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References from ABB ABB i-bus® KNX setting concrete efficiency benchmarks

Bezau Secondary School in Vorarlberg, Austria: Reduction of the energy consumption from 160 to 25 kWh Via ABB i-bus® KNX the lighting of the school is controlled using presence detection, external brightness and timer programs.

School Centre in Neckargemünd, Baden, Germany: Only a third of the previous energy consumption levels Following a fire in 2003, the school centre was rebuilt to passive house standard.

The heating saves energy through individual room temperature control utilising a central timer and visualisation system.

The new building is about 14,000 square metres extending over three floors. It incorporates 206 rooms, 42 of which are class rooms, 51 are used as specialist rooms.

The blind control has been praised by teaching staff and students alike, because it prevents unnecessary heating-up of the rooms using automatic shading and provides a tangible level of comfort.

All room states are visualised at a central point via KNX.

Through utilising ABB i-bus® KNX and modernising the building shell, the energy consumption of the school is now just over 25 kWh per square metre annually – 84 % less than before!

The KNX installation consists of 14 lines with a total of 525 KNX components.

The individual applications are:

  • Timer control of the lighting

  • Presence detection in the toilets

  • Blind control with automatic heating / cooling function (When a room is not in use, the blinds remain open in winter and closed in summer)

The use of construction measures and the introduction of an intelligent building control has reduced the energy consumption in the new building to about a third of the “old” consumption figure.

20 2CDC 500 060 M0201

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