Dynamic Solar Radiation Control in Buildings by Applying Electrochromic Materials
Authors: Publication Year: 2010

Smart windows like electrochromic windows (ECWs) are windows which are able to regulate the solar radiation throughput by application of an external voltage. The ECWs may decrease heating, cooling and electricity loads in buildings by admitting the optimum level of solar energy and daylight into the buildings at any given time, e.g. cold winter climate versus warm summer climate demands. In order to achieve as dynamic and flexible solar radiation control as possible, the ECWs may be characterized by a number of solar radiation glazing factors, i.e. ultraviolet solar transmittance, visible solar transmittance, solar transmittance, solar material protection factor, solar skin protection factor, external visible solar reflectance, internal visible solar reflectance, solar reflectance, solar absorbance, emissivity, solar factor and colour rendering factor. Comparison of these solar quantities for various electrochromic material and window combinations and configurations enables one to select the most appropriate electrochromic materials and ECWs for specific buildings. Measurements and calculations were carried out on two different electrochromic window devices, where one ECW was substantially darker than the other in the coloured state.

Additional Info

  • WP: Advanced materials technologies
  • Publication Year: 2010
  • Number: 133-144
  • Name of proceedings: Proceedings of Renewable Energy Research conference 2010
  • Name of conference: Renewable Energy Research Conference
  • Town: Trondheim
  • Country: Norway
  • Date from: Monday, 07 June 2010
  • Date to: Tuesday, 08 June 2010
  • Publisher: Tapir Akademisk Forlag

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