Building Simulation

, Volume 2, Issue 2, pp 75–84 | Cite as

Theoretical modelling and experimental evaluation of the optical properties of glazing systems with selective films

  • Francesco Asdrubali
  • Giorgio Baldinelli
Research Article/Building Thermal, Lighting, and Acoustics Modeling


Transparent spectrally selective coatings and films on glass or polymeric substrates have become quite common in energy-efficient buildings, though their experimental and theoretical characterization is still not complete. A simplified theoretical model was implemented to predict the optical properties of multilayered glazing systems, including coating films, starting from the properties of the single components. The results of the simulations were compared with the predictions of a commercial simulation code which uses a ray tracing technique. Both models were validated thanks to several measurements carried out with a spectrophotometer on single and double sheet glazings with different films. Results show that both ray tracing simulations and the theoretical model provide good estimations of optical properties of glazings with applied films, especially in terms of spectral transmittance.


glazing selective films optical properties spectrophotometry ray tracing simulations 


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  1. Alvarez G, Flores JJ, Aguilar JO, Gómez-Daza O, Estrada CA, Nair MTS, Nair PK (2005). Spectrally selective laminated glazing consisting of solar control and heat mirror coated glass: Preparation, characterization and modelling of heat transfer. Solar Energy, 78: 705–712.CrossRefGoogle Scholar
  2. Asdrubali F, Bonaut M, Battisti M, Venegas M (2008). Comparative study of energy regulations for buildings in Italy and Spain. Energy and buildings, 40: 1805–1825.CrossRefGoogle Scholar
  3. Asdrubali F, Bisegna F (2004). Experimental glass optical data to build up new multisheet glazing systems to improve energy savings and indoor comfort. In: Proceedings of 7th Pan American Lighting Congress (LuxAmerica 2004). Lima, Perù.Google Scholar
  4. Bakker LG, Visser H (2007). Impact of solar control glazing on energy and CO2 savings in Europe. Delft: TNO report 2007-D-R0576/B.Google Scholar
  5. CEI UNI ENV 13005 (2005). Guida all’espressione dell’incertezza di misura. (in Italian)Google Scholar
  6. Chow TT, Fong KF, He W, Lin Z, Chan ALS (2007). Performance evaluation of a PV ventilated window applying to office building of Hong Kong. Energy and Buildings, 39: 643–650.CrossRefGoogle Scholar
  7. Durrani SMA, Khawaja EE, Al-Shukri AM, Al-Kuhaili MF (2004). Dielectric/Ag/dielectric coated energy-efficient glass windows for warm climates. Energy and Buildings, 36: 891–898.CrossRefGoogle Scholar
  8. EEA Annual report 2007 and Environmental statement 2008 (2008). Available via Accessed 9 Oct. 2008.Google Scholar
  9. EU Directive (2002). Directive 2002/91/EC of the European Parliament and of the Council of 16 December 2002 on the Energy Performance of Buildings.Google Scholar
  10. Gugliermetti F, Bisegna F (2003). Visual and energy management of electrochromic windows in mediterranean climate. Building and Environment, 38: 479–492.CrossRefGoogle Scholar
  11. Hamza N, Greenwood D (2009). Energy conservation regulations: impacts on design and procurement of low energy buildings. Building and environment, 44: 929–936.CrossRefGoogle Scholar
  12. Hutchins MG, Platezer WJ (1996). The thermal performance of advanced glazing materials. In: Proceedings of IV World Renewable Energy Congress (WREC), Denver, USA, pp. 540–545.Google Scholar
  13. ISO 9050 (2003). Glass in building-Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors.Google Scholar
  14. Italian Legislative Decree n° 311 (2006). Disposizioni correttive ed integrative al decreto legislativo 19 agosto 2005, n. 192, recante attuazione della direttiva 2002/91/CE, relativa al rendimento energetico nell’edilizia. (in Italian)Google Scholar
  15. Kaushika ND, Sumathy K (2003). Solar transparent insulation materials: A review. Renewable and Sustainable Energy Reviews, 7: 317–351.CrossRefGoogle Scholar
  16. Kuhn TE, Bühler C, Platzer J (2000). Evaluation of overheating protection with sun-shading systems. Solar Energy, 69(suppl. 6): 59–74.Google Scholar
  17. Lambda Research Corporation (2008). TracePro Suite of Optical and Illumination Design Software. Available via Accessed 9 Oct. 2008.
  18. Laouadi A, Parekh A (2007)a. Optical models of complex fenestration systems. Lighting Research and Technology, 39: 123–145.CrossRefGoogle Scholar
  19. Laouadi A, Parekh A (2007)b. Complex fenestration systems: towards product ratings for indoor environmental quality. Lighting Research and Technology, 39: 109–122.CrossRefGoogle Scholar
  20. Leftheriotis G, Papaefthimiou S, Yanoulis P (2000). Development of multilayer transparent conductive coatings. Solid State Ionics, 136 - 137: 655–661.CrossRefGoogle Scholar
  21. Li DHW, Lam TNT, Wong SL, Tsang EKW (2008). Lighting and cooling energy consumption in an open-plan office using solar film coating. Energy, 33: 1288–1297.CrossRefGoogle Scholar
  22. Maamari F, Andersen M, de Boer J, Carroll WL, Dumortier D, Greenup P (2006). Experimental validation of simulation methods for bi-directional transmission properties at the daylighting performance level. Energy and Buildings, 38: 878–889.CrossRefGoogle Scholar
  23. Maestre IR, Molina JL, Roos A, Coronel JF (2007). A single thin film model for the angle dependent optical properties of coated glazings. Solar Energy, 81: 969–976.CrossRefGoogle Scholar
  24. Nostell P (2000). Preparation and optical characterisation of antireflection coatings and reflector materials for solar energy systems. Dissertation for the Degree Doctor of Philosophy, Acta Universitatis Upsaliensis, Uppsala, Sweden.Google Scholar
  25. Perez-Lombard L, Ortiz J, Gonzalez R, Maestre IR (2009). A review of benchmarking, rating and labelling concepts within the framework of building energy certification schemes. Energy and Buildings, 41: 272–278.CrossRefGoogle Scholar
  26. Roos A, Polato P, van Nijnatten PA, Hutchins MG, Olive F, Anderson C (2000). Angular dependent optical properties of low-e and solar control windows-Simulation versus measurements. Solar Energy, 69(suppl. 6): 15–26Google Scholar
  27. Rubin M, Von Rottkay K, Powles R (1998). Window optics. Solar Energy, 62 (3): 149–161.CrossRefGoogle Scholar
  28. Seeboth A, Schneider J, Patzak A (2000). Materials for intelligent sun protecting glazing. Solar Energy Materials and Solar Cells, 60: 263–277.CrossRefGoogle Scholar
  29. Sellmeier W (1871). Zur Erklärung der abnormen Farbenfolge in Spectrum einiger Substanzen. Annals of Physical Chemistry, 143: 272–282. (in German)CrossRefGoogle Scholar
  30. UNI 7885 (1978). Prove sul vetro. Determinazione dei fattori di trasmissione dell’energia solare. (in Italian)Google Scholar
  31. UNI EN ISO 13790 (2008). Energy performance of buildings-Calculation of energy use for space heating and cooling.Google Scholar

Copyright information

© Tsinghua University Press and Springer-Verlag GmbH 2009

Authors and Affiliations

  1. 1.Department of Industrial EngineeringUniversity of PerugiaPerugiaItaly

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