou S, Leftheriotis G, Yianoulis P,
(1999). "Study of electrochromic cells incorporating WO3, MoO3, WO3-MoO3 and V2O5 coatings", Thin Solid Films 343-344, 183-186.
 
14Leftheriotis G, Papaefthimiou S, Yianoulis P,
(2000). "Integrated low-emittance-electrochromic devices incorporating ZnS/Ag/ZnS coatings as transparent conductors", Solar Energy Materials & Solar Cells 61, 107-112.
 
15Leftheriotis G, Papaefthimiou S, Yianoulis P,
(2000). "Development of multilayer transparent conductive coatings", Solid State Ionics 136-137, 655-661.
 
16Syrrakou E, Papaefthimiou S, Yianoulis P,
(2005). "Environmental assessment of electrochromic glazing production", Solar Energy Materials and Solar Cells 85 205.