The "Bau und Liegenschaftsbetrieb" is a public owned company that is responsible for the facility management of all buildings belonging to the state of North Rhine-Westphalia.
Ministry of Economic Affairs and Energy of the State of North Rhine-Westphalia.
The building´s main use is for administrative purposes with offices, conference rooms and a canteen. Most offices are naturally ventilated while most of the conference rooms and the cantine are air-conditioned. Other special uses include a library, a server room, an archive in the basement and a print shop.
The building consists of two parts: A tower block with 18 floors and an adjacent L-shaped building with 7 floors. Both parts have classic facades and a basement. Approximately 70% of the whole building is used as office space(mostly single room offices). Archives and the technical installations for heating and cooling are situated in the besement. Most of the air handling units are installed on the uppermost floors of the building.
The majority of the building is heated by radiators which are supplied by district heating. A central compression chiller supplies most of the air handling units which provides cooling for the special use areas like conference rooms and the canteen. Additional compact water chillers and split systems supply further areas like the server room. The building has more than 10 air handling units for the different special use areas.
|Owner||Bau- und Liegenschaftsbetrieb NRW|
|Year of erection||1953-1961|
|Net floor area||30.000 m²|
|Consumption of electricity||1.300.000 kWh/a (2006)|
|Consumption of heating||2.400.000 kWh/a (2006)|
|HVAC equipment||heating, cooling, ventilation, air conditioning,|
|building automation system|
|Energy source||district heating|