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Optical characterisation and energy simulations on switchable mirrors

Panel: 6. Innovations in buildings and appliances

This is a peer-reviewed paper.

Authors:
Andreas Jonsson, Department of Engineering Sciences, Uppsala University, Sweden
Arne Roos, Solid State Physics, Uppsala University, Uppsala, Sweden, Sweden
Yamada Yasusei, National Institute of Advanced Industrial Science and Technology, Nagoya, Japan, Japan

Abstract

In a research collaboration between the National Institute of Advanced Industrial Science and Technology (AIST) in Japan and Uppsala University in Sweden, switchable mirrors have been optically characterized and evaluated from an energy perspective using energy simulations. The switchable mirrors are based on gasochromic metal hydrides and are switched between a transparent and a reflective state by the insertion of an oxygen gas mixture or a hydrogen gas mixture respectively in between the panes. The energy simulations and optical measurements show that there is a great potential for switchable windows based on metal hydrides. The windows might in some cases decrease the energy demand of the building rather than being one of the weakest parts of the energy system of a building.

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