| Abstract: | A demonstration project at an office building of Nederlandse Gasunie in Groningen, Holland, is here described by engineers with TNO-TH in Delft. Five different lighting systems were installed on different floors, most of them controlled automatically on daylight in an inner and outer zone. These systems, when compared with a reference system without automatic control, showed savings between 30 and 40 per cent of lighting energy consumption in relation to the maximum number of lighting hours. |
