Applications of coated glass in high performance energy efficient windows

Arne Roos, Andreas Jonsson, Annica Nilsson, The Angstrom Laboratory, Uppsala University

This paper gives an overview of available coatings on glass, which can be used not only to improve the energy performance of a window, but also to overcome some of the negative effects caused by a more advanced window design. Improved light transmittance can thus be achieved by the introduction of antireflection coatings and restore high light transmittance also for windows with the lowest possible U-values. Electrochromic coatings, also possibly combined with antireflection coatings, can optimize the window for both summer and winter conditions. The effects of external water condensation can be eliminated, or at least be reduced, by a coating on the outer surface of the window. Some successful results from tests of an external coating to reduce the effects of external water condensation are presented. Examples of energy balance calculations for electrochromic windows are also presented together with the potential improvement in light transmittance for triple glazed windows with antireflection coatings.

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The Authors

Arne Roos Uppsala University Arne Roos is a professor in Solid State Physics at the Angstrom Laboratory, Uppsala University in Sweden. He is currently a member of the organising committee of the International Conference on Coatin... Read more