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Sustainable Building Case Studies

  1. Bremen State and University Library
  2. Radical refurbishment of the office towers of the KfW Bankengruppe (banking group)
  3. Printing company in Karlsruhe
  4. Office buildings of the Civil Engineering Office in Nuremberg
  5. Käthe-Kollwitz School, Aachen
  6. Renovation and reconstruction of a childcare facility in Wismar
  7. Renovation of a listed "Art Nouveau" building in Nuremberg
  8. "Neue Burse" student hall of residence, Wuppertal

Radical refurbishment of the office towers of the KfW Bankengruppe (banking group)

windows
© RKW Architektur + Städtebau Fotograf: Carsten Costhard

Measures

  • Curtain wall systems
  • Daylight systems
  • Optimised lighting
  • Ventilation and heat recovery
  • Combined heat and power generation
  • Combined heat and cooling
  • Control technology
  • Control and optimisation of operations
  • Building automation
  • Curtain wall systems
  • Daylight planning and systems

Energy Savings

A CHP system has been providing the building's heating since the mid-1990s. Since the renovation, the waste heat from this system is now used by absorption cooling machines to generate cooled air. This innovation has played a major role in reducing the building's primary energy requirement, which was almost halved. It is now down from 331.1 kWh/m2a to 174.6 kWh/m2a.