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Westfield Hamburg-Ãœberseequartier

HafenCity Hamburg, Germany

With its 14 hectares of urban space, the Westfield Hamburg-Überseequartier project has become the new commercial heart of HafenCity in Hamburg and a landmark project for Germany. The waterfront development provides a vibrant and eclectic metropolitan quarter while remaining in easy reach of the rest of the city’s attractions.

º£½ÇÊÓƵ was commissioned to provide MEP building services design for the mixed-use project, which includes more than 200 retail and gastronomy units, multi-screen cinemas, office buildings, hotels, bus and taxi terminals and three levels of basement parking. The development also includes a cruise terminal and the integration of the U-Bahn metro station.

Despite being independently designed, the buildings share common MEP systems.

All buildings have been designed to meet BREEAM Excellent.

Thirteen architecturally outstanding buildings house 80,500m² of space dedicated to retail and 21,000m² for gastronomy and entertainment.

Challenge

A number of architectural and engineering practices were commissioned for this multifaceted project, which meant communication across the whole project team was integral to its success. With all building owners sharing access to the MEP services provision, we needed to work with each building team to carefully plan services installation within the individual units.

The º£½ÇÊÓƵ team were based in the project co-location with all other project participants. This was crucial to enable fast decision making and effective communication. Thanks to our extensive BIM knowledge and experience, we undertook the overarching coordination role. This entailed compiling the IFC models of all other designers and leading the 3D coordination meetings.

º£½ÇÊÓƵ carefully planned the site services distributions systems within the basement parking, including heating, cooling, water services, fresh air systems and heat recovery systems to enable an integrated design solution to be provided.

Solution

The centralised cooling energy centre has been designed to meet the various load profiles from the retail areas, cinema, hotel and office buildings to achieve an energy efficient and optimised design solution. The central cooling provision with nine chillers provides 12 MW of cooling to the various buildings within the development. The system was designed to allow for varying load demands and maintain consistent performance during difference operational scenarios.

The retail areas, offices, cinema and transport terminals are all connected to the same ring main supply in the basement to enable the energy profiles of the mixed use schemes to be harmonised.

Heat recovery techniques were used to recover the water heat and enhance the energy performance. Fresh air systems, kitchen extract and smoke extract were optimised to minimise space requirements and maximise performance. We designed the ventilation systems to fulfil the local regulations and coordinated the commissioning process and inspections.