In December 2000, a new demonstration building for lighting research "Valotalo" (Light House) wasinaugurated at Helsinki University of Technology. The newest experimental technologies for integration of artificial and daylight were applied in order to validate their efficiency and peoples acceptance. Photovoltaic panels of 7 kW maximum power were integrated in the south faade. A 30 m2 solar heating system mounted on the roof of "Light House" produces warm service water. A daylighting test room is also built on the roof for further daylight research.
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